fix: 修正 logo 中 N 和 G 字母造型

N 添加对角线笔画（█▄ █），G 添加内横杠（█ ▀█），
避免与 O 字母造型雷同。同步更新 ui.ts 中的硬编码 wordmark。

packages/core/test/plugin/command.test.ts

@@ -0,0 +1,44 @@
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { CommandV2 } from "@opencode-ai/core/command"
+import { Location } from "@opencode-ai/core/location"
+import { CommandPlugin } from "@opencode-ai/core/plugin/command"
+import { AbsolutePath } from "@opencode-ai/core/schema"
+import { location } from "../fixture/location"
+import { testEffect } from "../lib/effect"
+
+const directory = AbsolutePath.make("/repo/packages/app")
+const project = AbsolutePath.make("/repo")
+const it = testEffect(
+  CommandV2.locationLayer.pipe(
+    Layer.provide(
+      Layer.succeed(Location.Service, Location.Service.of(location({ directory }, { projectDirectory: project }))),
+    ),
+  ),
+)
+
+describe("CommandPlugin.Plugin", () => {
+  it.effect("registers built-in init and review commands", () =>
+    Effect.gen(function* () {
+      const command = yield* CommandV2.Service
+      yield* CommandPlugin.Plugin.effect.pipe(
+        Effect.provideService(CommandV2.Service, command),
+        Effect.provideService(
+          Location.Service,
+          Location.Service.of(location({ directory }, { projectDirectory: project })),
+        ),
+      )
+
+      expect(yield* command.get("init")).toMatchObject({
+        name: "init",
+        description: "guided AGENTS.md setup",
+      })
+      expect((yield* command.get("init"))?.template).toContain("`/repo`")
+      expect(yield* command.get("review")).toMatchObject({
+        name: "review",
+        description: "review changes [commit|branch|pr], defaults to uncommitted",
+        subtask: true,
+      })
+    }),
+  )
+})

packages/core/test/plugin/fixtures/models-dev.json

@@ -0,0 +1,14 @@
+{
+  "acme": {
+    "id": "acme",
+    "name": "Acme",
+    "env": ["ACME_API_KEY"],
+    "models": {}
+  },
+  "local": {
+    "id": "local",
+    "name": "Local",
+    "env": [],
+    "models": {}
+  }
+}

packages/core/test/plugin/fixtures/provider-factory.ts

@@ -0,0 +1,9 @@
+export function createFixtureProvider(options: Record<string, unknown>) {
+  const captured = Object.fromEntries(Object.entries(options))
+  return Object.assign((modelID: string) => ({ modelID, options: captured }), {
+    options: captured,
+    languageModel(modelID: string) {
+      return { modelID, options: captured }
+    },
+  })
+}

packages/core/test/plugin/models-dev.test.ts

@@ -0,0 +1,65 @@
+import path from "path"
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { Connector } from "@opencode-ai/core/connector"
+import { Credential } from "@opencode-ai/core/credential"
+import { Database } from "@opencode-ai/core/database/database"
+import { EventV2 } from "@opencode-ai/core/event"
+import { Flag } from "@opencode-ai/core/flag/flag"
+import { Location } from "@opencode-ai/core/location"
+import { ModelsDev } from "@opencode-ai/core/models-dev"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { ModelsDevPlugin } from "@opencode-ai/core/plugin/models-dev"
+import { Policy } from "@opencode-ai/core/policy"
+import { AbsolutePath } from "@opencode-ai/core/schema"
+import { location } from "../fixture/location"
+import { testEffect } from "../lib/effect"
+
+const events = EventV2.defaultLayer
+const locationLayer = Layer.succeed(
+  Location.Service,
+  Location.Service.of(location({ directory: AbsolutePath.make(import.meta.dir) })),
+)
+const plugins = PluginV2.layer.pipe(Layer.provide(events))
+const policy = Policy.layer.pipe(Layer.provide(locationLayer))
+const credentials = Credential.layer.pipe(Layer.provide(Database.layerFromPath(":memory:")), Layer.provide(events))
+const catalog = Catalog.layer.pipe(Layer.provide(Layer.mergeAll(events, locationLayer, plugins, policy, credentials)))
+const connectors = Connector.locationLayer.pipe(Layer.provide(credentials), Layer.provide(events))
+const layer = Layer.mergeAll(catalog, connectors, credentials, events, locationLayer, plugins)
+const it = testEffect(layer)
+
+describe("ModelsDevPlugin", () => {
+  it.effect("registers key connectors for providers with environment variables", () =>
+    Effect.acquireUseRelease(
+      Effect.sync(() => {
+        const previous = {
+          path: Flag.OPENCODE_MODELS_PATH,
+          disabled: Flag.OPENCODE_DISABLE_MODELS_FETCH,
+        }
+        Flag.OPENCODE_MODELS_PATH = path.join(import.meta.dir, "fixtures", "models-dev.json")
+        Flag.OPENCODE_DISABLE_MODELS_FETCH = true
+        return previous
+      }),
+      () =>
+        Effect.gen(function* () {
+          yield* ModelsDevPlugin.effect
+          const connectors = yield* Connector.Service
+          expect(yield* connectors.list()).toEqual([
+            new Connector.Info({
+              id: Connector.ID.make("acme"),
+              name: "Acme",
+              methods: [
+                new Connector.KeyMethod({ id: Connector.MethodID.make("api-key"), type: "key", label: "API Key" }),
+              ],
+            }),
+          ])
+        }).pipe(Effect.provide(ModelsDev.defaultLayer)),
+      (previous) =>
+        Effect.sync(() => {
+          Flag.OPENCODE_MODELS_PATH = previous.path
+          Flag.OPENCODE_DISABLE_MODELS_FETCH = previous.disabled
+        }),
+    ),
+  )
+})

packages/core/test/plugin/provider-alibaba.test.ts

@@ -0,0 +1,67 @@
+import { describe, expect } from "bun:test"
+import { createAlibaba } from "@ai-sdk/alibaba"
+import { Effect } from "effect"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { AlibabaPlugin } from "@opencode-ai/core/plugin/provider/alibaba"
+import { it, model } from "./provider-helper"
+
+describe("AlibabaPlugin", () => {
+  it.effect("creates an Alibaba SDK for @ai-sdk/alibaba", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(AlibabaPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("alibaba", "qwen"), package: "@ai-sdk/alibaba", options: { name: "alibaba" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("ignores non-Alibaba SDK packages", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(AlibabaPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("alibaba", "qwen"), package: "@ai-sdk/openai-compatible", options: { name: "alibaba" } },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("matches the old bundled Alibaba SDK provider naming", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(AlibabaPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-alibaba", "qwen"),
+          package: "@ai-sdk/alibaba",
+          options: { name: "custom-alibaba", apiKey: "test" },
+        },
+        {},
+      )
+      const expected = createAlibaba({ apiKey: "test", ...{ name: "custom-alibaba" } }).languageModel("qwen")
+      const actual = result.sdk?.languageModel("qwen")
+      expect(actual?.provider).toBe(expected.provider)
+      expect(actual?.modelId).toBe(expected.modelId)
+    }),
+  )
+
+  it.effect("uses the old default languageModel(api.id) behavior", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(AlibabaPlugin)
+      const item = model("alibaba", "alias", { api: { id: ModelV2.ID.make("qwen-plus") } })
+      const result = yield* plugin.trigger("aisdk.sdk", { model: item, package: "@ai-sdk/alibaba", options: {} }, {})
+      const language = result.sdk?.languageModel(item.api.id)
+      expect(language?.modelId).toBe("qwen-plus")
+      expect(language?.provider).toBe("alibaba.chat")
+    }),
+  )
+})

packages/core/test/plugin/provider-amazon-bedrock.test.ts

@@ -0,0 +1,555 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { AmazonBedrockPlugin } from "@opencode-ai/core/plugin/provider/amazon-bedrock"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { fakeSelectorSdk, it, model, provider, withEnv } from "./provider-helper"
+
+function bedrockBaseURL(sdk: unknown, modelID = "anthropic.claude-sonnet-4-5") {
+  const language = (sdk as { languageModel: (id: string) => unknown }).languageModel(modelID)
+  return (language as { config: { baseUrl: () => string } }).config.baseUrl()
+}
+
+function bedrockFetch(sdk: unknown, modelID = "anthropic.claude-sonnet-4-5") {
+  const language = (sdk as { languageModel: (id: string) => unknown }).languageModel(modelID)
+  return (
+    language as { config: { fetch: (input: Parameters<typeof fetch>[0], init?: RequestInit) => Promise<Response> } }
+  ).config.fetch
+}
+
+function openAIUrl(language: unknown, path: string, modelId: string) {
+  return (language as { config: { url: (input: { path: string; modelId: string }) => string } }).config.url({
+    path,
+    modelId,
+  })
+}
+
+describe("AmazonBedrockPlugin", () => {
+  it.effect("moves endpoint option to api URL", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(AmazonBedrockPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const bedrock = provider("amazon-bedrock", {
+          api: { type: "aisdk", package: "@ai-sdk/amazon-bedrock" },
+          request: {
+            headers: {},
+            body: { endpoint: "https://bedrock.example" },
+          },
+        })
+        catalog.provider.update(bedrock.id, (item) => {
+          item.api = bedrock.api
+          item.request = bedrock.request
+        })
+      })
+      const result = yield* catalog.provider.get(ProviderV2.ID.amazonBedrock)
+      expect(result.api).toEqual({
+        type: "aisdk",
+        package: "@ai-sdk/amazon-bedrock",
+        url: "https://bedrock.example",
+      })
+      expect(result.request.body.endpoint).toBeUndefined()
+    }),
+  )
+
+  it.effect("prefers endpoint over baseURL for SDK base URL", () =>
+    withEnv({ AWS_BEARER_TOKEN_BEDROCK: undefined, AWS_PROFILE: undefined, AWS_ACCESS_KEY_ID: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(AmazonBedrockPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+            package: "@ai-sdk/amazon-bedrock",
+            options: {
+              name: "amazon-bedrock",
+              bearerToken: "token",
+              baseURL: "https://base.example",
+              endpoint: "https://endpoint.example",
+              region: "us-east-1",
+            },
+          },
+          {},
+        )
+        expect(bedrockBaseURL(result.sdk)).toBe("https://endpoint.example")
+      }),
+    ),
+  )
+
+  it.effect("uses baseURL as SDK base URL", () =>
+    withEnv({ AWS_BEARER_TOKEN_BEDROCK: undefined, AWS_PROFILE: undefined, AWS_ACCESS_KEY_ID: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(AmazonBedrockPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+            package: "@ai-sdk/amazon-bedrock",
+            options: {
+              name: "amazon-bedrock",
+              bearerToken: "token",
+              baseURL: "https://base.example",
+              region: "us-east-1",
+            },
+          },
+          {},
+        )
+        expect(bedrockBaseURL(result.sdk)).toBe("https://base.example")
+      }),
+    ),
+  )
+
+  it.effect("creates SDK without explicit credential env so the default AWS chain can resolve credentials", () =>
+    withEnv(
+      {
+        AWS_ACCESS_KEY_ID: undefined,
+        AWS_BEARER_TOKEN_BEDROCK: undefined,
+        AWS_CONTAINER_CREDENTIALS_FULL_URI: undefined,
+        AWS_CONTAINER_CREDENTIALS_RELATIVE_URI: undefined,
+        AWS_PROFILE: undefined,
+        AWS_REGION: undefined,
+        AWS_WEB_IDENTITY_TOKEN_FILE: undefined,
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(AmazonBedrockPlugin)
+          const result = yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+              package: "@ai-sdk/amazon-bedrock",
+              options: { name: "amazon-bedrock" },
+            },
+            {},
+          )
+          expect(result.sdk).toBeDefined()
+          expect(bedrockBaseURL(result.sdk)).toBe("https://bedrock-runtime.us-east-1.amazonaws.com")
+        }),
+    ),
+  )
+
+  it.effect("uses config region over AWS_REGION for SDK base URL", () =>
+    withEnv({ AWS_BEARER_TOKEN_BEDROCK: "token", AWS_REGION: "us-east-1" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(AmazonBedrockPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+            package: "@ai-sdk/amazon-bedrock",
+            options: { name: "amazon-bedrock", region: "eu-west-1" },
+          },
+          {},
+        )
+        expect(bedrockBaseURL(result.sdk)).toBe("https://bedrock-runtime.eu-west-1.amazonaws.com")
+      }),
+    ),
+  )
+
+  it.effect("uses AWS_REGION for SDK base URL when config region is absent", () =>
+    withEnv({ AWS_BEARER_TOKEN_BEDROCK: "token", AWS_REGION: "eu-west-1" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(AmazonBedrockPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+            package: "@ai-sdk/amazon-bedrock",
+            options: { name: "amazon-bedrock" },
+          },
+          {},
+        )
+        expect(bedrockBaseURL(result.sdk)).toBe("https://bedrock-runtime.eu-west-1.amazonaws.com")
+      }),
+    ),
+  )
+
+  it.effect("defaults SDK region to us-east-1", () =>
+    withEnv({ AWS_BEARER_TOKEN_BEDROCK: "token", AWS_REGION: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(AmazonBedrockPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+            package: "@ai-sdk/amazon-bedrock",
+            options: { name: "amazon-bedrock" },
+          },
+          {},
+        )
+        expect(bedrockBaseURL(result.sdk)).toBe("https://bedrock-runtime.us-east-1.amazonaws.com")
+      }),
+    ),
+  )
+
+  it.effect("loads bearer token option into env and uses bearer auth", () =>
+    withEnv({ AWS_ACCESS_KEY_ID: undefined, AWS_BEARER_TOKEN_BEDROCK: undefined, AWS_PROFILE: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const headers: Array<string | null> = []
+        yield* plugin.add(AmazonBedrockPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+            package: "@ai-sdk/amazon-bedrock",
+            options: {
+              name: "amazon-bedrock",
+              bearerToken: "option-token",
+              fetch: async (_input: Parameters<typeof fetch>[0], init?: RequestInit) => {
+                headers.push(new Headers(init?.headers).get("Authorization"))
+                return new Response("{}")
+              },
+            },
+          },
+          {},
+        )
+        yield* Effect.promise(() => bedrockFetch(result.sdk)("https://bedrock.example", { method: "POST" }))
+        expect(process.env.AWS_BEARER_TOKEN_BEDROCK).toBe("option-token")
+        expect(headers).toEqual(["Bearer option-token"])
+      }),
+    ),
+  )
+
+  it.effect("prefers bearer token env over bearer token option", () =>
+    withEnv({ AWS_BEARER_TOKEN_BEDROCK: "env-token" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const headers: Array<string | null> = []
+        yield* plugin.add(AmazonBedrockPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+            package: "@ai-sdk/amazon-bedrock",
+            options: {
+              name: "amazon-bedrock",
+              bearerToken: "option-token",
+              fetch: async (_input: Parameters<typeof fetch>[0], init?: RequestInit) => {
+                headers.push(new Headers(init?.headers).get("Authorization"))
+                return new Response("{}")
+              },
+            },
+          },
+          {},
+        )
+        yield* Effect.promise(() => bedrockFetch(result.sdk)("https://bedrock.example", { method: "POST" }))
+        expect(process.env.AWS_BEARER_TOKEN_BEDROCK).toBe("env-token")
+        expect(headers).toEqual(["Bearer env-token"])
+      }),
+    ),
+  )
+
+  it.effect("creates Mantle SDK with GPT-5 OpenAI base path", () =>
+    withEnv({ AWS_BEARER_TOKEN_BEDROCK: undefined, AWS_PROFILE: undefined, AWS_ACCESS_KEY_ID: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(AmazonBedrockPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("amazon-bedrock", "openai.gpt-5.5", {
+              api: { type: "aisdk", package: "@ai-sdk/amazon-bedrock/mantle" },
+            }),
+            package: "@ai-sdk/amazon-bedrock/mantle",
+            options: {
+              name: "amazon-bedrock",
+              bearerToken: "token",
+              baseURL: "https://bedrock-mantle.us-east-2.api.aws/openai/v1",
+              region: "us-east-2",
+            },
+          },
+          {},
+        )
+        const language = result.sdk.responses("openai.gpt-5.5")
+        expect(openAIUrl(language, "/responses", "openai.gpt-5.5")).toBe(
+          "https://bedrock-mantle.us-east-2.api.aws/openai/v1/responses",
+        )
+      }),
+    ),
+  )
+
+  it.effect("selects Mantle APIs without Bedrock cross-region prefixes", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(AmazonBedrockPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("amazon-bedrock", "openai.gpt-5.5", {
+            api: { type: "aisdk", package: "@ai-sdk/amazon-bedrock/mantle" },
+          }),
+          sdk: fakeSelectorSdk(calls),
+          options: { baseURL: "https://bedrock-mantle.us-east-2.api.aws/openai/v1", region: "us-east-2" },
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("amazon-bedrock", "openai.gpt-oss-safeguard-120b", {
+            api: { type: "aisdk", package: "@ai-sdk/amazon-bedrock/mantle" },
+          }),
+          sdk: fakeSelectorSdk(calls),
+          options: { region: "us-east-1" },
+        },
+        {},
+      )
+      expect(calls).toEqual(["responses:openai.gpt-5.5", "chat:openai.gpt-oss-safeguard-120b"])
+    }),
+  )
+
+  it.effect("ignores other Bedrock provider subpaths", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(AmazonBedrockPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5", {
+            api: { type: "aisdk", package: "@ai-sdk/amazon-bedrock/anthropic" },
+          }),
+          package: "@ai-sdk/amazon-bedrock/anthropic",
+          options: { name: "amazon-bedrock" },
+        },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("uses SigV4 credential env when bearer token is absent", () =>
+    withEnv(
+      {
+        AWS_ACCESS_KEY_ID: "test-access-key",
+        AWS_BEARER_TOKEN_BEDROCK: undefined,
+        AWS_REGION: "us-east-1",
+        AWS_SECRET_ACCESS_KEY: "test-secret-key",
+        AWS_SESSION_TOKEN: "test-session-token",
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          const headers: Array<string | null> = []
+          yield* plugin.add(AmazonBedrockPlugin)
+          const result = yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+              package: "@ai-sdk/amazon-bedrock",
+              options: {
+                name: "amazon-bedrock",
+                fetch: async (_input: Parameters<typeof fetch>[0], init?: RequestInit) => {
+                  headers.push(new Headers(init?.headers).get("Authorization"))
+                  return new Response("{}")
+                },
+              },
+            },
+            {},
+          )
+          yield* Effect.promise(() =>
+            bedrockFetch(result.sdk)("https://bedrock-runtime.us-east-1.amazonaws.com/model/test/invoke", {
+              body: "{}",
+              method: "POST",
+            }),
+          )
+          expect(headers[0]?.startsWith("AWS4-HMAC-SHA256 ")).toBe(true)
+        }),
+    ),
+  )
+
+  it.effect("applies legacy cross-region inference prefixes", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(AmazonBedrockPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: {},
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: { region: "eu-west-1" },
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("amazon-bedrock", "global.anthropic.claude-sonnet-4-5"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: { region: "eu-west-1" },
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: { region: "ap-northeast-1" },
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: { region: "ap-southeast-2" },
+        },
+        {},
+      )
+      expect(calls).toEqual([
+        "languageModel:us.anthropic.claude-sonnet-4-5",
+        "languageModel:eu.anthropic.claude-sonnet-4-5",
+        "languageModel:global.anthropic.claude-sonnet-4-5",
+        "languageModel:jp.anthropic.claude-sonnet-4-5",
+        "languageModel:au.anthropic.claude-sonnet-4-5",
+      ])
+    }),
+  )
+
+  it.effect("uses AWS_REGION for language prefixes when region option is absent", () =>
+    withEnv({ AWS_REGION: "eu-west-1" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const calls: string[] = []
+        yield* plugin.add(AmazonBedrockPlugin)
+        yield* plugin.trigger(
+          "aisdk.language",
+          {
+            model: model("amazon-bedrock", "anthropic.claude-sonnet-4-5"),
+            sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+            options: {},
+          },
+          {},
+        )
+        expect(calls).toEqual(["languageModel:eu.anthropic.claude-sonnet-4-5"])
+      }),
+    ),
+  )
+
+  it.effect("applies the full legacy cross-region prefix matrix", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      const cases = [
+        { region: "us-east-1", modelID: "amazon.nova-micro-v1:0", expected: "us.amazon.nova-micro-v1:0" },
+        { region: "us-east-1", modelID: "amazon.nova-lite-v1:0", expected: "us.amazon.nova-lite-v1:0" },
+        { region: "us-east-1", modelID: "amazon.nova-pro-v1:0", expected: "us.amazon.nova-pro-v1:0" },
+        { region: "us-east-1", modelID: "amazon.nova-premier-v1:0", expected: "us.amazon.nova-premier-v1:0" },
+        { region: "us-east-1", modelID: "amazon.nova-2-lite-v1:0", expected: "us.amazon.nova-2-lite-v1:0" },
+        { region: "us-east-1", modelID: "anthropic.claude-sonnet-4-5", expected: "us.anthropic.claude-sonnet-4-5" },
+        { region: "us-east-1", modelID: "deepseek.r1-v1:0", expected: "us.deepseek.r1-v1:0" },
+        { region: "us-gov-west-1", modelID: "anthropic.claude-sonnet-4-5", expected: "anthropic.claude-sonnet-4-5" },
+        { region: "us-east-1", modelID: "cohere.command-r-plus-v1:0", expected: "cohere.command-r-plus-v1:0" },
+        { region: "eu-west-1", modelID: "anthropic.claude-sonnet-4-5", expected: "eu.anthropic.claude-sonnet-4-5" },
+        { region: "eu-west-2", modelID: "amazon.nova-lite-v1:0", expected: "eu.amazon.nova-lite-v1:0" },
+        { region: "eu-west-3", modelID: "amazon.nova-micro-v1:0", expected: "eu.amazon.nova-micro-v1:0" },
+        {
+          region: "eu-north-1",
+          modelID: "meta.llama3-70b-instruct-v1:0",
+          expected: "eu.meta.llama3-70b-instruct-v1:0",
+        },
+        { region: "eu-central-1", modelID: "mistral.pixtral-large-v1:0", expected: "eu.mistral.pixtral-large-v1:0" },
+        { region: "eu-south-1", modelID: "anthropic.claude-sonnet-4-5", expected: "eu.anthropic.claude-sonnet-4-5" },
+        { region: "eu-south-2", modelID: "anthropic.claude-sonnet-4-5", expected: "eu.anthropic.claude-sonnet-4-5" },
+        { region: "eu-central-2", modelID: "anthropic.claude-sonnet-4-5", expected: "anthropic.claude-sonnet-4-5" },
+        { region: "eu-west-1", modelID: "cohere.command-r-plus-v1:0", expected: "cohere.command-r-plus-v1:0" },
+        {
+          region: "ap-southeast-2",
+          modelID: "anthropic.claude-sonnet-4-5",
+          expected: "au.anthropic.claude-sonnet-4-5",
+        },
+        {
+          region: "ap-southeast-4",
+          modelID: "anthropic.claude-haiku-v1:0",
+          expected: "au.anthropic.claude-haiku-v1:0",
+        },
+        { region: "ap-southeast-2", modelID: "anthropic.claude-opus-4", expected: "apac.anthropic.claude-opus-4" },
+        {
+          region: "ap-northeast-1",
+          modelID: "anthropic.claude-sonnet-4-5",
+          expected: "jp.anthropic.claude-sonnet-4-5",
+        },
+        { region: "ap-northeast-1", modelID: "amazon.nova-pro-v1:0", expected: "jp.amazon.nova-pro-v1:0" },
+        { region: "ap-south-1", modelID: "anthropic.claude-sonnet-4-5", expected: "apac.anthropic.claude-sonnet-4-5" },
+        { region: "ap-south-1", modelID: "amazon.nova-lite-v1:0", expected: "apac.amazon.nova-lite-v1:0" },
+        { region: "ca-central-1", modelID: "anthropic.claude-sonnet-4-5", expected: "anthropic.claude-sonnet-4-5" },
+        {
+          region: "us-east-1",
+          modelID: "global.anthropic.claude-sonnet-4-5",
+          expected: "global.anthropic.claude-sonnet-4-5",
+        },
+        { region: "us-east-1", modelID: "us.anthropic.claude-sonnet-4-5", expected: "us.anthropic.claude-sonnet-4-5" },
+        { region: "eu-west-1", modelID: "eu.anthropic.claude-sonnet-4-5", expected: "eu.anthropic.claude-sonnet-4-5" },
+        {
+          region: "ap-northeast-1",
+          modelID: "jp.anthropic.claude-sonnet-4-5",
+          expected: "jp.anthropic.claude-sonnet-4-5",
+        },
+        {
+          region: "ap-south-1",
+          modelID: "apac.anthropic.claude-sonnet-4-5",
+          expected: "apac.anthropic.claude-sonnet-4-5",
+        },
+        {
+          region: "ap-southeast-2",
+          modelID: "au.anthropic.claude-sonnet-4-5",
+          expected: "au.anthropic.claude-sonnet-4-5",
+        },
+      ]
+      yield* plugin.add(AmazonBedrockPlugin)
+      for (const item of cases) {
+        yield* plugin.trigger(
+          "aisdk.language",
+          {
+            model: model("amazon-bedrock", item.modelID),
+            sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+            options: { region: item.region },
+          },
+          {},
+        )
+      }
+      expect(calls).toEqual(cases.map((item) => `languageModel:${item.expected}`))
+    }),
+  )
+
+  it.effect("ignores non-Bedrock providers for language selection", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(AmazonBedrockPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("openai", "anthropic.claude-sonnet-4-5"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: { region: "eu-west-1" },
+        },
+        {},
+      )
+      expect(calls).toEqual([])
+      expect(result.language).toBeUndefined()
+    }),
+  )
+})

packages/core/test/plugin/provider-anthropic.test.ts

@@ -0,0 +1,97 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { AnthropicPlugin } from "@opencode-ai/core/plugin/provider/anthropic"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { it, model, provider } from "./provider-helper"
+
+describe("AnthropicPlugin", () => {
+  it.effect("applies legacy beta headers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(AnthropicPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("anthropic", {
+          api: { type: "aisdk", package: "@ai-sdk/anthropic" },
+          request: { headers: { Existing: "1" }, body: {} },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+          draft.request = item.request
+        })
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.anthropic)).request.headers["anthropic-beta"]).toBe(
+        "interleaved-thinking-2025-05-14,fine-grained-tool-streaming-2025-05-14",
+      )
+      expect((yield* catalog.provider.get(ProviderV2.ID.anthropic)).request.headers.Existing).toBe("1")
+    }),
+  )
+
+  it.effect("ignores non-Anthropic providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(AnthropicPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => catalog.provider.update(provider("openai").id, () => {}))
+      expect((yield* catalog.provider.get(ProviderV2.ID.openai)).request.headers["anthropic-beta"]).toBeUndefined()
+    }),
+  )
+
+  it.effect("creates Anthropic SDKs with the model provider ID as the SDK name", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const providers: string[] = []
+      yield* plugin.add(AnthropicPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("anthropic-sdk-inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              providers.push(evt.sdk.languageModel("claude-sonnet-4-5").provider)
+            }),
+        }),
+      })
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-anthropic", "claude-sonnet-4-5"),
+          package: "@ai-sdk/anthropic",
+          options: { name: "custom-anthropic", apiKey: "test" },
+        },
+        {},
+      )
+      expect(providers).toEqual(["custom-anthropic"])
+    }),
+  )
+
+  it.effect("uses the Anthropic provider ID as the SDK name for the bundled Anthropic provider", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const providers: string[] = []
+      yield* plugin.add(AnthropicPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("anthropic-sdk-inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              providers.push(evt.sdk.languageModel("claude-sonnet-4-5").provider)
+            }),
+        }),
+      })
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("anthropic", "claude-sonnet-4-5"),
+          package: "@ai-sdk/anthropic",
+          options: { name: "anthropic", apiKey: "test" },
+        },
+        {},
+      )
+      expect(providers).toEqual(["anthropic"])
+    }),
+  )
+})

packages/core/test/plugin/provider-azure-cognitive-services.test.ts

@@ -0,0 +1,141 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { AzureCognitiveServicesPlugin } from "@opencode-ai/core/plugin/provider/azure"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { fakeSelectorSdk, it, model, provider, withEnv } from "./provider-helper"
+
+describe("AzureCognitiveServicesPlugin", () => {
+  it.effect("maps the resource env var to the Azure SDK baseURL", () =>
+    withEnv({ AZURE_COGNITIVE_SERVICES_RESOURCE_NAME: "cognitive" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(AzureCognitiveServicesPlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          catalog.provider.update(ProviderV2.ID.make("azure-cognitive-services"), (item) => {
+            item.api = { type: "aisdk", package: "@ai-sdk/openai-compatible" }
+          })
+        })
+        const result = yield* catalog.provider.get(ProviderV2.ID.make("azure-cognitive-services"))
+        expect(result.api).toEqual({
+          type: "aisdk",
+          package: "@ai-sdk/openai-compatible",
+          url: "https://cognitive.cognitiveservices.azure.com/openai",
+        })
+        expect(result.request.body.baseURL).toBeUndefined()
+        expect(result.request.body.resourceName).toBeUndefined()
+      }),
+    ),
+  )
+
+  it.effect("leaves baseURL unset without resource env and ignores other providers", () =>
+    withEnv({ AZURE_COGNITIVE_SERVICES_RESOURCE_NAME: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(AzureCognitiveServicesPlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const azure = provider("azure-cognitive-services", {
+            api: { type: "aisdk", package: "@ai-sdk/openai-compatible" },
+          })
+          const openai = provider("openai")
+          catalog.provider.update(azure.id, (item) => {
+            item.api = azure.api
+          })
+          catalog.provider.update(openai.id, (item) => {
+            item.api = openai.api
+          })
+        })
+        const azure = yield* catalog.provider.get(ProviderV2.ID.make("azure-cognitive-services"))
+        const openai = yield* catalog.provider.get(ProviderV2.ID.openai)
+        expect(azure.request.body.baseURL).toBeUndefined()
+        expect(azure.api).toEqual({ type: "aisdk", package: "@ai-sdk/openai-compatible" })
+        expect(openai.request.body.baseURL).toBeUndefined()
+        expect(openai.api).toEqual({ type: "aisdk", package: "test-provider" })
+      }),
+    ),
+  )
+
+  it.effect("selects chat only for completion URLs", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(AzureCognitiveServicesPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("azure-cognitive-services", "deployment"),
+          sdk: fakeSelectorSdk(calls),
+          options: { useCompletionUrls: true },
+        },
+        {},
+      )
+      expect(calls).toEqual(["chat:deployment"])
+    }),
+  )
+
+  it.effect("uses the legacy Azure selector order and provider guard", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(AzureCognitiveServicesPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("azure-cognitive-services", "deployment"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      const ignored = yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("openai", "deployment"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      expect(calls).toEqual(["responses:deployment"])
+      expect(ignored.language).toBeUndefined()
+    }),
+  )
+
+  it.effect("falls back from responses to messages, chat, then languageModel", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      const sdk = fakeSelectorSdk(calls)
+      yield* plugin.add(AzureCognitiveServicesPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("azure-cognitive-services", "messages-deployment"),
+          sdk: { messages: sdk.messages, chat: sdk.chat, languageModel: sdk.languageModel },
+          options: {},
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("azure-cognitive-services", "chat-deployment"),
+          sdk: { chat: sdk.chat, languageModel: sdk.languageModel },
+          options: {},
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("azure-cognitive-services", "language-deployment"),
+          sdk: { languageModel: sdk.languageModel },
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual([
+        "messages:messages-deployment",
+        "chat:chat-deployment",
+        "languageModel:language-deployment",
+      ])
+    }),
+  )
+})

packages/core/test/plugin/provider-azure.test.ts

@@ -0,0 +1,280 @@
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { Credential } from "@opencode-ai/core/credential"
+import { Connector } from "@opencode-ai/core/connector"
+import { Database } from "@opencode-ai/core/database/database"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { EventV2 } from "@opencode-ai/core/event"
+import { Location } from "@opencode-ai/core/location"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { AzurePlugin } from "@opencode-ai/core/plugin/provider/azure"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { AbsolutePath } from "@opencode-ai/core/schema"
+import { location } from "../fixture/location"
+import { testEffect } from "../lib/effect"
+import { fakeSelectorSdk, it, model, npmLayer, provider, withEnv } from "./provider-helper"
+
+const itWithAccount = testEffect(
+  Catalog.locationLayer.pipe(
+    Layer.provideMerge(
+      Credential.layer.pipe(
+        Layer.provide(Database.layerFromPath(":memory:").pipe(Layer.fresh)),
+        Layer.provide(EventV2.defaultLayer),
+      ),
+    ),
+    Layer.provideMerge(EventV2.defaultLayer),
+    Layer.provideMerge(
+      Layer.succeed(Location.Service, Location.Service.of(location({ directory: AbsolutePath.make("test") }))),
+    ),
+    Layer.provideMerge(npmLayer),
+  ),
+)
+
+describe("AzurePlugin", () => {
+  it.effect("resolves resourceName from env", () =>
+    withEnv({ AZURE_RESOURCE_NAME: "from-env" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(AzurePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          catalog.provider.update(ProviderV2.ID.azure, (item) => {
+            item.api = { type: "aisdk", package: "@ai-sdk/azure" }
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.azure)).request.body.resourceName).toBe("from-env")
+      }),
+    ),
+  )
+
+  it.effect("keeps explicit resourceName over env and ignores other providers", () =>
+    withEnv({ AZURE_RESOURCE_NAME: "from-env" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(AzurePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const azure = provider("azure", {
+            api: { type: "aisdk", package: "@ai-sdk/azure" },
+            request: { headers: {}, body: { resourceName: "from-config" } },
+          })
+          catalog.provider.update(azure.id, (item) => {
+            item.api = azure.api
+            item.request = azure.request
+          })
+          catalog.provider.update(ProviderV2.ID.openai, () => {})
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.azure)).request.body.resourceName).toBe("from-config")
+        expect((yield* catalog.provider.get(ProviderV2.ID.openai)).request.body.resourceName).toBeUndefined()
+      }),
+    ),
+  )
+
+  itWithAccount.effect("prefers account resourceName over env", () =>
+    withEnv(
+      {
+        AZURE_RESOURCE_NAME: "from-env",
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          const credentials = yield* Credential.Service
+          const catalog = yield* Catalog.Service
+          yield* credentials.create({
+            connectorID: Connector.ID.make("azure"),
+            methodID: Connector.MethodID.make("api-key"),
+            value: new Credential.Key({
+              type: "key",
+              key: "key",
+              metadata: { resourceName: "from-account" },
+            }),
+          })
+          yield* plugin.add(AzurePlugin)
+          const transform = yield* catalog.transform()
+          yield* transform((catalog) => {
+            catalog.provider.update(ProviderV2.ID.azure, (item) => {
+              item.api = { type: "aisdk", package: "@ai-sdk/azure" }
+            })
+          })
+          expect((yield* catalog.provider.get(ProviderV2.ID.azure)).request.body.resourceName).toBe("from-account")
+        }),
+    ),
+  )
+
+  it.effect("falls back to env when configured resourceName is blank", () =>
+    withEnv({ AZURE_RESOURCE_NAME: "from-env" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(AzurePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const azure = provider("azure", {
+            api: { type: "aisdk", package: "@ai-sdk/azure" },
+            request: { headers: {}, body: { resourceName: "" } },
+          })
+          catalog.provider.update(azure.id, (item) => {
+            item.api = azure.api
+            item.request = azure.request
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.azure)).request.body.resourceName).toBe("from-env")
+      }),
+    ),
+  )
+
+  it.effect("falls back to env when configured resourceName is whitespace", () =>
+    withEnv({ AZURE_RESOURCE_NAME: "from-env" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(AzurePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const azure = provider("azure", {
+            api: { type: "aisdk", package: "@ai-sdk/azure" },
+            request: { headers: {}, body: { resourceName: "   " } },
+          })
+          catalog.provider.update(azure.id, (item) => {
+            item.api = azure.api
+            item.request = azure.request
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.azure)).request.body.resourceName).toBe("from-env")
+      }),
+    ),
+  )
+
+  it.effect("allows configured baseURL without resourceName", () =>
+    withEnv({ AZURE_RESOURCE_NAME: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(AzurePlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("azure", "deployment"),
+            package: "@ai-sdk/azure",
+            options: { name: "azure", baseURL: "https://proxy.example.com/openai" },
+          },
+          {},
+        )
+        expect(result.sdk).toBeDefined()
+      }),
+    ),
+  )
+
+  it.effect("rejects missing resourceName when baseURL is not configured", () =>
+    withEnv({ AZURE_RESOURCE_NAME: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(AzurePlugin)
+        const exit = yield* plugin
+          .trigger(
+            "aisdk.sdk",
+            { model: model("azure", "deployment"), package: "@ai-sdk/azure", options: { name: "azure" } },
+            {},
+          )
+          .pipe(Effect.exit)
+        expect(exit._tag).toBe("Failure")
+      }),
+    ),
+  )
+
+  it.effect("selects chat only for completion URLs", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(AzurePlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("azure", "deployment"), sdk: fakeSelectorSdk(calls), options: { useCompletionUrls: true } },
+        {},
+      )
+      expect(calls).toEqual(["chat:deployment"])
+    }),
+  )
+
+  it.effect("selects chat from per-call useCompletionUrls", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(AzurePlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("azure", "deployment"), sdk: fakeSelectorSdk(calls), options: { useCompletionUrls: true } },
+        {},
+      )
+      expect(calls).toEqual(["chat:deployment"])
+    }),
+  )
+
+  it.effect("ignores model useCompletionUrls when per-call option is unset", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(AzurePlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("azure", "deployment", {
+            request: { headers: {}, body: { useCompletionUrls: true } },
+          }),
+          sdk: fakeSelectorSdk(calls),
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual(["responses:deployment"])
+    }),
+  )
+
+  it.effect("uses the legacy Azure selector order and provider guard", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(AzurePlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("azure", "deployment"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      const ignored = yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("openai", "deployment"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      expect(calls).toEqual(["responses:deployment"])
+      expect(ignored.language).toBeUndefined()
+    }),
+  )
+
+  it.effect("falls back through the legacy Azure selector order", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      const make = (method: string) => (id: string) => {
+        calls.push(`${method}:${id}`)
+        return { modelId: id, provider: method, specificationVersion: "v3" }
+      }
+      yield* plugin.add(AzurePlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("azure", "messages-deployment"),
+          sdk: { messages: make("messages"), chat: make("chat"), languageModel: make("languageModel") },
+          options: {},
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("azure", "language-deployment"), sdk: { languageModel: make("languageModel") }, options: {} },
+        {},
+      )
+      expect(calls).toEqual(["messages:messages-deployment", "languageModel:language-deployment"])
+    }),
+  )
+})

packages/core/test/plugin/provider-cerebras.test.ts

@@ -0,0 +1,107 @@
+import { describe, expect, mock } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { CerebrasPlugin } from "@opencode-ai/core/plugin/provider/cerebras"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { it, model } from "./provider-helper"
+
+const cerebrasOptions: Record<string, unknown>[] = []
+
+void mock.module("@ai-sdk/cerebras", () => ({
+  createCerebras: (options: Record<string, unknown>) => {
+    const snapshot = { ...options }
+    cerebrasOptions.push(snapshot)
+    return {
+      languageModel: (modelID: string) => ({ modelID, provider: snapshot.name, specificationVersion: "v3" }),
+    }
+  },
+}))
+
+describe("CerebrasPlugin", () => {
+  it.effect("applies the legacy integration header", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(CerebrasPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        catalog.provider.update(ProviderV2.ID.make("cerebras"), (item) => {
+          item.api = { type: "aisdk", package: "@ai-sdk/cerebras" }
+          item.request.headers.Existing = "1"
+        })
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("cerebras"))).request.headers).toEqual({
+        Existing: "1",
+        "X-Cerebras-3rd-Party-Integration": "opencode",
+      })
+    }),
+  )
+
+  it.effect("ignores non-Cerebras providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(CerebrasPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => catalog.provider.update(ProviderV2.ID.make("groq"), () => {}))
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("groq"))).request.headers).toEqual({})
+    }),
+  )
+
+  it.effect("creates a bundled Cerebras SDK with the model provider ID as the SDK name", () =>
+    Effect.gen(function* () {
+      cerebrasOptions.length = 0
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(CerebrasPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-cerebras", "llama-4-scout-17b-16e-instruct"),
+          package: "@ai-sdk/cerebras",
+          options: { name: "custom-cerebras", apiKey: "test" },
+        },
+        {},
+      )
+      expect(cerebrasOptions).toEqual([{ name: "custom-cerebras", apiKey: "test" }])
+      expect(result.sdk.languageModel("llama-4-scout-17b-16e-instruct").provider).toBe("custom-cerebras")
+    }),
+  )
+
+  it.effect("preserves an explicit bundled Cerebras SDK name option", () =>
+    Effect.gen(function* () {
+      cerebrasOptions.length = 0
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(CerebrasPlugin)
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-cerebras", "llama-4-scout-17b-16e-instruct"),
+          package: "@ai-sdk/cerebras",
+          options: { name: "configured-cerebras", apiKey: "test" },
+        },
+        {},
+      )
+      expect(cerebrasOptions).toEqual([{ name: "configured-cerebras", apiKey: "test" }])
+    }),
+  )
+
+  it.effect("ignores non-Cerebras SDK packages", () =>
+    Effect.gen(function* () {
+      cerebrasOptions.length = 0
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(CerebrasPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-cerebras", "llama-4-scout-17b-16e-instruct"),
+          package: "@ai-sdk/groq",
+          options: { name: "custom-cerebras", apiKey: "test" },
+        },
+        {},
+      )
+      expect(cerebrasOptions).toEqual([])
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+})

packages/core/test/plugin/provider-cloudflare-ai-gateway.test.ts

@@ -0,0 +1,384 @@
+import { describe, expect, mock } from "bun:test"
+import { Effect } from "effect"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { CloudflareAIGatewayPlugin } from "@opencode-ai/core/plugin/provider/cloudflare-ai-gateway"
+import { it, model, withEnv } from "./provider-helper"
+
+const aiGatewayCalls: Record<string, unknown>[] = []
+const unifiedCalls: string[] = []
+const gatewayModelCalls: unknown[] = []
+
+function captureAiGatewayOptions(options: Record<string, unknown>) {
+  const nested =
+    options.options && typeof options.options === "object" ? (options.options as Record<string, unknown>) : undefined
+  return {
+    ...options,
+    ...(nested
+      ? {
+          options: {
+            ...nested,
+            headers:
+              nested.headers && typeof nested.headers === "object"
+                ? { ...(nested.headers as Record<string, unknown>) }
+                : nested.headers,
+          },
+        }
+      : {}),
+  }
+}
+
+function resetCalls() {
+  aiGatewayCalls.length = 0
+  unifiedCalls.length = 0
+  gatewayModelCalls.length = 0
+}
+
+function cloudflareEnv(overrides: Record<string, string | undefined> = {}) {
+  return {
+    CLOUDFLARE_ACCOUNT_ID: "env-account",
+    CLOUDFLARE_GATEWAY_ID: "env-gateway",
+    CLOUDFLARE_API_TOKEN: "env-token",
+    CF_AIG_TOKEN: undefined,
+    ...overrides,
+  }
+}
+
+mock.module("ai-gateway-provider", () => ({
+  createAiGateway(options: Record<string, unknown>) {
+    aiGatewayCalls.push(captureAiGatewayOptions(options))
+    return (input: unknown) => {
+      gatewayModelCalls.push(input)
+      return {
+        modelId: input,
+        provider: "cloudflare-ai-gateway",
+        specificationVersion: "v3",
+      }
+    }
+  },
+}))
+
+mock.module("ai-gateway-provider/providers/unified", () => ({
+  createUnified() {
+    return (modelID: string) => {
+      unifiedCalls.push(modelID)
+      return { unifiedModelID: modelID }
+    }
+  },
+}))
+
+describe("CloudflareAIGatewayPlugin", () => {
+  it.effect("requires account, gateway, and token before creating the unified SDK", () =>
+    withEnv(
+      {
+        CLOUDFLARE_ACCOUNT_ID: "acct",
+        CLOUDFLARE_GATEWAY_ID: "gateway",
+        CLOUDFLARE_API_TOKEN: "token",
+        CF_AIG_TOKEN: undefined,
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(CloudflareAIGatewayPlugin)
+          const result = yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+              package: "ai-gateway-provider",
+              options: { name: "cloudflare-ai-gateway" },
+            },
+            {},
+          )
+          expect(result.sdk.languageModel("openai/gpt-5")).toBeDefined()
+        }),
+    ),
+  )
+
+  it.effect("passes legacy metadata, cache, log, and User-Agent values under the AI Gateway options key", () =>
+    withEnv(cloudflareEnv(), () =>
+      Effect.gen(function* () {
+        resetCalls()
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareAIGatewayPlugin)
+
+        yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+            package: "ai-gateway-provider",
+            options: {
+              name: "cloudflare-ai-gateway",
+              metadata: { invoked_by: "test", project: "opencode" },
+              cacheTtl: 300,
+              cacheKey: "cache-key",
+              skipCache: true,
+              collectLog: false,
+            },
+          },
+          {},
+        )
+
+        expect(aiGatewayCalls).toHaveLength(1)
+        expect(aiGatewayCalls[0]).toEqual({
+          accountId: "env-account",
+          gateway: "env-gateway",
+          apiKey: "env-token",
+          options: {
+            metadata: { invoked_by: "test", project: "opencode" },
+            cacheTtl: 300,
+            cacheKey: "cache-key",
+            skipCache: true,
+            collectLog: false,
+            headers: {
+              "User-Agent": expect.stringContaining("opencode/"),
+            },
+          },
+        })
+      }),
+    ),
+  )
+
+  it.effect("parses legacy cf-aig-metadata header when metadata option is absent", () =>
+    withEnv(cloudflareEnv(), () =>
+      Effect.gen(function* () {
+        resetCalls()
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareAIGatewayPlugin)
+
+        yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+            package: "ai-gateway-provider",
+            options: {
+              name: "cloudflare-ai-gateway",
+              headers: {
+                "cf-aig-metadata": JSON.stringify({ invoked_by: "header", project: "opencode" }),
+              },
+            },
+          },
+          {},
+        )
+
+        expect(aiGatewayCalls[0]?.options).toMatchObject({
+          metadata: { invoked_by: "header", project: "opencode" },
+        })
+      }),
+    ),
+  )
+
+  it.effect("prefers Cloudflare env values over auth/config-derived options", () =>
+    withEnv(cloudflareEnv(), () =>
+      Effect.gen(function* () {
+        resetCalls()
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareAIGatewayPlugin)
+
+        yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+            package: "ai-gateway-provider",
+            options: {
+              name: "cloudflare-ai-gateway",
+              accountId: "auth-account",
+              gateway: "auth-gateway",
+              apiKey: "auth-token",
+            },
+          },
+          {},
+        )
+
+        expect(aiGatewayCalls[0]).toMatchObject({
+          accountId: "env-account",
+          gateway: "env-gateway",
+          apiKey: "env-token",
+        })
+      }),
+    ),
+  )
+
+  it.effect("accepts gatewayId metadata copied from auth into provider options", () =>
+    withEnv(
+      cloudflareEnv({
+        CLOUDFLARE_ACCOUNT_ID: undefined,
+        CLOUDFLARE_GATEWAY_ID: undefined,
+        CLOUDFLARE_API_TOKEN: undefined,
+      }),
+      () =>
+        Effect.gen(function* () {
+          resetCalls()
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(CloudflareAIGatewayPlugin)
+
+          yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+              package: "ai-gateway-provider",
+              options: {
+                name: "cloudflare-ai-gateway",
+                accountId: "auth-account",
+                gatewayId: "auth-gateway",
+                apiKey: "auth-token",
+              },
+            },
+            {},
+          )
+
+          expect(aiGatewayCalls[0]).toMatchObject({
+            accountId: "auth-account",
+            gateway: "auth-gateway",
+            apiKey: "auth-token",
+          })
+        }),
+    ),
+  )
+
+  it.effect("falls back to CF_AIG_TOKEN when CLOUDFLARE_API_TOKEN is unset", () =>
+    withEnv(cloudflareEnv({ CLOUDFLARE_API_TOKEN: undefined, CF_AIG_TOKEN: "cf-aig-token" }), () =>
+      Effect.gen(function* () {
+        resetCalls()
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareAIGatewayPlugin)
+
+        yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+            package: "ai-gateway-provider",
+            options: { name: "cloudflare-ai-gateway" },
+          },
+          {},
+        )
+
+        expect(aiGatewayCalls[0]).toMatchObject({ apiKey: "cf-aig-token" })
+      }),
+    ),
+  )
+
+  it.effect("does not create an SDK when account and gateway IDs are missing", () =>
+    withEnv(cloudflareEnv({ CLOUDFLARE_ACCOUNT_ID: undefined, CLOUDFLARE_GATEWAY_ID: undefined }), () =>
+      Effect.gen(function* () {
+        resetCalls()
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareAIGatewayPlugin)
+
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+            package: "ai-gateway-provider",
+            options: { name: "cloudflare-ai-gateway" },
+          },
+          {},
+        )
+
+        expect(result.sdk).toBeUndefined()
+        expect(aiGatewayCalls).toHaveLength(0)
+      }),
+    ),
+  )
+
+  it.effect("does not create an SDK when the token is missing", () =>
+    withEnv(cloudflareEnv({ CLOUDFLARE_API_TOKEN: undefined, CF_AIG_TOKEN: undefined }), () =>
+      Effect.gen(function* () {
+        resetCalls()
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareAIGatewayPlugin)
+
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+            package: "ai-gateway-provider",
+            options: { name: "cloudflare-ai-gateway" },
+          },
+          {},
+        )
+
+        expect(result.sdk).toBeUndefined()
+        expect(aiGatewayCalls).toHaveLength(0)
+      }),
+    ),
+  )
+
+  it.effect("does not replace a configured baseURL with the Cloudflare AI Gateway SDK", () =>
+    withEnv(
+      cloudflareEnv({
+        CLOUDFLARE_ACCOUNT_ID: undefined,
+        CLOUDFLARE_GATEWAY_ID: undefined,
+        CLOUDFLARE_API_TOKEN: undefined,
+      }),
+      () =>
+        Effect.gen(function* () {
+          resetCalls()
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(CloudflareAIGatewayPlugin)
+
+          const result = yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+              package: "ai-gateway-provider",
+              options: { name: "cloudflare-ai-gateway", baseURL: "https://proxy.example/v1" },
+            },
+            {},
+          )
+
+          expect(result.sdk).toBeUndefined()
+          expect(aiGatewayCalls).toHaveLength(0)
+        }),
+    ),
+  )
+
+  it.effect("maps provider/model IDs through the unified Cloudflare provider unchanged", () =>
+    withEnv(cloudflareEnv(), () =>
+      Effect.gen(function* () {
+        resetCalls()
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareAIGatewayPlugin)
+
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-ai-gateway", "anthropic/claude-sonnet-4-5"),
+            package: "ai-gateway-provider",
+            options: { name: "cloudflare-ai-gateway" },
+          },
+          {},
+        )
+
+        expect(result.sdk.languageModel("anthropic/claude-sonnet-4-5")).toEqual({
+          modelId: { unifiedModelID: "anthropic/claude-sonnet-4-5" },
+          provider: "cloudflare-ai-gateway",
+          specificationVersion: "v3",
+        })
+        expect(unifiedCalls).toEqual(["anthropic/claude-sonnet-4-5"])
+        expect(gatewayModelCalls).toEqual([{ unifiedModelID: "anthropic/claude-sonnet-4-5" }])
+      }),
+    ),
+  )
+
+  it.effect("ignores non Cloudflare AI Gateway packages", () =>
+    withEnv(cloudflareEnv(), () =>
+      Effect.gen(function* () {
+        resetCalls()
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareAIGatewayPlugin)
+
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-ai-gateway", "openai/gpt-5"),
+            package: "@ai-sdk/openai-compatible",
+            options: { name: "cloudflare-ai-gateway" },
+          },
+          {},
+        )
+
+        expect(result.sdk).toBeUndefined()
+        expect(aiGatewayCalls).toHaveLength(0)
+      }),
+    ),
+  )
+})

packages/core/test/plugin/provider-cloudflare-workers-ai.test.ts

@@ -0,0 +1,285 @@
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { Credential } from "@opencode-ai/core/credential"
+import { Connector } from "@opencode-ai/core/connector"
+import { Database } from "@opencode-ai/core/database/database"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { Location } from "@opencode-ai/core/location"
+import { EventV2 } from "@opencode-ai/core/event"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { CloudflareWorkersAIPlugin } from "@opencode-ai/core/plugin/provider/cloudflare-workers-ai"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { AbsolutePath } from "@opencode-ai/core/schema"
+import { location } from "../fixture/location"
+import { testEffect } from "../lib/effect"
+import { fakeSelectorSdk, it, model, npmLayer, withEnv } from "./provider-helper"
+
+const itWithAccount = testEffect(
+  Catalog.locationLayer.pipe(
+    Layer.provideMerge(
+      Credential.layer.pipe(
+        Layer.provide(Database.layerFromPath(":memory:").pipe(Layer.fresh)),
+        Layer.provide(EventV2.defaultLayer),
+      ),
+    ),
+    Layer.provideMerge(EventV2.defaultLayer),
+    Layer.provideMerge(
+      Layer.succeed(Location.Service, Location.Service.of(location({ directory: AbsolutePath.make("test") }))),
+    ),
+    Layer.provideMerge(npmLayer),
+  ),
+)
+
+function cloudflareLanguage(sdk: unknown, modelID = "@cf/model") {
+  return (sdk as { languageModel: (id: string) => { config: CloudflareConfig; provider: string } }).languageModel(
+    modelID,
+  )
+}
+
+type CloudflareConfig = {
+  url: (input: { path: string; modelId: string }) => string
+  headers: () => Record<string, string> | Promise<Record<string, string>>
+}
+
+function cloudflareURL(sdk: unknown, modelID = "@cf/model") {
+  return cloudflareLanguage(sdk, modelID).config.url({ path: "/chat/completions", modelId: modelID })
+}
+
+function cloudflareHeaders(sdk: unknown, modelID = "@cf/model") {
+  return cloudflareLanguage(sdk, modelID).config.headers()
+}
+
+describe("CloudflareWorkersAIPlugin", () => {
+  it.effect("maps account ID to endpoint URL and creates an OpenAI-compatible SDK", () =>
+    withEnv({ CLOUDFLARE_ACCOUNT_ID: "acct", CLOUDFLARE_API_KEY: "key" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(CloudflareWorkersAIPlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) =>
+          catalog.provider.update(ProviderV2.ID.make("cloudflare-workers-ai"), (provider) => {
+            provider.api = { type: "aisdk", package: "test-provider" }
+          }),
+        )
+        const provider = yield* catalog.provider.get(ProviderV2.ID.make("cloudflare-workers-ai"))
+        const sdk = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-workers-ai", "@cf/model", { api: provider.api }),
+            package: "@ai-sdk/openai-compatible",
+            options: { name: "cloudflare-workers-ai", headers: { custom: "header" } },
+          },
+          {},
+        )
+        expect(provider.api).toEqual({
+          type: "aisdk",
+          package: "test-provider",
+          url: "https://api.cloudflare.com/client/v4/accounts/acct/ai/v1",
+        })
+        expect(sdk.sdk).toBeDefined()
+      }),
+    ),
+  )
+
+  it.effect("preserves a configured endpoint URL instead of deriving one from account ID", () =>
+    withEnv({ CLOUDFLARE_ACCOUNT_ID: "acct" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(CloudflareWorkersAIPlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) =>
+          catalog.provider.update(ProviderV2.ID.make("cloudflare-workers-ai"), (provider) => {
+            provider.api = { type: "aisdk", package: "test-provider", url: "https://proxy.example/v1" }
+          }),
+        )
+        expect((yield* catalog.provider.get(ProviderV2.ID.make("cloudflare-workers-ai"))).api).toEqual({
+          type: "aisdk",
+          package: "test-provider",
+          url: "https://proxy.example/v1",
+        })
+      }),
+    ),
+  )
+
+  it.effect("allows a configured baseURL without account ID", () =>
+    withEnv({ CLOUDFLARE_ACCOUNT_ID: undefined, CLOUDFLARE_API_KEY: "key" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareWorkersAIPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-workers-ai", "@cf/model", {
+              api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://proxy.example/v1" },
+            }),
+            package: "@ai-sdk/openai-compatible",
+            options: { name: "cloudflare-workers-ai", baseURL: "https://proxy.example/v1" },
+          },
+          {},
+        )
+        expect(cloudflareURL(result.sdk)).toBe("https://proxy.example/v1/chat/completions")
+      }),
+    ),
+  )
+
+  itWithAccount.effect("falls back to account metadata when account env is absent", () =>
+    withEnv(
+      {
+        CLOUDFLARE_ACCOUNT_ID: undefined,
+        CLOUDFLARE_API_KEY: undefined,
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          const credentials = yield* Credential.Service
+          const catalog = yield* Catalog.Service
+          yield* credentials.create({
+            connectorID: Connector.ID.make("cloudflare-workers-ai"),
+            methodID: Connector.MethodID.make("api-key"),
+            value: new Credential.Key({
+              type: "key",
+              key: "account-key",
+              metadata: { accountId: "account-acct" },
+            }),
+          })
+          yield* plugin.add(CloudflareWorkersAIPlugin)
+          const transform = yield* catalog.transform()
+          yield* transform((catalog) =>
+            catalog.provider.update(ProviderV2.ID.make("cloudflare-workers-ai"), (provider) => {
+              provider.api = { type: "aisdk", package: "test-provider" }
+            }),
+          )
+          expect((yield* catalog.provider.get(ProviderV2.ID.make("cloudflare-workers-ai"))).request.body).toMatchObject(
+            {
+              apiKey: "account-key",
+              accountId: "account-acct",
+            },
+          )
+        }),
+    ),
+  )
+
+  it.effect("uses env account ID over configured account ID", () =>
+    withEnv({ CLOUDFLARE_ACCOUNT_ID: "env-acct" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(CloudflareWorkersAIPlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) =>
+          catalog.provider.update(ProviderV2.ID.make("cloudflare-workers-ai"), (provider) => {
+            provider.api = { type: "aisdk", package: "test-provider" }
+            provider.request.body.accountId = "configured-acct"
+          }),
+        )
+        expect((yield* catalog.provider.get(ProviderV2.ID.make("cloudflare-workers-ai"))).api).toEqual({
+          type: "aisdk",
+          package: "test-provider",
+          url: "https://api.cloudflare.com/client/v4/accounts/env-acct/ai/v1",
+        })
+      }),
+    ),
+  )
+
+  it.effect("uses env API key over auth or configured API key and keeps the Cloudflare User-Agent", () =>
+    withEnv({ CLOUDFLARE_ACCOUNT_ID: "acct", CLOUDFLARE_API_KEY: "env-key" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareWorkersAIPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-workers-ai", "@cf/model", {
+              api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://proxy.example/v1" },
+            }),
+            package: "@ai-sdk/openai-compatible",
+            options: {
+              name: "cloudflare-workers-ai",
+              apiKey: "auth-key",
+              baseURL: "https://proxy.example/v1",
+              headers: { custom: "header" },
+            },
+          },
+          {},
+        )
+        const headers = yield* Effect.promise(() => Promise.resolve(cloudflareHeaders(result.sdk)))
+        expect(headers.authorization).toBe("Bearer env-key")
+        expect(headers.custom).toBe("header")
+        expect(headers["user-agent"]).toMatch(/^opencode\/.* cloudflare-workers-ai \(.+\) ai-sdk\/openai-compatible\//)
+      }),
+    ),
+  )
+
+  it.effect("expands account ID vars in endpoint URLs", () =>
+    withEnv({ CLOUDFLARE_ACCOUNT_ID: "acct", CLOUDFLARE_API_KEY: "key" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareWorkersAIPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-workers-ai", "@cf/model", {
+              api: {
+                type: "aisdk",
+                package: "@ai-sdk/openai-compatible",
+                url: "https://api.cloudflare.com/client/v4/accounts/${CLOUDFLARE_ACCOUNT_ID}/ai/v1",
+              },
+            }),
+            package: "@ai-sdk/openai-compatible",
+            options: {
+              name: "cloudflare-workers-ai",
+              baseURL: "https://api.cloudflare.com/client/v4/accounts/${CLOUDFLARE_ACCOUNT_ID}/ai/v1",
+            },
+          },
+          {},
+        )
+        expect(cloudflareURL(result.sdk)).toBe(
+          "https://api.cloudflare.com/client/v4/accounts/acct/ai/v1/chat/completions",
+        )
+      }),
+    ),
+  )
+
+  it.effect("selects languageModel with the API model ID", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(CloudflareWorkersAIPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("cloudflare-workers-ai", "alias", { api: { id: ModelV2.ID.make("@cf/api-model") } }),
+          sdk: fakeSelectorSdk(calls),
+          options: {},
+        },
+        {},
+      )
+      expect(result.language).toBeDefined()
+      expect(calls).toEqual(["languageModel:@cf/api-model"])
+    }),
+  )
+
+  it.effect("does not create an SDK for non OpenAI-compatible packages", () =>
+    withEnv({ CLOUDFLARE_ACCOUNT_ID: "acct", CLOUDFLARE_API_KEY: "key" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(CloudflareWorkersAIPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("cloudflare-workers-ai", "@cf/model", {
+              api: { type: "aisdk", package: "@ai-sdk/anthropic", url: "https://proxy.example/v1" },
+            }),
+            package: "@ai-sdk/anthropic",
+            options: { name: "cloudflare-workers-ai" },
+          },
+          {},
+        )
+        expect(result.sdk).toBeUndefined()
+      }),
+    ),
+  )
+})

packages/core/test/plugin/provider-cohere.test.ts

@@ -0,0 +1,86 @@
+import { describe, expect, mock } from "bun:test"
+import { Effect } from "effect"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { CoherePlugin } from "@opencode-ai/core/plugin/provider/cohere"
+import { fakeSelectorSdk, it, model } from "./provider-helper"
+
+const cohereOptions: Record<string, any>[] = []
+
+void mock.module("@ai-sdk/cohere", () => ({
+  createCohere: (options: Record<string, any>) => {
+    cohereOptions.push({ ...options })
+    return {
+      languageModel: (modelID: string) => ({
+        modelID,
+        provider: `${options.name ?? "cohere"}.chat`,
+        specificationVersion: "v3",
+      }),
+    }
+  },
+}))
+
+describe("CoherePlugin", () => {
+  it.effect("creates a Cohere SDK only for @ai-sdk/cohere", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(CoherePlugin)
+
+      const ignored = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("cohere", "command"), package: "@ai-sdk/openai-compatible", options: { name: "cohere" } },
+        {},
+      )
+      expect(ignored.sdk).toBeUndefined()
+
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("cohere", "command"), package: "@ai-sdk/cohere", options: { name: "cohere" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("uses the model provider ID as the bundled SDK name", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(CoherePlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-cohere", "command-r-plus"),
+          package: "@ai-sdk/cohere",
+          options: { name: "custom-cohere", apiKey: "test", baseURL: "https://cohere.example" },
+        },
+        {},
+      )
+
+      expect(cohereOptions.at(-1)).toEqual({
+        name: "custom-cohere",
+        apiKey: "test",
+        baseURL: "https://cohere.example",
+      })
+      expect(result.sdk?.languageModel("command-r-plus").provider).toBe("custom-cohere.chat")
+    }),
+  )
+
+  it.effect("leaves language selection to the default languageModel fallback", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      const sdk = fakeSelectorSdk(calls)
+      yield* plugin.add(CoherePlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("cohere", "alias", { api: { id: ModelV2.ID.make("command-r-plus") } }), sdk, options: {} },
+        {},
+      )
+
+      expect(result.language).toBeUndefined()
+      expect(calls).toEqual([])
+      expect(result.language ?? sdk.languageModel("command-r-plus")).toBeDefined()
+      expect(calls).toEqual(["languageModel:command-r-plus"])
+    }),
+  )
+})

packages/core/test/plugin/provider-deepinfra.test.ts

@@ -0,0 +1,132 @@
+import { describe, expect, mock } from "bun:test"
+import { Effect, Layer } from "effect"
+import { AISDK } from "@opencode-ai/core/aisdk"
+import { EventV2 } from "@opencode-ai/core/event"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { DeepInfraPlugin } from "@opencode-ai/core/plugin/provider/deepinfra"
+import { testEffect } from "../lib/effect"
+import { it, model } from "./provider-helper"
+
+const itAISDK = testEffect(
+  Layer.provideMerge(AISDK.layer, PluginV2.locationLayer.pipe(Layer.provide(EventV2.defaultLayer))),
+)
+const deepinfraOptions: Record<string, any>[] = []
+const deepinfraLanguageModels: string[] = []
+
+void mock.module("@ai-sdk/deepinfra", () => ({
+  createDeepInfra: (options: Record<string, any>) => {
+    const captured = { ...options }
+    deepinfraOptions.push(captured)
+    return {
+      languageModel: (modelID: string) => {
+        deepinfraLanguageModels.push(modelID)
+        return { modelID, provider: `${captured.name ?? "deepinfra"}.chat`, specificationVersion: "v3" }
+      },
+    }
+  },
+}))
+
+function resetDeepInfraMock() {
+  deepinfraOptions.length = 0
+  deepinfraLanguageModels.length = 0
+}
+
+describe("DeepInfraPlugin", () => {
+  it.effect("creates a DeepInfra SDK for @ai-sdk/deepinfra", () =>
+    Effect.gen(function* () {
+      resetDeepInfraMock()
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(DeepInfraPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("deepinfra", "model"), package: "@ai-sdk/deepinfra", options: { name: "deepinfra" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("passes the model provider ID as the bundled DeepInfra SDK name", () =>
+    Effect.gen(function* () {
+      resetDeepInfraMock()
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(DeepInfraPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-deepinfra", "model"),
+          package: "@ai-sdk/deepinfra",
+          options: { name: "custom-deepinfra", apiKey: "test" },
+        },
+        {},
+      )
+      expect(result.sdk.languageModel("model").provider).toBe("custom-deepinfra.chat")
+      expect(deepinfraOptions).toEqual([{ name: "custom-deepinfra", apiKey: "test" }])
+    }),
+  )
+
+  it.effect("uses the canonical provider ID as the bundled DeepInfra SDK name", () =>
+    Effect.gen(function* () {
+      resetDeepInfraMock()
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(DeepInfraPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("deepinfra", "model"),
+          package: "@ai-sdk/deepinfra",
+          options: { name: "deepinfra", apiKey: "test" },
+        },
+        {},
+      )
+      expect(result.sdk.languageModel("model").provider).toBe("deepinfra.chat")
+      expect(deepinfraOptions).toEqual([{ name: "deepinfra", apiKey: "test" }])
+    }),
+  )
+
+  it.effect("matches only the exact bundled DeepInfra package", () =>
+    Effect.gen(function* () {
+      resetDeepInfraMock()
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(DeepInfraPlugin)
+      const packages = [
+        "unmatched-package",
+        "@ai-sdk/deepinfra-compatible",
+        "file:///tmp/@ai-sdk/deepinfra-provider.js",
+      ]
+      yield* Effect.forEach(packages, (item) =>
+        Effect.gen(function* () {
+          const ignored = yield* plugin.trigger(
+            "aisdk.sdk",
+            { model: model("deepinfra", "model"), package: item, options: { name: "deepinfra" } },
+            {},
+          )
+          expect(ignored.sdk).toBeUndefined()
+        }),
+      )
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("deepinfra", "model"), package: "@ai-sdk/deepinfra", options: { name: "deepinfra" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+      expect(deepinfraOptions).toEqual([{ name: "deepinfra" }])
+    }),
+  )
+
+  itAISDK.effect("uses the default languageModel selection for DeepInfra models", () =>
+    Effect.gen(function* () {
+      resetDeepInfraMock()
+      const plugin = yield* PluginV2.Service
+      const aisdk = yield* AISDK.Service
+      yield* plugin.add(DeepInfraPlugin)
+      const language = yield* aisdk.language(
+        model("deepinfra", "meta-llama/Llama-3.3-70B-Instruct", {
+          api: { type: "aisdk", package: "@ai-sdk/deepinfra" },
+        }),
+      )
+      expect(language.provider).toBe("deepinfra.chat")
+      expect(deepinfraLanguageModels).toEqual(["meta-llama/Llama-3.3-70B-Instruct"])
+    }),
+  )
+})

packages/core/test/plugin/provider-dynamic.test.ts

@@ -0,0 +1,174 @@
+import { Npm } from "@opencode-ai/core/npm"
+import { describe, expect } from "bun:test"
+import { Cause, Effect, Layer, Option } from "effect"
+import fs from "fs/promises"
+import os from "os"
+import path from "path"
+import { fileURLToPath } from "url"
+import { AISDK } from "@opencode-ai/core/aisdk"
+import { EventV2 } from "@opencode-ai/core/event"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { DynamicProviderPlugin } from "@opencode-ai/core/plugin/provider/dynamic"
+import { testEffect } from "../lib/effect"
+import { fixtureProvider, it, model, npmLayer } from "./provider-helper"
+
+const fixtureProviderPath = fileURLToPath(fixtureProvider)
+const itWithAISDK = testEffect(
+  AISDK.layer.pipe(Layer.provideMerge(PluginV2.locationLayer.pipe(Layer.provide(EventV2.defaultLayer)))),
+)
+
+function npmEntrypointLayer(entrypoint: Option.Option<string>) {
+  return Layer.succeed(
+    Npm.Service,
+    Npm.Service.of({
+      add: () => Effect.succeed({ directory: "", entrypoint }),
+      install: () => Effect.void,
+      which: () => Effect.succeed(Option.none<string>()),
+    }),
+  )
+}
+
+function dynamicPlugin(layer = npmLayer) {
+  return { id: DynamicProviderPlugin.id, effect: DynamicProviderPlugin.effect.pipe(Effect.provide(layer)) }
+}
+
+function tempEntrypoint(source: string) {
+  return Effect.acquireRelease(
+    Effect.promise(async () => {
+      const directory = await fs.mkdtemp(path.join(os.tmpdir(), "opencode-provider-dynamic-"))
+      const entrypoint = path.join(directory, "provider.mjs")
+      await Bun.write(entrypoint, source)
+      return { directory, entrypoint }
+    }),
+    (tmp) => Effect.promise(() => fs.rm(tmp.directory, { recursive: true, force: true })),
+  )
+}
+
+describe("DynamicProviderPlugin", () => {
+  it.effect("creates an SDK from a provider factory export", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(dynamicPlugin())
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom", "test-model"),
+          package: fixtureProvider,
+          options: { name: "custom", marker: "dynamic" },
+        },
+        {},
+      )
+      expect(result.sdk.options).toEqual({ marker: "dynamic", name: "custom" })
+      expect(result.sdk.languageModel("x")).toEqual({ modelID: "x", options: { marker: "dynamic", name: "custom" } })
+    }),
+  )
+
+  it.effect("does not override an SDK already supplied by an earlier plugin", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const sdk = { marker: "existing" }
+      yield* plugin.add(dynamicPlugin())
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom", "test-model"),
+          package: fixtureProvider,
+          options: { name: "custom", marker: "dynamic" },
+        },
+        { sdk },
+      )
+      expect(result.sdk).toBe(sdk)
+    }),
+  )
+
+  it.effect("injects the provider ID as the SDK factory name", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(dynamicPlugin())
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-provider", "test-model"),
+          package: fixtureProvider,
+          options: { name: "custom-provider", marker: "dynamic" },
+        },
+        {},
+      )
+      expect(result.sdk.options).toEqual({ marker: "dynamic", name: "custom-provider" })
+    }),
+  )
+
+  it.effect("loads npm packages through their resolved import entrypoint", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(dynamicPlugin(npmEntrypointLayer(Option.some(fixtureProviderPath))))
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("npm-provider", "test-model"),
+          package: "fixture-provider",
+          options: { name: "npm-provider", marker: "npm" },
+        },
+        {},
+      )
+      expect(result.sdk.languageModel("x")).toEqual({ modelID: "x", options: { marker: "npm", name: "npm-provider" } })
+    }),
+  )
+
+  itWithAISDK.effect("wraps missing npm entrypoint failures as AISDK init errors", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const aisdk = yield* AISDK.Service
+      yield* plugin.add(dynamicPlugin(npmEntrypointLayer(Option.none<string>())))
+      const exit = yield* aisdk
+        .language(model("missing-entrypoint", "alias", { api: { type: "aisdk", package: "fixture-provider" } }))
+        .pipe(Effect.exit)
+      expect(exit._tag).toBe("Failure")
+      if (exit._tag === "Failure") expect(Cause.prettyErrors(exit.cause).join("\n")).toContain("AISDK.InitError")
+    }),
+  )
+
+  itWithAISDK.effect("wraps dynamic import failures as AISDK init errors", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const aisdk = yield* AISDK.Service
+      yield* plugin.add(dynamicPlugin())
+      const exit = yield* aisdk
+        .language(
+          model("bad-import", "alias", { api: { type: "aisdk", package: "file:///missing/provider-factory.js" } }),
+        )
+        .pipe(Effect.exit)
+      expect(exit._tag).toBe("Failure")
+      if (exit._tag === "Failure") expect(Cause.prettyErrors(exit.cause).join("\n")).toContain("AISDK.InitError")
+    }),
+  )
+
+  itWithAISDK.live("wraps missing provider factory exports as AISDK init errors", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const aisdk = yield* AISDK.Service
+      const tmp = yield* tempEntrypoint("export const notAProviderFactory = true\n")
+      yield* plugin.add(dynamicPlugin(npmEntrypointLayer(Option.some(tmp.entrypoint))))
+      const exit = yield* aisdk
+        .language(model("missing-factory", "alias", { api: { type: "aisdk", package: "fixture-provider" } }))
+        .pipe(Effect.exit)
+      expect(exit._tag).toBe("Failure")
+      if (exit._tag === "Failure") expect(Cause.prettyErrors(exit.cause).join("\n")).toContain("AISDK.InitError")
+    }),
+  )
+
+  itWithAISDK.effect("uses the model api.id for the default language model", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const aisdk = yield* AISDK.Service
+      yield* plugin.add(dynamicPlugin())
+      const language = yield* aisdk.language(
+        model("custom", "alias", {
+          api: { id: ModelV2.ID.make("test-model-api"), type: "aisdk", package: fixtureProvider },
+        }),
+      )
+      expect(language).toMatchObject({ modelID: "test-model-api", options: { name: "custom" } })
+    }),
+  )
+})

packages/core/test/plugin/provider-gateway.test.ts

@@ -0,0 +1,87 @@
+import { describe, expect, mock } from "bun:test"
+import { Effect } from "effect"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { GatewayPlugin } from "@opencode-ai/core/plugin/provider/gateway"
+import { it, model } from "./provider-helper"
+
+const gatewayCalls: Record<string, unknown>[] = []
+const vercelGatewayModels = ["anthropic/claude-sonnet-4", "openai/gpt-5", "google/gemini-2.5-pro"]
+
+mock.module("@ai-sdk/gateway", () => ({
+  createGateway(options: Record<string, unknown>) {
+    gatewayCalls.push({ ...options })
+    return {
+      languageModel(modelID: string) {
+        return {
+          modelId: modelID,
+          provider: options.name,
+          specificationVersion: "v3",
+        }
+      },
+    }
+  },
+}))
+
+describe("GatewayPlugin", () => {
+  it.effect("creates a Gateway SDK for @ai-sdk/gateway", () =>
+    Effect.gen(function* () {
+      gatewayCalls.length = 0
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GatewayPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("gateway", "model"), package: "@ai-sdk/gateway", options: { name: "gateway" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+      expect(gatewayCalls).toHaveLength(1)
+    }),
+  )
+
+  it.effect("passes the model providerID as the Gateway SDK name", () =>
+    Effect.gen(function* () {
+      gatewayCalls.length = 0
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GatewayPlugin)
+
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("vercel", "anthropic/claude-sonnet-4"),
+          package: "@ai-sdk/gateway",
+          options: { name: "vercel", apiKey: "test-key" },
+        },
+        {},
+      )
+
+      expect(gatewayCalls).toEqual([{ name: "vercel", apiKey: "test-key" }])
+      expect(result.sdk.languageModel("anthropic/claude-sonnet-4").provider).toBe("vercel")
+    }),
+  )
+
+  it.effect("matches Vercel AI Gateway models by their @ai-sdk/gateway package", () =>
+    Effect.gen(function* () {
+      gatewayCalls.length = 0
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GatewayPlugin)
+
+      for (const modelID of vercelGatewayModels) {
+        const ignored = yield* plugin.trigger(
+          "aisdk.sdk",
+          { model: model("vercel", modelID), package: "@ai-sdk/vercel", options: { name: "vercel" } },
+          {},
+        )
+        expect(ignored.sdk).toBeUndefined()
+
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          { model: model("vercel", modelID), package: "@ai-sdk/gateway", options: { name: "vercel" } },
+          {},
+        )
+        expect(result.sdk).toBeDefined()
+      }
+
+      expect(gatewayCalls).toHaveLength(3)
+    }),
+  )
+})

packages/core/test/plugin/provider-github-copilot.test.ts

@@ -0,0 +1,196 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { GithubCopilotPlugin } from "@opencode-ai/core/plugin/provider/github-copilot"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { fakeSelectorSdk, it, model } from "./provider-helper"
+
+describe("GithubCopilotPlugin", () => {
+  it.effect("creates the bundled Copilot SDK for the GitHub Copilot package", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GithubCopilotPlugin)
+      const ignored = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("github-copilot", "gpt-5"),
+          package: "@ai-sdk/openai-compatible",
+          options: { name: "github-copilot" },
+        },
+        {},
+      )
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("github-copilot", "gpt-5"),
+          package: "@ai-sdk/github-copilot",
+          options: { name: "github-copilot" },
+        },
+        {},
+      )
+      expect(ignored.sdk).toBeUndefined()
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("selects languageModel when responses and chat are absent", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(GithubCopilotPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("github-copilot", "claude-sonnet-4"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual(["languageModel:claude-sonnet-4"])
+    }),
+  )
+
+  it.effect("selects languageModel with the API model ID when responses and chat are absent", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(GithubCopilotPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("github-copilot", "alias", { api: { id: ModelV2.ID.make("claude-sonnet-4") } }),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual(["languageModel:claude-sonnet-4"])
+    }),
+  )
+
+  it.effect("uses responses for gpt-5 models except gpt-5-mini", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(GithubCopilotPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("github-copilot", "gpt-5"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("github-copilot", "gpt-5.1-codex"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("github-copilot", "gpt-4o"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("github-copilot", "gpt-5-mini"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("github-copilot", "gpt-5-mini-2025-08-07"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      expect(calls).toEqual([
+        "responses:gpt-5",
+        "responses:gpt-5.1-codex",
+        "chat:gpt-4o",
+        "chat:gpt-5-mini",
+        "chat:gpt-5-mini-2025-08-07",
+      ])
+    }),
+  )
+
+  it.effect("uses the API model ID when selecting responses or chat", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(GithubCopilotPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("github-copilot", "default", { api: { id: ModelV2.ID.make("gpt-5") } }),
+          sdk: fakeSelectorSdk(calls),
+          options: {},
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("github-copilot", "small", { api: { id: ModelV2.ID.make("gpt-5-mini") } }),
+          sdk: fakeSelectorSdk(calls),
+          options: {},
+        },
+        {},
+      )
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("github-copilot", "sonnet", { api: { id: ModelV2.ID.make("claude-sonnet-4") } }),
+          sdk: fakeSelectorSdk(calls),
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual(["responses:gpt-5", "chat:gpt-5-mini", "chat:claude-sonnet-4"])
+    }),
+  )
+
+  it.effect("disables gpt-5-chat-latest before Copilot language selection", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(GithubCopilotPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        catalog.provider.update(ProviderV2.ID.make("github-copilot"), () => {})
+        catalog.model.update(ProviderV2.ID.make("github-copilot"), ModelV2.ID.make("gpt-5-chat-latest"), () => {})
+      })
+      expect(
+        (yield* catalog.model.get(ProviderV2.ID.make("github-copilot"), ModelV2.ID.make("gpt-5-chat-latest"))).enabled,
+      ).toBe(false)
+    }),
+  )
+
+  it.effect("does not disable gpt-5-chat-latest for non-Copilot providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(GithubCopilotPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        catalog.provider.update(ProviderV2.ID.make("custom-copilot"), () => {})
+        catalog.model.update(ProviderV2.ID.make("custom-copilot"), ModelV2.ID.make("gpt-5-chat-latest"), () => {})
+      })
+      expect(
+        (yield* catalog.model.get(ProviderV2.ID.make("custom-copilot"), ModelV2.ID.make("gpt-5-chat-latest"))).enabled,
+      ).toBe(true)
+    }),
+  )
+
+  it.effect("ignores non-Copilot providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(GithubCopilotPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("openai", "gpt-5"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      expect(calls).toEqual([])
+      expect(result.language).toBeUndefined()
+    }),
+  )
+})

packages/core/test/plugin/provider-gitlab.test.ts

@@ -0,0 +1,363 @@
+import { describe, expect, mock } from "bun:test"
+import { Effect, Layer } from "effect"
+import { Credential } from "@opencode-ai/core/credential"
+import { Connector } from "@opencode-ai/core/connector"
+import { Database } from "@opencode-ai/core/database/database"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { EventV2 } from "@opencode-ai/core/event"
+import { Location } from "@opencode-ai/core/location"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { GitLabPlugin } from "@opencode-ai/core/plugin/provider/gitlab"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { AbsolutePath } from "@opencode-ai/core/schema"
+import { location } from "../fixture/location"
+import { testEffect } from "../lib/effect"
+import { it, model, npmLayer, withEnv } from "./provider-helper"
+
+const gitlabSDKOptions: Record<string, unknown>[] = []
+
+void mock.module("gitlab-ai-provider", () => ({
+  VERSION: "test-version",
+  createGitLab: (options: Record<string, unknown>) => {
+    gitlabSDKOptions.push(options)
+    return {
+      agenticChat: (id: string, options: unknown) => ({ id, options, type: "agentic" }),
+      workflowChat: (id: string, options: unknown) => ({ id, options, type: "workflow" }),
+    }
+  },
+  discoverWorkflowModels: async () => ({ models: [], project: undefined }),
+  isWorkflowModel: (id: string) => id === "duo-workflow" || id === "duo-workflow-exact",
+}))
+
+const itWithAccount = testEffect(
+  Catalog.locationLayer.pipe(
+    Layer.provideMerge(
+      Credential.layer.pipe(
+        Layer.provide(Database.layerFromPath(":memory:").pipe(Layer.fresh)),
+        Layer.provide(EventV2.defaultLayer),
+      ),
+    ),
+    Layer.provideMerge(EventV2.defaultLayer),
+    Layer.provideMerge(
+      Layer.succeed(Location.Service, Location.Service.of(location({ directory: AbsolutePath.make("/") }))),
+    ),
+    Layer.provideMerge(npmLayer),
+  ),
+)
+
+describe("GitLabPlugin", () => {
+  it.effect("creates SDKs with legacy default instance URL, token env, headers, and feature flags", () =>
+    withEnv(
+      {
+        GITLAB_INSTANCE_URL: undefined,
+        GITLAB_TOKEN: "env-token",
+      },
+      () =>
+        Effect.gen(function* () {
+          gitlabSDKOptions.length = 0
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(GitLabPlugin)
+          yield* plugin.trigger(
+            "aisdk.sdk",
+            { model: model("gitlab", "claude"), package: "gitlab-ai-provider", options: { name: "gitlab" } },
+            {},
+          )
+          expect(gitlabSDKOptions).toHaveLength(1)
+          expect(gitlabSDKOptions[0].instanceUrl).toBe("https://gitlab.com")
+          expect(gitlabSDKOptions[0].apiKey).toBe("env-token")
+          expect(gitlabSDKOptions[0].aiGatewayHeaders).toMatchObject({
+            "anthropic-beta": "context-1m-2025-08-07",
+          })
+          expect(String((gitlabSDKOptions[0].aiGatewayHeaders as Record<string, string>)["User-Agent"])).toContain(
+            "gitlab-ai-provider/test-version",
+          )
+          expect(gitlabSDKOptions[0].featureFlags).toEqual({
+            duo_agent_platform_agentic_chat: true,
+            duo_agent_platform: true,
+          })
+        }),
+    ),
+  )
+
+  it.effect("uses GITLAB_INSTANCE_URL when instanceUrl is not configured", () =>
+    withEnv(
+      {
+        GITLAB_INSTANCE_URL: "https://env.gitlab.example",
+        GITLAB_TOKEN: undefined,
+      },
+      () =>
+        Effect.gen(function* () {
+          gitlabSDKOptions.length = 0
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(GitLabPlugin)
+          yield* plugin.trigger(
+            "aisdk.sdk",
+            { model: model("gitlab", "claude"), package: "gitlab-ai-provider", options: { name: "gitlab" } },
+            {},
+          )
+          expect(gitlabSDKOptions[0].instanceUrl).toBe("https://env.gitlab.example")
+        }),
+    ),
+  )
+
+  it.effect("keeps configured instance URL, apiKey, aiGatewayHeaders, and featureFlags over env/defaults", () =>
+    withEnv(
+      {
+        GITLAB_INSTANCE_URL: "https://env.gitlab.example",
+        GITLAB_TOKEN: "env-token",
+      },
+      () =>
+        Effect.gen(function* () {
+          gitlabSDKOptions.length = 0
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(GitLabPlugin)
+          yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("gitlab", "claude"),
+              package: "gitlab-ai-provider",
+              options: {
+                name: "gitlab",
+                instanceUrl: "https://configured.gitlab.example",
+                apiKey: "configured-token",
+                aiGatewayHeaders: {
+                  "anthropic-beta": "configured-beta",
+                  "x-gitlab-test": "1",
+                },
+                featureFlags: {
+                  duo_agent_platform: false,
+                  custom_flag: true,
+                },
+              },
+            },
+            {},
+          )
+          expect(gitlabSDKOptions[0].instanceUrl).toBe("https://configured.gitlab.example")
+          expect(gitlabSDKOptions[0].apiKey).toBe("configured-token")
+          expect(gitlabSDKOptions[0].aiGatewayHeaders).toMatchObject({
+            "anthropic-beta": "configured-beta",
+            "x-gitlab-test": "1",
+          })
+          expect(gitlabSDKOptions[0].featureFlags).toEqual({
+            duo_agent_platform_agentic_chat: true,
+            duo_agent_platform: false,
+            custom_flag: true,
+          })
+        }),
+    ),
+  )
+
+  it.effect("ignores non-GitLab SDK packages", () =>
+    Effect.gen(function* () {
+      gitlabSDKOptions.length = 0
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GitLabPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("gitlab", "claude"), package: "@ai-sdk/openai", options: { name: "gitlab" } },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+      expect(gitlabSDKOptions).toHaveLength(0)
+    }),
+  )
+
+  itWithAccount.effect("uses active account API token over GITLAB_TOKEN", () =>
+    withEnv(
+      {
+        GITLAB_TOKEN: "env-token",
+      },
+      () =>
+        Effect.gen(function* () {
+          gitlabSDKOptions.length = 0
+          const plugin = yield* PluginV2.Service
+          const credentials = yield* Credential.Service
+          const catalog = yield* Catalog.Service
+          yield* credentials.create({
+            connectorID: Connector.ID.make("gitlab"),
+            methodID: Connector.MethodID.make("api-key"),
+            value: new Credential.Key({ type: "key", key: "account-token" }),
+          })
+          yield* plugin.add(GitLabPlugin)
+          const transform = yield* catalog.transform()
+          yield* transform((catalog) => catalog.provider.update(ProviderV2.ID.make("gitlab"), () => {}))
+          const provider = yield* catalog.provider.get(ProviderV2.ID.make("gitlab"))
+          yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("gitlab", "claude"),
+              package: "gitlab-ai-provider",
+              options: provider.request.body,
+            },
+            {},
+          )
+          expect(gitlabSDKOptions[0].apiKey).toBe("account-token")
+        }),
+    ),
+  )
+
+  itWithAccount.effect("uses active account OAuth access token when no API token exists", () =>
+    withEnv(
+      {
+        GITLAB_TOKEN: undefined,
+      },
+      () =>
+        Effect.gen(function* () {
+          gitlabSDKOptions.length = 0
+          const plugin = yield* PluginV2.Service
+          const credentials = yield* Credential.Service
+          const catalog = yield* Catalog.Service
+          yield* credentials.create({
+            connectorID: Connector.ID.make("gitlab"),
+            methodID: Connector.MethodID.make("oauth"),
+            value: new Credential.OAuth({
+              type: "oauth",
+              refresh: "refresh-token",
+              access: "account-oauth-token",
+              expires: 9999999999999,
+            }),
+          })
+          yield* plugin.add(GitLabPlugin)
+          const transform = yield* catalog.transform()
+          yield* transform((catalog) => catalog.provider.update(ProviderV2.ID.make("gitlab"), () => {}))
+          const provider = yield* catalog.provider.get(ProviderV2.ID.make("gitlab"))
+          yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("gitlab", "claude"),
+              package: "gitlab-ai-provider",
+              options: provider.request.body,
+            },
+            {},
+          )
+          expect(gitlabSDKOptions[0].apiKey).toBe("account-oauth-token")
+        }),
+    ),
+  )
+
+  it.effect("uses workflowChat for duo workflow models and preserves selectedModelRef", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: [string, unknown][] = []
+      yield* plugin.add(GitLabPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("gitlab", "duo-workflow-custom", {
+            request: {
+              headers: {},
+              body: { workflowRef: "ref", workflowDefinition: "definition" },
+            },
+          }),
+          sdk: {
+            workflowChat: (id: string, options: unknown) => {
+              calls.push([id, options])
+              return { id, options }
+            },
+            agenticChat: () => undefined,
+          },
+          options: { featureFlags: { configured: true } },
+        },
+        {},
+      )
+      expect(calls).toEqual([
+        ["duo-workflow", { featureFlags: { configured: true }, workflowDefinition: "definition" }],
+      ])
+      expect(result.language as unknown).toEqual({
+        id: "duo-workflow",
+        options: calls[0]?.[1],
+        selectedModelRef: "ref",
+      })
+    }),
+  )
+
+  it.effect("uses exact static workflow model ids when the provider recognizes them", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: [string, unknown][] = []
+      yield* plugin.add(GitLabPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("gitlab", "duo-workflow-exact"),
+          sdk: {
+            workflowChat: (id: string, options: unknown) => {
+              calls.push([id, options])
+              return { id, options }
+            },
+            agenticChat: () => undefined,
+          },
+          options: { featureFlags: { configured: true } },
+        },
+        {},
+      )
+      expect(calls).toEqual([
+        ["duo-workflow-exact", { featureFlags: { configured: true }, workflowDefinition: undefined }],
+      ])
+      expect(result.language as unknown).toEqual({ id: "duo-workflow-exact", options: calls[0]?.[1] })
+    }),
+  )
+
+  it.effect("uses provider feature flags instead of request feature flags", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: [string, unknown][] = []
+      yield* plugin.add(GitLabPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("gitlab", "duo-workflow-custom", {
+            request: {
+              headers: {},
+              body: { featureFlags: { request_flag: true } },
+            },
+          }),
+          sdk: {
+            workflowChat: (id: string, options: unknown) => {
+              calls.push([id, options])
+              return { id, options }
+            },
+            agenticChat: () => undefined,
+          },
+          options: { featureFlags: { configured: true } },
+        },
+        {},
+      )
+      expect(calls).toEqual([["duo-workflow", { featureFlags: { configured: true }, workflowDefinition: undefined }]])
+    }),
+  )
+
+  it.effect("uses agenticChat with provider aiGatewayHeaders and feature flags for normal models", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: [string, unknown][] = []
+      yield* plugin.add(GitLabPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("gitlab", "claude", {
+            request: { headers: { h: "v" }, body: {} },
+          }),
+          sdk: {
+            workflowChat: () => undefined,
+            agenticChat: (id: string, options: unknown) => {
+              const selected = options as {
+                aiGatewayHeaders?: Record<string, string>
+                featureFlags?: Record<string, boolean>
+              }
+              calls.push([
+                id,
+                { aiGatewayHeaders: { ...selected.aiGatewayHeaders }, featureFlags: { ...selected.featureFlags } },
+              ])
+            },
+          },
+          options: { aiGatewayHeaders: { fallback: "header" }, featureFlags: { duo_agent_platform: true } },
+        },
+        {},
+      )
+      expect(calls).toEqual([
+        ["claude", { aiGatewayHeaders: { fallback: "header" }, featureFlags: { duo_agent_platform: true } }],
+      ])
+    }),
+  )
+})

packages/core/test/plugin/provider-google-vertex-anthropic.test.ts

@@ -0,0 +1,215 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { GoogleVertexAnthropicPlugin, GoogleVertexPlugin } from "@opencode-ai/core/plugin/provider/google-vertex"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { fakeSelectorSdk, it, model, withEnv } from "./provider-helper"
+
+describe("GoogleVertexAnthropicPlugin", () => {
+  it.effect("resolves legacy project and location env on provider update", () =>
+    withEnv(
+      {
+        GOOGLE_CLOUD_PROJECT: "cloud-project",
+        GCP_PROJECT: "gcp-project",
+        GCLOUD_PROJECT: "gcloud-project",
+        GOOGLE_CLOUD_LOCATION: "cloud-location",
+        VERTEX_LOCATION: "vertex-location",
+        GOOGLE_VERTEX_LOCATION: "google-vertex-location",
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          const catalog = yield* Catalog.Service
+          yield* plugin.add(GoogleVertexAnthropicPlugin)
+          const transform = yield* catalog.transform()
+          yield* transform((catalog) =>
+            catalog.provider.update(ProviderV2.ID.make("google-vertex-anthropic"), (provider) => {
+              provider.api = { type: "aisdk", package: "@ai-sdk/google-vertex/anthropic" }
+            }),
+          )
+          const provider = yield* catalog.provider.get(ProviderV2.ID.make("google-vertex-anthropic"))
+          expect(provider.request.body.project).toBe("cloud-project")
+          expect(provider.request.body.location).toBe("cloud-location")
+        }),
+    ),
+  )
+
+  it.effect("keeps configured project and location over env fallback", () =>
+    withEnv({ GOOGLE_CLOUD_PROJECT: "env-project", GOOGLE_CLOUD_LOCATION: "env-location" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(GoogleVertexAnthropicPlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) =>
+          catalog.provider.update(ProviderV2.ID.make("google-vertex-anthropic"), (provider) => {
+            provider.api = { type: "aisdk", package: "@ai-sdk/google-vertex/anthropic" }
+            provider.request.body.project = "configured-project"
+            provider.request.body.location = "configured-location"
+          }),
+        )
+        const provider = yield* catalog.provider.get(ProviderV2.ID.make("google-vertex-anthropic"))
+        expect(provider.request.body.project).toBe("configured-project")
+        expect(provider.request.body.location).toBe("configured-location")
+      }),
+    ),
+  )
+
+  it.effect("creates SDKs from legacy env fallback and default location", () =>
+    withEnv(
+      {
+        GOOGLE_CLOUD_PROJECT: undefined,
+        GCP_PROJECT: "gcp-project",
+        GCLOUD_PROJECT: "gcloud-project",
+        GOOGLE_CLOUD_LOCATION: undefined,
+        VERTEX_LOCATION: undefined,
+        GOOGLE_VERTEX_LOCATION: "ignored-location",
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(GoogleVertexAnthropicPlugin)
+          const result = yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("google-vertex-anthropic", "claude-sonnet-4-5"),
+              package: "@ai-sdk/google-vertex/anthropic",
+              options: { name: "google-vertex-anthropic" },
+            },
+            {},
+          )
+          expect(result.sdk.languageModel("claude-sonnet-4-5").config.baseURL).toBe(
+            "https://aiplatform.googleapis.com/v1/projects/gcp-project/locations/global/publishers/anthropic/models",
+          )
+        }),
+    ),
+  )
+
+  it.effect("uses GOOGLE_CLOUD_LOCATION before VERTEX_LOCATION when creating SDKs", () =>
+    withEnv(
+      { GOOGLE_CLOUD_PROJECT: "project", GOOGLE_CLOUD_LOCATION: "cloud-location", VERTEX_LOCATION: "vertex-location" },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(GoogleVertexAnthropicPlugin)
+          const result = yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("google-vertex-anthropic", "claude-sonnet-4-5"),
+              package: "@ai-sdk/google-vertex/anthropic",
+              options: { name: "google-vertex-anthropic" },
+            },
+            {},
+          )
+          expect(result.sdk.languageModel("claude-sonnet-4-5").config.baseURL).toBe(
+            "https://cloud-location-aiplatform.googleapis.com/v1/projects/project/locations/cloud-location/publishers/anthropic/models",
+          )
+        }),
+    ),
+  )
+
+  it.effect("creates SDKs for google-vertex Anthropic models with multi-region endpoints", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GoogleVertexAnthropicPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("google-vertex", "claude-sonnet-4-5"),
+          package: "@ai-sdk/google-vertex/anthropic",
+          options: { name: "google-vertex", project: "project", location: "eu" },
+        },
+        {},
+      )
+      expect(result.sdk.languageModel("claude-sonnet-4-5").config.baseURL).toBe(
+        "https://aiplatform.eu.rep.googleapis.com/v1/projects/project/locations/eu/publishers/anthropic/models",
+      )
+    }),
+  )
+
+  it.effect("keeps configured baseURL for google-vertex Anthropic models", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GoogleVertexAnthropicPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("google-vertex", "claude-sonnet-4-5"),
+          package: "@ai-sdk/google-vertex/anthropic",
+          options: { name: "google-vertex", project: "project", location: "eu", baseURL: "https://proxy.example/v1" },
+        },
+        {},
+      )
+      expect(result.sdk.languageModel("claude-sonnet-4-5").config.baseURL).toBe("https://proxy.example/v1")
+    }),
+  )
+
+  it.effect("selects google-vertex Anthropic language models through V2 plugins", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GoogleVertexPlugin)
+      yield* plugin.add(GoogleVertexAnthropicPlugin)
+      const sdkResult = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("google-vertex", " claude-sonnet-4-5 "),
+          package: "@ai-sdk/google-vertex/anthropic",
+          options: { name: "google-vertex", project: "project", location: "us" },
+        },
+        {},
+      )
+      const languageResult = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("google-vertex", " claude-sonnet-4-5 "),
+          sdk: sdkResult.sdk,
+          options: {},
+        },
+        {},
+      )
+      const language = languageResult.language as unknown as { config: { baseURL: string }; modelId: string }
+      expect(language.config.baseURL).toBe(
+        "https://aiplatform.us.rep.googleapis.com/v1/projects/project/locations/us/publishers/anthropic/models",
+      )
+      expect(language.modelId).toBe("claude-sonnet-4-5")
+    }),
+  )
+
+  it.effect("trims model IDs before selecting language models", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(GoogleVertexAnthropicPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("google-vertex-anthropic", " claude-sonnet-4-5 "),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual(["languageModel:claude-sonnet-4-5"])
+    }),
+  )
+
+  it.effect("ignores non Vertex Anthropic providers for language selection", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(GoogleVertexAnthropicPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("google-vertex", "claude-sonnet-4-5"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual([])
+      expect(result.language).toBeUndefined()
+    }),
+  )
+})

packages/core/test/plugin/provider-google-vertex.test.ts

@@ -0,0 +1,344 @@
+import { describe, expect, mock } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { GoogleVertexPlugin } from "@opencode-ai/core/plugin/provider/google-vertex"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { fakeSelectorSdk, it, model, withEnv } from "./provider-helper"
+
+const vertexOptions: Record<string, any>[] = []
+const googleAuthOptions: Record<string, any>[] = []
+
+void mock.module("@ai-sdk/google-vertex", () => ({
+  createVertex: (options: Record<string, any>) => {
+    vertexOptions.push(options)
+    return {
+      languageModel: (modelID: string) => ({ modelID, provider: "google-vertex", specificationVersion: "v3" }),
+    }
+  },
+}))
+
+void mock.module("google-auth-library", () => ({
+  GoogleAuth: class {
+    constructor(options: Record<string, any>) {
+      googleAuthOptions.push(options)
+    }
+
+    async getClient() {
+      return {
+        async getAccessToken() {
+          return { token: "vertex-token" }
+        },
+      }
+    }
+  },
+}))
+
+describe("GoogleVertexPlugin", () => {
+  it.effect("ignores OpenAI-compatible providers that are not Google Vertex", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(GoogleVertexPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) =>
+        catalog.provider.update(ProviderV2.ID.opencode, (provider) => {
+          provider.api = {
+            type: "aisdk",
+            package: "@ai-sdk/openai-compatible",
+            url: "https://opencode.ai/zen/v1",
+          }
+        }),
+      )
+
+      const provider = yield* catalog.provider.get(ProviderV2.ID.opencode)
+      expect(provider.request.body).toEqual({})
+    }),
+  )
+
+  it.effect("resolves project and location from env using legacy precedence", () =>
+    withEnv(
+      {
+        GOOGLE_CLOUD_PROJECT: "google-cloud-project",
+        GCP_PROJECT: "gcp-project",
+        GCLOUD_PROJECT: "gcloud-project",
+        GOOGLE_VERTEX_LOCATION: "google-vertex-location",
+        GOOGLE_CLOUD_LOCATION: "google-cloud-location",
+        VERTEX_LOCATION: "vertex-location",
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          const catalog = yield* Catalog.Service
+          yield* plugin.add(GoogleVertexPlugin)
+          const transform = yield* catalog.transform()
+          yield* transform((catalog) =>
+            catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
+              provider.api = {
+                type: "aisdk",
+                package: "@ai-sdk/openai-compatible",
+                url: "https://${GOOGLE_VERTEX_ENDPOINT}/v1/projects/${GOOGLE_VERTEX_PROJECT}/locations/${GOOGLE_VERTEX_LOCATION}",
+              }
+            }),
+          )
+          const provider = yield* catalog.provider.get(ProviderV2.ID.make("google-vertex"))
+          expect(provider.request.body.project).toBe("google-cloud-project")
+          expect(provider.request.body.location).toBe("google-vertex-location")
+          expect(provider.api).toEqual({
+            type: "aisdk",
+            package: "@ai-sdk/openai-compatible",
+            url: "https://google-vertex-location-aiplatform.googleapis.com/v1/projects/google-cloud-project/locations/google-vertex-location",
+          })
+        }),
+    ),
+  )
+
+  it.effect("resolves the advertised GOOGLE_VERTEX_PROJECT env for provider updates and SDKs", () =>
+    withEnv(
+      {
+        GOOGLE_VERTEX_PROJECT: "vertex-project",
+        GOOGLE_CLOUD_PROJECT: undefined,
+        GCP_PROJECT: undefined,
+        GCLOUD_PROJECT: undefined,
+        GOOGLE_VERTEX_LOCATION: "europe-west4",
+        GOOGLE_CLOUD_LOCATION: undefined,
+        VERTEX_LOCATION: undefined,
+      },
+      () =>
+        Effect.gen(function* () {
+          vertexOptions.length = 0
+          const plugin = yield* PluginV2.Service
+          const catalog = yield* Catalog.Service
+          yield* plugin.add(GoogleVertexPlugin)
+          const transform = yield* catalog.transform()
+          yield* transform((catalog) =>
+            catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
+              provider.api = {
+                type: "aisdk",
+                package: "@ai-sdk/openai-compatible",
+                url: "https://${GOOGLE_VERTEX_ENDPOINT}/v1/projects/${GOOGLE_VERTEX_PROJECT}/locations/${GOOGLE_VERTEX_LOCATION}",
+              }
+            }),
+          )
+          const provider = yield* catalog.provider.get(ProviderV2.ID.make("google-vertex"))
+          yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("google-vertex", "gemini", {
+                api: { type: "aisdk", package: "@ai-sdk/google-vertex" },
+              }),
+              package: "@ai-sdk/google-vertex",
+              options: { name: "google-vertex" },
+            },
+            {},
+          )
+
+          expect(provider.request.body.project).toBe("vertex-project")
+          expect(provider.api).toEqual({
+            type: "aisdk",
+            package: "@ai-sdk/openai-compatible",
+            url: "https://europe-west4-aiplatform.googleapis.com/v1/projects/vertex-project/locations/europe-west4",
+          })
+          expect(vertexOptions[0].project).toBe("vertex-project")
+          expect(vertexOptions[0].location).toBe("europe-west4")
+        }),
+    ),
+  )
+
+  it.effect("keeps configured project and location over env and uses global endpoint", () =>
+    withEnv(
+      {
+        GOOGLE_CLOUD_PROJECT: "env-project",
+        GCP_PROJECT: "env-gcp-project",
+        GCLOUD_PROJECT: "env-gcloud-project",
+        GOOGLE_VERTEX_LOCATION: "env-location",
+        GOOGLE_CLOUD_LOCATION: "env-google-cloud-location",
+        VERTEX_LOCATION: "env-vertex-location",
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          const catalog = yield* Catalog.Service
+          yield* plugin.add(GoogleVertexPlugin)
+          const transform = yield* catalog.transform()
+          yield* transform((catalog) =>
+            catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
+              provider.api = {
+                type: "aisdk",
+                package: "@ai-sdk/openai-compatible",
+                url: "https://${GOOGLE_VERTEX_ENDPOINT}/v1/projects/${GOOGLE_VERTEX_PROJECT}/locations/${GOOGLE_VERTEX_LOCATION}",
+              }
+              provider.request.body.project = "config-project"
+              provider.request.body.location = "global"
+            }),
+          )
+          const provider = yield* catalog.provider.get(ProviderV2.ID.make("google-vertex"))
+          expect(provider.request.body.project).toBe("config-project")
+          expect(provider.request.body.location).toBe("global")
+          expect(provider.api).toEqual({
+            type: "aisdk",
+            package: "@ai-sdk/openai-compatible",
+            url: "https://aiplatform.googleapis.com/v1/projects/config-project/locations/global",
+          })
+        }),
+    ),
+  )
+
+  it.effect("keeps OpenAI-compatible Vertex endpoint templates regional for eu", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(GoogleVertexPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) =>
+        catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
+          provider.api = {
+            type: "aisdk",
+            package: "@ai-sdk/openai-compatible",
+            url: "https://${GOOGLE_VERTEX_ENDPOINT}/v1/projects/${GOOGLE_VERTEX_PROJECT}/locations/${GOOGLE_VERTEX_LOCATION}",
+          }
+          provider.request.body.project = "config-project"
+          provider.request.body.location = "eu"
+        }),
+      )
+      const provider = yield* catalog.provider.get(ProviderV2.ID.make("google-vertex"))
+      expect(provider.api).toEqual({
+        type: "aisdk",
+        package: "@ai-sdk/openai-compatible",
+        url: "https://eu-aiplatform.googleapis.com/v1/projects/config-project/locations/eu",
+      })
+    }),
+  )
+
+  it.effect("defaults location to us-central1 when only project is configured", () =>
+    withEnv(
+      {
+        GOOGLE_CLOUD_PROJECT: undefined,
+        GCP_PROJECT: undefined,
+        GCLOUD_PROJECT: undefined,
+        GOOGLE_VERTEX_LOCATION: undefined,
+        GOOGLE_CLOUD_LOCATION: undefined,
+        VERTEX_LOCATION: undefined,
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          const catalog = yield* Catalog.Service
+          yield* plugin.add(GoogleVertexPlugin)
+          const transform = yield* catalog.transform()
+          yield* transform((catalog) =>
+            catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
+              provider.api = { type: "aisdk", package: "@ai-sdk/google-vertex" }
+              provider.request.body.project = "config-project"
+            }),
+          )
+          const provider = yield* catalog.provider.get(ProviderV2.ID.make("google-vertex"))
+          expect(provider.request.body.project).toBe("config-project")
+          expect(provider.request.body.location).toBe("us-central1")
+        }),
+    ),
+  )
+
+  it.effect("does not pass Google auth fetch to the native Vertex SDK", () =>
+    withEnv(
+      {
+        GOOGLE_CLOUD_PROJECT: "env-project",
+        GOOGLE_VERTEX_LOCATION: "env-location",
+      },
+      () =>
+        Effect.gen(function* () {
+          vertexOptions.length = 0
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(GoogleVertexPlugin)
+          yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("google-vertex", "gemini", {
+                api: { type: "aisdk", package: "@ai-sdk/google-vertex" },
+              }),
+              package: "@ai-sdk/google-vertex",
+              options: { name: "google-vertex" },
+            },
+            {},
+          )
+          expect(vertexOptions).toHaveLength(1)
+          expect(vertexOptions[0].project).toBe("env-project")
+          expect(vertexOptions[0].location).toBe("env-location")
+          expect(vertexOptions[0].fetch).toBeUndefined()
+        }),
+    ),
+  )
+
+  it.effect("keeps Google auth fetch for OpenAI-compatible Vertex endpoints", () =>
+    Effect.gen(function* () {
+      googleAuthOptions.length = 0
+      const fetchCalls: { input: Parameters<typeof fetch>[0]; init?: RequestInit }[] = []
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GoogleVertexPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("capture-openai-compatible"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.promise(async () => {
+              if (evt.model.providerID !== "google-vertex") return
+              if (evt.package !== "@ai-sdk/openai-compatible") return
+              expect(typeof evt.options.fetch).toBe("function")
+              await evt.options.fetch("https://vertex.example", {
+                headers: { "x-test": "1" },
+              })
+            }),
+        }),
+      })
+      const originalFetch = fetch
+      ;(globalThis as typeof globalThis & { fetch: typeof fetch }).fetch = (async (
+        input: Parameters<typeof fetch>[0],
+        init?: RequestInit,
+      ) => {
+        fetchCalls.push({ input, init })
+        return new Response("ok")
+      }) as typeof fetch
+      yield* Effect.acquireUseRelease(
+        Effect.void,
+        () =>
+          plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("google-vertex", "gemini", {
+                api: { type: "aisdk", package: "@ai-sdk/openai-compatible" },
+              }),
+              package: "@ai-sdk/openai-compatible",
+              options: { name: "google-vertex" },
+            },
+            {},
+          ),
+        () =>
+          Effect.sync(() => {
+            ;(globalThis as typeof globalThis & { fetch: typeof fetch }).fetch = originalFetch
+          }),
+      )
+      expect(fetchCalls).toHaveLength(1)
+      expect(googleAuthOptions).toEqual([{ scopes: ["https://www.googleapis.com/auth/cloud-platform"] }])
+      expect(fetchCalls[0].input).toBe("https://vertex.example")
+      expect(new Headers(fetchCalls[0].init?.headers).get("authorization")).toBe("Bearer vertex-token")
+      expect(new Headers(fetchCalls[0].init?.headers).get("x-test")).toBe("1")
+    }),
+  )
+
+  it.effect("trims model IDs before selecting language models", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(GoogleVertexPlugin)
+      yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("google-vertex", " gemini-2.5-pro "),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual(["languageModel:gemini-2.5-pro"])
+    }),
+  )
+})

packages/core/test/plugin/provider-google.test.ts

@@ -0,0 +1,69 @@
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { AISDK } from "@opencode-ai/core/aisdk"
+import { EventV2 } from "@opencode-ai/core/event"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { GooglePlugin } from "@opencode-ai/core/plugin/provider/google"
+import { testEffect } from "../lib/effect"
+import { it, model } from "./provider-helper"
+
+const itWithAISDK = testEffect(
+  AISDK.layer.pipe(Layer.provideMerge(PluginV2.locationLayer.pipe(Layer.provide(EventV2.defaultLayer)))),
+)
+
+describe("GooglePlugin", () => {
+  it.effect("creates a Google Generative AI SDK for @ai-sdk/google using the provider ID as SDK name", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GooglePlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-google", "gemini"),
+          package: "@ai-sdk/google",
+          options: { name: "custom-google", apiKey: "test" },
+        },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+      expect(result.sdk?.languageModel("gemini").provider).toBe("custom-google")
+    }),
+  )
+
+  it.effect("ignores non-Google SDK packages", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GooglePlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("google", "gemini"), package: "@ai-sdk/google-vertex", options: { name: "google" } },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  itWithAISDK.effect("uses default languageModel loading with provider ID parity", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const aisdk = yield* AISDK.Service
+      yield* plugin.add(GooglePlugin)
+      const language = yield* aisdk.language(
+        model("custom-google", "alias", {
+          api: {
+            id: ModelV2.ID.make("gemini-api"),
+            type: "aisdk",
+            package: "@ai-sdk/google",
+          },
+          request: {
+            headers: {},
+            body: { apiKey: "test" },
+          },
+        }),
+      )
+      expect(language.modelId).toBe("gemini-api")
+      expect(language.provider).toBe("custom-google")
+    }),
+  )
+})

packages/core/test/plugin/provider-groq.test.ts

@@ -0,0 +1,100 @@
+import { describe, expect } from "bun:test"
+import { createGroq } from "@ai-sdk/groq"
+import { Effect, Layer } from "effect"
+import { AISDK } from "@opencode-ai/core/aisdk"
+import { EventV2 } from "@opencode-ai/core/event"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { GroqPlugin } from "@opencode-ai/core/plugin/provider/groq"
+import { it, model } from "./provider-helper"
+import { testEffect } from "../lib/effect"
+
+const aisdkIt = testEffect(
+  AISDK.layer.pipe(Layer.provideMerge(PluginV2.locationLayer.pipe(Layer.provide(EventV2.defaultLayer)))),
+)
+
+describe("GroqPlugin", () => {
+  it.effect("creates a Groq SDK for @ai-sdk/groq", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GroqPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("groq", "llama"), package: "@ai-sdk/groq", options: { name: "groq" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("ignores non-Groq SDK packages", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GroqPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("groq", "llama"), package: "@ai-sdk/openai-compatible", options: { name: "groq" } },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("only matches the bundled @ai-sdk/groq package exactly", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GroqPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("groq", "llama"), package: "@ai-sdk/groq/compat", options: { name: "groq" } },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("matches the old bundled Groq SDK provider naming", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(GroqPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-groq", "llama"),
+          package: "@ai-sdk/groq",
+          options: { name: "custom-groq", apiKey: "test" },
+        },
+        {},
+      )
+      const expected = createGroq({ name: "custom-groq", apiKey: "test" } as Parameters<typeof createGroq>[0] & {
+        name: string
+      }).languageModel("llama")
+      const actual = result.sdk?.languageModel("llama")
+      expect(actual?.provider).toBe(expected.provider)
+      expect(actual?.modelId).toBe(expected.modelId)
+    }),
+  )
+
+  aisdkIt.effect("uses the default languageModel(api.id) behavior", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const aisdk = yield* AISDK.Service
+      yield* plugin.add(GroqPlugin)
+      const result = yield* aisdk.language(
+        model("groq", "alias", {
+          api: {
+            id: ModelV2.ID.make("llama-api"),
+            type: "aisdk",
+            package: "@ai-sdk/groq",
+          },
+          request: {
+            headers: {},
+            body: { apiKey: "test" },
+          },
+        }),
+      )
+      expect(result.modelId).toBe("llama-api")
+      expect(result.provider).toBe("groq.chat")
+    }),
+  )
+})

packages/core/test/plugin/provider-helper.ts

@@ -0,0 +1,149 @@
+import { Npm } from "@opencode-ai/core/npm"
+import type { LanguageModelV3 } from "@ai-sdk/provider"
+import { expect } from "bun:test"
+import { Effect, Layer, Option } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { Connector } from "@opencode-ai/core/connector"
+import { Credential } from "@opencode-ai/core/credential"
+import { EventV2 } from "@opencode-ai/core/event"
+import { Location } from "@opencode-ai/core/location"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { AbsolutePath } from "@opencode-ai/core/schema"
+import { location } from "../fixture/location"
+import { testEffect } from "../lib/effect"
+
+export const fixtureProvider = new URL("./fixtures/provider-factory.ts", import.meta.url).href
+const locationLayer = Layer.succeed(
+  Location.Service,
+  Location.Service.of(location({ directory: AbsolutePath.make("test") })),
+)
+
+export const npmLayer = Layer.succeed(
+  Npm.Service,
+  Npm.Service.of({
+    add: () => Effect.succeed({ directory: "", entrypoint: Option.none<string>() }),
+    install: () => Effect.void,
+    which: () => Effect.succeed(Option.none<string>()),
+  }),
+)
+
+export const catalogLayer = Layer.succeed(
+  Catalog.Service,
+  Catalog.Service.of({
+    transform: () => Effect.die("unexpected catalog.transform"),
+    provider: {
+      get: () => Effect.die("unexpected provider.get"),
+      all: () => Effect.succeed([]),
+      available: () => Effect.succeed([]),
+    },
+    model: {
+      get: () => Effect.die("unexpected model.get"),
+      all: () => Effect.succeed([]),
+      available: () => Effect.succeed([]),
+      default: () => Effect.succeed(Option.none<ModelV2.Info>()),
+      small: () => Effect.succeed(Option.none<ModelV2.Info>()),
+    },
+  }),
+)
+
+const connectors = Connector.locationLayer.pipe(
+  Layer.provide(EventV2.defaultLayer),
+  Layer.provide(Layer.mock(Credential.Service)({ create: () => Effect.die("unexpected credential creation") })),
+)
+
+export const it = testEffect(
+  Catalog.locationLayer.pipe(
+    Layer.provideMerge(connectors),
+    Layer.provideMerge(Layer.mock(Credential.Service)({ activeAll: () => Effect.succeed(new Map()) })),
+    Layer.provideMerge(EventV2.defaultLayer),
+    Layer.provideMerge(locationLayer),
+    Layer.provideMerge(npmLayer),
+  ),
+)
+
+type ProviderInput = Partial<Omit<ProviderV2.Info, "api" | "request">> & {
+  api?: ProviderV2.Api
+  request?: ProviderV2.Request
+}
+
+type ModelInput = Partial<Omit<ModelV2.Info, "api" | "request">> & {
+  api?: (ProviderV2.Api & { id?: ModelV2.ID }) | { id: ModelV2.ID }
+  request?: ModelV2.Info["request"]
+}
+
+export function provider(providerID: string, options?: ProviderInput) {
+  return new ProviderV2.Info({
+    ...ProviderV2.Info.empty(ProviderV2.ID.make(providerID)),
+    api: options?.api ?? {
+      type: "aisdk",
+      package: "test-provider",
+    },
+    ...options,
+    request: {
+      headers: {},
+      body: {},
+      ...options?.request,
+    },
+  })
+}
+
+export function model(providerID: string, modelID: string, options?: ModelInput) {
+  return new ModelV2.Info({
+    ...ModelV2.Info.empty(ProviderV2.ID.make(providerID), ModelV2.ID.make(modelID)),
+    ...options,
+    api:
+      options?.api && "type" in options.api
+        ? { id: ModelV2.ID.make(modelID), ...options.api }
+        : {
+            id: ModelV2.ID.make(modelID),
+            ...options?.api,
+            type: "aisdk",
+            package: "test-provider",
+          },
+    request: {
+      headers: {},
+      body: {},
+      ...options?.request,
+    },
+  })
+}
+
+export function withEnv<A, E, R>(vars: Record<string, string | undefined>, fx: () => Effect.Effect<A, E, R>) {
+  return Effect.acquireUseRelease(
+    Effect.sync(() => {
+      const previous = Object.fromEntries(Object.keys(vars).map((key) => [key, process.env[key]]))
+      for (const [key, value] of Object.entries(vars)) {
+        if (value === undefined) delete process.env[key]
+        else process.env[key] = value
+      }
+      return previous
+    }),
+    () => fx(),
+    (previous) =>
+      Effect.sync(() => {
+        for (const [key, value] of Object.entries(previous)) {
+          if (value === undefined) delete process.env[key]
+          else process.env[key] = value
+        }
+      }),
+  )
+}
+
+export function fakeSelectorSdk(calls: string[]) {
+  const make = (method: string) => (id: string) => {
+    calls.push(`${method}:${id}`)
+    return { modelId: id, provider: method, specificationVersion: "v3" } as unknown as LanguageModelV3
+  }
+  return {
+    responses: make("responses"),
+    messages: make("messages"),
+    chat: make("chat"),
+    languageModel: make("languageModel"),
+  }
+}
+
+export function expectPluginRegistered(ids: string[], id: string) {
+  expect(ids).toContain(PluginV2.ID.make(id))
+}

packages/core/test/plugin/provider-kilo.test.ts

@@ -0,0 +1,100 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { ProviderPlugins } from "@opencode-ai/core/plugin/provider"
+import { KiloPlugin } from "@opencode-ai/core/plugin/provider/kilo"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { expectPluginRegistered, it, provider } from "./provider-helper"
+
+describe("KiloPlugin", () => {
+  it.effect("is registered so legacy referer headers can be applied", () =>
+    Effect.sync(() =>
+      expectPluginRegistered(
+        ProviderPlugins.map((item) => item.id),
+        "kilo",
+      ),
+    ),
+  )
+
+  it.effect("applies legacy referer headers only to kilo", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(KiloPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const kilo = provider("kilo", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://api.kilo.ai/api/gateway" },
+          request: { headers: { Existing: "value" }, body: {} },
+        })
+        catalog.provider.update(kilo.id, (draft) => {
+          draft.api = kilo.api
+          draft.request = kilo.request
+        })
+        catalog.provider.update(provider("openrouter").id, () => {})
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("kilo"))).request.headers).toEqual({
+        Existing: "value",
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.openrouter)).request.headers).toEqual({})
+    }),
+  )
+
+  it.effect("uses the exact legacy Kilo header casing and set", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(KiloPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("kilo", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://api.kilo.ai/api/gateway" },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+        })
+      })
+
+      const result = yield* catalog.provider.get(ProviderV2.ID.make("kilo"))
+      expect(result.request.headers).toEqual({
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+      })
+      expect(result.request.headers).not.toHaveProperty("http-referer")
+      expect(result.request.headers).not.toHaveProperty("x-title")
+      expect(result.request.headers).not.toHaveProperty("X-Source")
+    }),
+  )
+
+  it.effect("uses the legacy provider-id guard instead of endpoint package matching", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(KiloPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const kilo = provider("kilo", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://api.kilo.ai/api/gateway" },
+        })
+        catalog.provider.update(kilo.id, (draft) => {
+          draft.api = kilo.api
+        })
+        const custom = provider("custom-kilo", {
+          api: { type: "aisdk", package: "kilo" },
+        })
+        catalog.provider.update(custom.id, (draft) => {
+          draft.api = custom.api
+        })
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("kilo"))).request.headers).toEqual({
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("custom-kilo"))).request.headers).toEqual({})
+    }),
+  )
+})

packages/core/test/plugin/provider-llmgateway.test.ts

@@ -0,0 +1,73 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { ProviderPlugins } from "@opencode-ai/core/plugin/provider"
+import { LLMGatewayPlugin } from "@opencode-ai/core/plugin/provider/llmgateway"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { expectPluginRegistered, it, provider } from "./provider-helper"
+
+describe("LLMGatewayPlugin", () => {
+  it.effect("is registered so legacy referer headers can be applied", () =>
+    Effect.sync(() =>
+      expectPluginRegistered(
+        ProviderPlugins.map((item) => item.id),
+        "llmgateway",
+      ),
+    ),
+  )
+
+  it.effect("applies legacy referer headers only to enabled llmgateway", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(LLMGatewayPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const llmgateway = provider("llmgateway", {
+          enabled: { via: "env", name: "LLMGATEWAY_API_KEY" },
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://api.llmgateway.io/v1" },
+          request: { headers: { Existing: "value" }, body: {} },
+        })
+        catalog.provider.update(llmgateway.id, (draft) => {
+          draft.enabled = llmgateway.enabled
+          draft.api = llmgateway.api
+          draft.request = llmgateway.request
+        })
+        const openrouter = provider("openrouter", {
+          enabled: { via: "env", name: "OPENROUTER_API_KEY" },
+        })
+        catalog.provider.update(openrouter.id, (draft) => {
+          draft.enabled = openrouter.enabled
+        })
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("llmgateway"))).request.headers).toEqual({
+        Existing: "value",
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+        "X-Source": "opencode",
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.openrouter)).request.headers).toEqual({})
+    }),
+  )
+
+  it.effect("does not apply legacy headers to a disabled llmgateway provider", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(LLMGatewayPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("llmgateway", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://api.llmgateway.io/v1" },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+        })
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("llmgateway"))).enabled).toBe(false)
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("llmgateway"))).request.headers).toEqual({})
+    }),
+  )
+})

packages/core/test/plugin/provider-mistral.test.ts

@@ -0,0 +1,106 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { MistralPlugin } from "@opencode-ai/core/plugin/provider/mistral"
+import { fakeSelectorSdk, it, model } from "./provider-helper"
+
+describe("MistralPlugin", () => {
+  it.effect("creates a Mistral SDK for @ai-sdk/mistral", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(MistralPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("mistral", "mistral-large"), package: "@ai-sdk/mistral", options: { name: "mistral" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("ignores non-Mistral SDK packages", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(MistralPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("mistral", "mistral-large"),
+          package: "@ai-sdk/openai-compatible",
+          options: { name: "mistral" },
+        },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("matches the old bundled Mistral SDK provider name for the bundled provider ID", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const providers: string[] = []
+      yield* plugin.add(MistralPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("mistral-sdk-inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              providers.push(evt.sdk.languageModel("mistral-large").provider)
+            }),
+        }),
+      })
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("mistral", "mistral-large"), package: "@ai-sdk/mistral", options: { name: "mistral" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+      expect(providers).toEqual(["mistral.chat"])
+    }),
+  )
+
+  it.effect("matches the old bundled Mistral SDK provider name for custom provider IDs", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const providers: string[] = []
+      yield* plugin.add(MistralPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("mistral-sdk-inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              providers.push(evt.sdk.languageModel("mistral-large").provider)
+            }),
+        }),
+      })
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-mistral", "mistral-large"),
+          package: "@ai-sdk/mistral",
+          options: { name: "custom-mistral" },
+        },
+        {},
+      )
+      expect(providers).toEqual(["mistral.chat"])
+    }),
+  )
+
+  it.effect("leaves Mistral language selection on the default sdk.languageModel(api.id) path", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      const sdk = fakeSelectorSdk(calls)
+      yield* plugin.add(MistralPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("mistral", "alias", { api: { id: ModelV2.ID.make("mistral-large") } }), sdk, options: {} },
+        {},
+      )
+      const language = result.language ?? sdk.languageModel(result.model.api.id)
+      expect(calls).toEqual(["languageModel:mistral-large"])
+      expect(language).toBeDefined()
+    }),
+  )
+})

packages/core/test/plugin/provider-nvidia.test.ts

@@ -0,0 +1,99 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { ProviderPlugins } from "@opencode-ai/core/plugin/provider"
+import { NvidiaPlugin } from "@opencode-ai/core/plugin/provider/nvidia"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { expectPluginRegistered, it, provider } from "./provider-helper"
+
+describe("NvidiaPlugin", () => {
+  it.effect("is registered so legacy referer headers can be applied", () =>
+    Effect.sync(() =>
+      expectPluginRegistered(
+        ProviderPlugins.map((item) => item.id),
+        "nvidia",
+      ),
+    ),
+  )
+
+  it.effect("applies NVIDIA tracking headers only to nvidia", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(NvidiaPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const nvidia = provider("nvidia", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://integrate.api.nvidia.com/v1" },
+          request: { headers: { Existing: "value" }, body: {} },
+        })
+        catalog.provider.update(nvidia.id, (draft) => {
+          draft.api = nvidia.api
+          draft.request = nvidia.request
+        })
+        catalog.provider.update(provider("openrouter").id, () => {})
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("nvidia"))).request.headers).toEqual({
+        Existing: "value",
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+        "X-BILLING-INVOKE-ORIGIN": "OpenCode",
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.openrouter)).request.headers).toEqual({})
+    }),
+  )
+
+  it.effect("adds billing origin for custom NVIDIA endpoints", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(NvidiaPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("nvidia", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://integrate.api.nvidia.com/v1" },
+          request: { headers: {}, body: {} },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+          draft.request = item.request
+        })
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("nvidia"))).request.headers).toEqual({
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+        "X-BILLING-INVOKE-ORIGIN": "OpenCode",
+      })
+    }),
+  )
+
+  it.effect("preserves an explicit NVIDIA billing origin header", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(NvidiaPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("nvidia", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://integrate.api.nvidia.com/v1" },
+          request: {
+            headers: { "X-BILLING-INVOKE-ORIGIN": "CustomOrigin" },
+            body: { baseURL: "https://integrate.api.nvidia.com/v1" },
+          },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+          draft.request = item.request
+        })
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("nvidia"))).request.headers).toEqual({
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+        "X-BILLING-INVOKE-ORIGIN": "CustomOrigin",
+      })
+    }),
+  )
+})

packages/core/test/plugin/provider-openai-compatible.test.ts

@@ -0,0 +1,101 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { OpenAICompatiblePlugin } from "@opencode-ai/core/plugin/provider/openai-compatible"
+import { it, model } from "./provider-helper"
+
+describe("OpenAICompatiblePlugin", () => {
+  it.effect("preserves explicit includeUsage false and defaults it to true", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(OpenAICompatiblePlugin)
+      const defaulted = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("custom", "model"), package: "@ai-sdk/openai-compatible", options: { name: "custom" } },
+        {},
+      )
+      const disabled = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom", "model"),
+          package: "@ai-sdk/openai-compatible",
+          options: { name: "custom", includeUsage: false },
+        },
+        {},
+      )
+      expect(defaulted.options.includeUsage).toBe(true)
+      expect(disabled.options.includeUsage).toBe(false)
+    }),
+  )
+
+  it.effect("defaults includeUsage for OpenAI-compatible package matches", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(OpenAICompatiblePlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom", "model"),
+          package: "file:///tmp/@ai-sdk/openai-compatible-provider.js",
+          options: { name: "custom" },
+        },
+        {},
+      )
+      expect(result.options.includeUsage).toBe(true)
+    }),
+  )
+
+  it.effect("uses the provider ID as the OpenAI-compatible provider name", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const observed: string[] = []
+      yield* plugin.add(OpenAICompatiblePlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              observed.push(evt.sdk.languageModel("model").provider)
+            }),
+        }),
+      })
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-provider", "model"),
+          package: "@ai-sdk/openai-compatible",
+          options: { name: "custom-provider", baseURL: "https://example.com/v1" },
+        },
+        {},
+      )
+      expect(observed).toEqual(["custom-provider.chat"])
+    }),
+  )
+
+  it.effect("does not overwrite an SDK created by an earlier provider-specific plugin", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const sentinel = { languageModel: (modelID: string) => ({ modelID }) }
+      yield* plugin.add({
+        id: PluginV2.ID.make("sentinel"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              evt.sdk = sentinel
+            }),
+        }),
+      })
+      yield* plugin.add(OpenAICompatiblePlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("cloudflare-workers-ai", "model"),
+          package: "@ai-sdk/openai-compatible",
+          options: { name: "cloudflare-workers-ai" },
+        },
+        {},
+      )
+      expect(result.sdk).toBe(sentinel)
+    }),
+  )
+})

packages/core/test/plugin/provider-openai.test.ts

@@ -0,0 +1,139 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { Connector } from "@opencode-ai/core/connector"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { OpenAIPlugin } from "@opencode-ai/core/plugin/provider/openai"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { fakeSelectorSdk, it, model, provider } from "./provider-helper"
+
+function add(plugin: PluginV2.Interface, connectors: Connector.Interface) {
+  return plugin.add({
+    ...OpenAIPlugin,
+    effect: OpenAIPlugin.effect.pipe(Effect.provideService(Connector.Service, connectors)),
+  })
+}
+
+describe("OpenAIPlugin", () => {
+  it.effect("registers browser and headless ChatGPT OAuth methods", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* add(plugin, yield* Connector.Service)
+      expect((yield* (yield* Connector.Service).get(Connector.ID.make("openai")))?.methods).toEqual([
+        new Connector.OAuthMethod({
+          id: Connector.MethodID.make("chatgpt-browser"),
+          type: "oauth",
+          label: "ChatGPT Pro/Plus (browser)",
+        }),
+        new Connector.OAuthMethod({
+          id: Connector.MethodID.make("chatgpt-headless"),
+          type: "oauth",
+          label: "ChatGPT Pro/Plus (headless)",
+        }),
+      ])
+    }),
+  )
+
+  it.effect("creates an OpenAI SDK for @ai-sdk/openai using the provider ID as SDK name", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* add(plugin, yield* Connector.Service)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-openai", "gpt-5"),
+          package: "@ai-sdk/openai",
+          options: { name: "custom-openai", apiKey: "test" },
+        },
+        {},
+      )
+      expect(result.sdk?.responses("gpt-5").provider).toBe("custom-openai.responses")
+    }),
+  )
+
+  it.effect("ignores non-OpenAI SDK packages", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* add(plugin, yield* Connector.Service)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("openai", "gpt-5"), package: "@ai-sdk/openai-compatible", options: { name: "openai" } },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("uses the Responses API for language models", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* add(plugin, yield* Connector.Service)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("openai", "alias", {
+            api: { id: ModelV2.ID.make("gpt-5"), type: "aisdk", package: "test-provider" },
+          }),
+          sdk: fakeSelectorSdk(calls),
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual(["responses:gpt-5"])
+      expect(result.language).toBeDefined()
+    }),
+  )
+
+  it.effect("ignores non-OpenAI providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* add(plugin, yield* Connector.Service)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("anthropic", "gpt-5"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      expect(calls).toEqual([])
+      expect(result.language).toBeUndefined()
+    }),
+  )
+
+  it.effect("disables gpt-5-chat-latest during catalog transforms", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* add(plugin, yield* Connector.Service)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("openai", { api: { type: "aisdk", package: "@ai-sdk/openai" } })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+        })
+        catalog.model.update(item.id, ModelV2.ID.make("gpt-5"), () => {})
+        catalog.model.update(item.id, ModelV2.ID.make("gpt-5-chat-latest"), () => {})
+      })
+      expect((yield* catalog.model.get(ProviderV2.ID.openai, ModelV2.ID.make("gpt-5"))).enabled).toBe(true)
+      expect((yield* catalog.model.get(ProviderV2.ID.openai, ModelV2.ID.make("gpt-5-chat-latest"))).enabled).toBe(false)
+    }),
+  )
+
+  it.effect("does not disable gpt-5-chat-latest for non-OpenAI providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* add(plugin, yield* Connector.Service)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("custom-openai")
+        catalog.provider.update(item.id, () => {})
+        catalog.model.update(item.id, ModelV2.ID.make("gpt-5-chat-latest"), () => {})
+      })
+      expect(
+        (yield* catalog.model.get(ProviderV2.ID.make("custom-openai"), ModelV2.ID.make("gpt-5-chat-latest"))).enabled,
+      ).toBe(true)
+    }),
+  )
+})

packages/core/test/plugin/provider-opencode.test.ts

@@ -0,0 +1,232 @@
+import { describe, expect } from "bun:test"
+import { DateTime, Effect, Layer, Option } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { Credential } from "@opencode-ai/core/credential"
+import { EventV2 } from "@opencode-ai/core/event"
+import { Location } from "@opencode-ai/core/location"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { OpencodePlugin } from "@opencode-ai/core/plugin/provider/opencode"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { AbsolutePath } from "@opencode-ai/core/schema"
+import { location } from "../fixture/location"
+import { it, model, provider, withEnv } from "./provider-helper"
+
+const cost = (input: number, output = 0) => [{ input, output, cache: { read: 0, write: 0 } }]
+const locationLayer = Layer.succeed(
+  Location.Service,
+  Location.Service.of(location({ directory: AbsolutePath.make("test") })),
+)
+
+describe("OpencodePlugin", () => {
+  it.effect("uses a public key and disables paid models without credentials", () =>
+    withEnv({ OPENCODE_API_KEY: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(OpencodePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const item = provider("opencode")
+          catalog.provider.update(item.id, () => {})
+          const paid = model("opencode", "paid", { cost: cost(1) })
+          catalog.model.update(item.id, paid.id, (draft) => {
+            draft.cost = [...paid.cost]
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.opencode)).request.body.apiKey).toBe("public")
+        expect((yield* catalog.model.get(ProviderV2.ID.opencode, ModelV2.ID.make("paid"))).enabled).toBe(false)
+      }),
+    ),
+  )
+
+  it.effect("keeps free models without credentials", () =>
+    withEnv({ OPENCODE_API_KEY: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(OpencodePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const item = provider("opencode")
+          catalog.provider.update(item.id, () => {})
+          const free = model("opencode", "free", { cost: cost(0) })
+          catalog.model.update(item.id, free.id, (draft) => {
+            draft.cost = [...free.cost]
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.opencode)).request.body.apiKey).toBe("public")
+        expect((yield* catalog.model.get(ProviderV2.ID.opencode, ModelV2.ID.make("free"))).enabled).toBe(true)
+      }),
+    ),
+  )
+
+  it.effect("treats output-only cost as free without credentials", () =>
+    withEnv({ OPENCODE_API_KEY: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(OpencodePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const item = provider("opencode")
+          catalog.provider.update(item.id, () => {})
+          const outputOnly = model("opencode", "output-only", { cost: cost(0, 1) })
+          catalog.model.update(item.id, outputOnly.id, (draft) => {
+            draft.cost = [...outputOnly.cost]
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.opencode)).request.body.apiKey).toBe("public")
+        expect((yield* catalog.model.get(ProviderV2.ID.opencode, ModelV2.ID.make("output-only"))).enabled).toBe(true)
+      }),
+    ),
+  )
+
+  it.effect("uses OPENCODE_API_KEY as credentials", () =>
+    withEnv({ OPENCODE_API_KEY: "secret" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(OpencodePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const item = provider("opencode")
+          catalog.provider.update(item.id, () => {})
+          const paid = model("opencode", "paid", { cost: cost(1) })
+          catalog.model.update(item.id, paid.id, (draft) => {
+            draft.cost = [...paid.cost]
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.opencode)).request.body.apiKey).toBeUndefined()
+        expect((yield* catalog.model.get(ProviderV2.ID.opencode, ModelV2.ID.make("paid"))).enabled).toBe(true)
+      }),
+    ),
+  )
+
+  it.effect("uses configured provider env vars as credentials", () =>
+    withEnv({ OPENCODE_API_KEY: undefined, CUSTOM_OPENCODE_API_KEY: "secret" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(OpencodePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const item = provider("opencode", { env: ["CUSTOM_OPENCODE_API_KEY"] })
+          catalog.provider.update(item.id, (draft) => {
+            draft.env = [...item.env]
+          })
+          const paid = model("opencode", "paid", { cost: cost(1) })
+          catalog.model.update(item.id, paid.id, (draft) => {
+            draft.cost = [...paid.cost]
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.opencode)).request.body.apiKey).toBeUndefined()
+        expect((yield* catalog.model.get(ProviderV2.ID.opencode, ModelV2.ID.make("paid"))).enabled).toBe(true)
+      }),
+    ),
+  )
+
+  it.effect("uses configured apiKey as credentials", () =>
+    withEnv({ OPENCODE_API_KEY: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(OpencodePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const item = provider("opencode", {
+            request: {
+              headers: {},
+              body: { apiKey: "configured" },
+            },
+          })
+          catalog.provider.update(item.id, (draft) => {
+            draft.request = item.request
+          })
+          const paid = model("opencode", "paid", { cost: cost(1) })
+          catalog.model.update(item.id, paid.id, (draft) => {
+            draft.cost = [...paid.cost]
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.opencode)).request.body.apiKey).toBe("configured")
+        expect((yield* catalog.model.get(ProviderV2.ID.opencode, ModelV2.ID.make("paid"))).enabled).toBe(true)
+      }),
+    ),
+  )
+
+  it.effect("uses auth-enabled providers as credentials", () =>
+    withEnv({ OPENCODE_API_KEY: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(OpencodePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const item = provider("opencode", {
+            enabled: { via: "credential", credentialID: Credential.ID.make("credential") },
+          })
+          catalog.provider.update(item.id, (draft) => {
+            draft.enabled = item.enabled
+          })
+          const paid = model("opencode", "paid", { cost: cost(1) })
+          catalog.model.update(item.id, paid.id, (draft) => {
+            draft.cost = [...paid.cost]
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.opencode)).request.body.apiKey).toBeUndefined()
+        expect((yield* catalog.model.get(ProviderV2.ID.opencode, ModelV2.ID.make("paid"))).enabled).toBe(true)
+      }),
+    ),
+  )
+
+  it.effect("ignores non-opencode providers and models", () =>
+    withEnv({ OPENCODE_API_KEY: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const catalog = yield* Catalog.Service
+        yield* plugin.add(OpencodePlugin)
+        const transform = yield* catalog.transform()
+        yield* transform((catalog) => {
+          const item = provider("openai")
+          catalog.provider.update(item.id, () => {})
+          const paid = model("openai", "paid", { cost: cost(1) })
+          catalog.model.update(item.id, paid.id, (draft) => {
+            draft.cost = [...paid.cost]
+          })
+        })
+        expect((yield* catalog.provider.get(ProviderV2.ID.openai)).request.body.apiKey).toBeUndefined()
+        expect((yield* catalog.model.get(ProviderV2.ID.openai, ModelV2.ID.make("paid"))).enabled).toBe(true)
+      }),
+    ),
+  )
+
+  it.effect("prefers gpt-5-nano as the opencode small model", () =>
+    Effect.gen(function* () {
+      const catalog = yield* Catalog.Service
+      const providerID = ProviderV2.ID.opencode
+
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        catalog.provider.update(providerID, () => {})
+        catalog.model.update(providerID, ModelV2.ID.make("cheap-mini"), (model) => {
+          model.capabilities.input = ["text"]
+          model.capabilities.output = ["text"]
+          model.cost = [...cost(1, 1)]
+          model.time.released = DateTime.makeUnsafe(Date.now())
+        })
+        catalog.model.update(providerID, ModelV2.ID.make("gpt-5-nano"), (model) => {
+          model.capabilities.input = ["text"]
+          model.capabilities.output = ["text"]
+          model.cost = [...cost(10, 10)]
+          model.time.released = DateTime.makeUnsafe(Date.now())
+        })
+      })
+
+      const selected = yield* catalog.model.small(providerID)
+
+      expect(Option.getOrUndefined(selected)?.id).toBe(ModelV2.ID.make("gpt-5-nano"))
+    }).pipe(
+      Effect.provide(Catalog.locationLayer.pipe(Layer.provide(EventV2.defaultLayer), Layer.provide(locationLayer))),
+    ),
+  )
+})

packages/core/test/plugin/provider-openrouter.test.ts

@@ -0,0 +1,122 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { ProviderPlugins } from "@opencode-ai/core/plugin/provider"
+import { OpenRouterPlugin } from "@opencode-ai/core/plugin/provider/openrouter"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { expectPluginRegistered, it, model, provider } from "./provider-helper"
+
+describe("OpenRouterPlugin", () => {
+  it.effect("is registered so legacy OpenRouter behavior can be applied", () =>
+    Effect.sync(() =>
+      expectPluginRegistered(
+        ProviderPlugins.map((item) => item.id),
+        "openrouter",
+      ),
+    ),
+  )
+
+  it.effect("applies legacy referer headers only to openrouter", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(OpenRouterPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const openrouter = provider("openrouter", {
+          api: { type: "aisdk", package: "@openrouter/ai-sdk-provider" },
+          request: { headers: { Existing: "value" }, body: {} },
+        })
+        catalog.provider.update(openrouter.id, (item) => {
+          item.api = openrouter.api
+          item.request = openrouter.request
+        })
+        catalog.provider.update(ProviderV2.ID.make("nvidia"), () => {})
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("openrouter"))).request.headers).toEqual({
+        Existing: "value",
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("nvidia"))).request.headers).toEqual({})
+    }),
+  )
+
+  it.effect("creates an SDK only for the OpenRouter package", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(OpenRouterPlugin)
+
+      const ignored = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("openrouter", "openai/gpt-5"),
+          package: "@ai-sdk/openai-compatible",
+          options: { name: "openrouter" },
+        },
+        {},
+      )
+      expect(ignored.sdk).toBeUndefined()
+
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("custom", "openai/gpt-5"), package: "@openrouter/ai-sdk-provider", options: { name: "custom" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("filters OpenRouter's gpt-5 chat alias", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(OpenRouterPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const openrouter = provider("openrouter", {
+          api: { type: "aisdk", package: "@openrouter/ai-sdk-provider" },
+        })
+        catalog.provider.update(openrouter.id, (item) => {
+          item.api = openrouter.api
+        })
+        catalog.provider.update(ProviderV2.ID.openai, () => {})
+        for (const item of [
+          model("openrouter", "openai/gpt-5-chat"),
+          model("openrouter", "openai/gpt-5"),
+          model("openai", "openai/gpt-5-chat"),
+        ]) {
+          catalog.model.update(item.providerID, item.id, () => {})
+        }
+      })
+
+      expect(
+        (yield* catalog.model.get(ProviderV2.ID.make("openrouter"), ModelV2.ID.make("openai/gpt-5-chat"))).enabled,
+      ).toBe(false)
+      expect(
+        (yield* catalog.model.get(ProviderV2.ID.make("openrouter"), ModelV2.ID.make("openai/gpt-5"))).enabled,
+      ).toBe(true)
+      expect((yield* catalog.model.get(ProviderV2.ID.openai, ModelV2.ID.make("openai/gpt-5-chat"))).enabled).toBe(true)
+    }),
+  )
+
+  it.effect("does not disable gpt-5-chat-latest for non-OpenRouter providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(OpenRouterPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        catalog.provider.update(ProviderV2.ID.make("custom-openrouter"), () => {})
+        catalog.model.update(ProviderV2.ID.make("custom-openrouter"), ModelV2.ID.make("gpt-5-chat-latest"), () => {})
+      })
+      expect(
+        (yield* catalog.model.get(ProviderV2.ID.make("custom-openrouter"), ModelV2.ID.make("gpt-5-chat-latest")))
+          .enabled,
+      ).toBe(true)
+    }),
+  )
+})

packages/core/test/plugin/provider-perplexity.test.ts

@@ -0,0 +1,107 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { PerplexityPlugin } from "@opencode-ai/core/plugin/provider/perplexity"
+import { fakeSelectorSdk, it, model } from "./provider-helper"
+
+describe("PerplexityPlugin", () => {
+  it.effect("creates a Perplexity SDK for the exact @ai-sdk/perplexity package", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(PerplexityPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("perplexity", "sonar"), package: "@ai-sdk/perplexity", options: { name: "perplexity" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("ignores packages that are not the bundled Perplexity package", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(PerplexityPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("perplexity", "sonar"),
+          package: "@ai-sdk/perplexity-compatible",
+          options: { name: "perplexity" },
+        },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("uses the Perplexity provider ID as the SDK name for the bundled provider", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const providers: string[] = []
+      yield* plugin.add(PerplexityPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("perplexity-sdk-inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              providers.push(evt.sdk.languageModel("sonar").provider)
+            }),
+        }),
+      })
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("perplexity", "sonar"), package: "@ai-sdk/perplexity", options: { name: "perplexity" } },
+        {},
+      )
+      expect(providers).toEqual(["perplexity"])
+    }),
+  )
+
+  it.effect("creates bundled Perplexity SDKs for custom provider IDs", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const providers: string[] = []
+      yield* plugin.add(PerplexityPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("custom-perplexity-sdk-inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              providers.push(evt.sdk.languageModel("sonar").provider)
+            }),
+        }),
+      })
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-perplexity", "sonar"),
+          package: "@ai-sdk/perplexity",
+          options: { name: "custom-perplexity" },
+        },
+        {},
+      )
+      expect(providers).toEqual(["perplexity"])
+    }),
+  )
+
+  it.effect("leaves Perplexity language selection to the default languageModel fallback", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(PerplexityPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("perplexity", "alias", { api: { id: ModelV2.ID.make("sonar") } }),
+          sdk: fakeSelectorSdk(calls),
+          options: {},
+        },
+        {},
+      )
+      expect(calls).toEqual([])
+      expect(result.language).toBeUndefined()
+    }),
+  )
+})

packages/core/test/plugin/provider-sap-ai-core.test.ts

@@ -0,0 +1,127 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { SapAICorePlugin } from "@opencode-ai/core/plugin/provider/sap-ai-core"
+import { fixtureProvider, it, model, npmLayer, withEnv } from "./provider-helper"
+
+const pluginWithNpm = { id: SapAICorePlugin.id, effect: SapAICorePlugin.effect.pipe(Effect.provide(npmLayer)) }
+
+describe("SapAICorePlugin", () => {
+  it.effect("copies serviceKey option into AICORE_SERVICE_KEY but keeps SDK options to deployment metadata", () =>
+    withEnv(
+      { AICORE_SERVICE_KEY: undefined, AICORE_DEPLOYMENT_ID: "deployment", AICORE_RESOURCE_GROUP: "resource-group" },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(pluginWithNpm)
+          const sdk = yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("sap-ai-core", "sap-model"),
+              package: fixtureProvider,
+              options: { name: "sap-ai-core", serviceKey: "service-key" },
+            },
+            {},
+          )
+          expect(process.env.AICORE_SERVICE_KEY).toBe("service-key")
+          expect(sdk.sdk.options).toEqual({ deploymentId: "deployment", resourceGroup: "resource-group" })
+        }),
+    ),
+  )
+
+  it.effect("preserves existing AICORE_SERVICE_KEY over serviceKey option", () =>
+    withEnv(
+      {
+        AICORE_SERVICE_KEY: "env-service-key",
+        AICORE_DEPLOYMENT_ID: "deployment",
+        AICORE_RESOURCE_GROUP: "resource-group",
+      },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(pluginWithNpm)
+          const sdk = yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("sap-ai-core", "sap-model"),
+              package: fixtureProvider,
+              options: { name: "sap-ai-core", serviceKey: "option-service-key" },
+            },
+            {},
+          )
+          expect(process.env.AICORE_SERVICE_KEY).toBe("env-service-key")
+          expect(sdk.sdk.options).toEqual({ deploymentId: "deployment", resourceGroup: "resource-group" })
+        }),
+    ),
+  )
+
+  it.effect("omits deployment and resourceGroup SDK options when no service key is available", () =>
+    withEnv(
+      { AICORE_SERVICE_KEY: undefined, AICORE_DEPLOYMENT_ID: "deployment", AICORE_RESOURCE_GROUP: "resource-group" },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(pluginWithNpm)
+          const sdk = yield* plugin.trigger(
+            "aisdk.sdk",
+            { model: model("sap-ai-core", "sap-model"), package: fixtureProvider, options: { name: "sap-ai-core" } },
+            {},
+          )
+          expect(process.env.AICORE_SERVICE_KEY).toBeUndefined()
+          expect(sdk.sdk.options).toEqual({})
+        }),
+    ),
+  )
+
+  it.effect("uses the callable SDK for language selection", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(pluginWithNpm)
+      const sdk = Object.assign((modelID: string) => ({ modelID, provider: "callable" }), {
+        languageModel() {
+          throw new Error("SAP AI Core should call the SDK directly")
+        },
+      })
+      const language = yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("sap-ai-core", "sap-model"), sdk, options: {} },
+        {},
+      )
+      expect(language.language as unknown).toEqual({ modelID: "sap-model", provider: "callable" })
+    }),
+  )
+
+  it.effect("ignores non-SAP AI Core providers", () =>
+    withEnv(
+      { AICORE_SERVICE_KEY: undefined, AICORE_DEPLOYMENT_ID: "deployment", AICORE_RESOURCE_GROUP: "resource-group" },
+      () =>
+        Effect.gen(function* () {
+          const plugin = yield* PluginV2.Service
+          yield* plugin.add(pluginWithNpm)
+          const sdk = yield* plugin.trigger(
+            "aisdk.sdk",
+            {
+              model: model("openai", "sap-model"),
+              package: fixtureProvider,
+              options: { name: "openai", serviceKey: "service-key" },
+            },
+            {},
+          )
+          const language = yield* plugin.trigger(
+            "aisdk.language",
+            {
+              model: model("openai", "sap-model"),
+              sdk: () => {
+                throw new Error("SAP AI Core should ignore other providers")
+              },
+              options: {},
+            },
+            {},
+          )
+          expect(process.env.AICORE_SERVICE_KEY).toBeUndefined()
+          expect(sdk.sdk).toBeUndefined()
+          expect(language.language).toBeUndefined()
+        }),
+    ),
+  )
+})

packages/core/test/plugin/provider-snowflake-cortex.test.ts

@@ -0,0 +1,193 @@
+import { describe, expect, it as bun_it } from "bun:test"
+import { Effect } from "effect"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { SnowflakeCortexPlugin, cortexFetch } from "@opencode-ai/core/plugin/provider/snowflake-cortex"
+import { ProviderPlugins } from "@opencode-ai/core/plugin/provider"
+import { expectPluginRegistered, it, model, withEnv } from "./provider-helper"
+
+describe("SnowflakeCortexPlugin", () => {
+  it.effect("is registered in ProviderPlugins before OpenAICompatiblePlugin", () =>
+    Effect.sync(() => {
+      expectPluginRegistered(
+        ProviderPlugins.map((item) => item.id),
+        "snowflake-cortex",
+      )
+      const ids = ProviderPlugins.map((p) => p.id as string)
+      expect(ids.indexOf("snowflake-cortex")).toBeLessThan(ids.indexOf("openai-compatible"))
+    }),
+  )
+
+  it.effect("ignores non-snowflake-cortex providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(SnowflakeCortexPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("openai", "gpt-4"), package: "@ai-sdk/openai", options: { name: "openai" } },
+        {},
+      )
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("creates SDK for snowflake-cortex using SNOWFLAKE_CORTEX_PAT env var", () =>
+    withEnv({ SNOWFLAKE_CORTEX_PAT: "test-pat" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(SnowflakeCortexPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("snowflake-cortex", "claude-sonnet-4-6"),
+            package: "@ai-sdk/openai-compatible",
+            options: { name: "snowflake-cortex", baseURL: "https://test.snowflakecomputing.com/api/v2/cortex/v1" },
+          },
+          {},
+        )
+        expect(result.sdk).toBeDefined()
+      }),
+    ),
+  )
+
+  it.effect("falls back to options.apiKey when SNOWFLAKE_CORTEX_PAT env var is absent", () =>
+    withEnv({ SNOWFLAKE_CORTEX_PAT: undefined }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        yield* plugin.add(SnowflakeCortexPlugin)
+        const result = yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("snowflake-cortex", "claude-sonnet-4-6"),
+            package: "@ai-sdk/openai-compatible",
+            options: {
+              name: "snowflake-cortex",
+              baseURL: "https://test.snowflakecomputing.com/api/v2/cortex/v1",
+              apiKey: "options-pat",
+            },
+          },
+          {},
+        )
+        expect(result.sdk).toBeDefined()
+      }),
+    ),
+  )
+
+  it.effect("sets includeUsage on the SDK options", () =>
+    withEnv({ SNOWFLAKE_CORTEX_PAT: "test-pat" }, () =>
+      Effect.gen(function* () {
+        const plugin = yield* PluginV2.Service
+        const captured: Record<string, unknown>[] = []
+        yield* plugin.add(SnowflakeCortexPlugin)
+        yield* plugin.add({
+          id: PluginV2.ID.make("inspector"),
+          effect: Effect.succeed({
+            "aisdk.sdk": (evt) =>
+              Effect.sync(() => {
+                captured.push({ ...evt.options })
+              }),
+          }),
+        })
+        yield* plugin.trigger(
+          "aisdk.sdk",
+          {
+            model: model("snowflake-cortex", "claude-sonnet-4-6"),
+            package: "@ai-sdk/openai-compatible",
+            options: { name: "snowflake-cortex", baseURL: "https://test.snowflakecomputing.com/api/v2/cortex/v1" },
+          },
+          {},
+        )
+        expect(captured[0]?.includeUsage).toBe(true)
+      }),
+    ),
+  )
+})
+
+type FetchLike = (url: string | URL | Request, init?: RequestInit) => Promise<Response>
+
+describe("cortexFetch", () => {
+  bun_it("rewrites max_tokens to max_completion_tokens", async () => {
+    const captured: RequestInit[] = []
+    const upstream: FetchLike = async (_url, init) => {
+      captured.push(init ?? {})
+      return new Response("{}", { status: 200 })
+    }
+    await cortexFetch(upstream)("https://test", {
+      method: "POST",
+      body: JSON.stringify({ model: "claude-sonnet-4-6", max_tokens: 1024 }),
+    })
+    const body = JSON.parse(captured[0].body as string)
+    expect(body.max_completion_tokens).toBe(1024)
+    expect(body.max_tokens).toBeUndefined()
+  })
+
+  bun_it("preserves body when max_tokens is absent", async () => {
+    const captured: RequestInit[] = []
+    const upstream: FetchLike = async (_url, init) => {
+      captured.push(init ?? {})
+      return new Response("{}", { status: 200 })
+    }
+    const original = JSON.stringify({ model: "claude-sonnet-4-6", temperature: 0.7 })
+    await cortexFetch(upstream)("https://test", { method: "POST", body: original })
+    expect(captured[0].body).toBe(original)
+  })
+
+  bun_it("treats 400 'conversation complete' as a stop response", async () => {
+    const upstream: FetchLike = async () =>
+      new Response(JSON.stringify({ message: "Conversation complete" }), {
+        status: 400,
+        headers: { "content-type": "application/json" },
+      })
+    const response = await cortexFetch(upstream)("https://test", {})
+    expect(response.status).toBe(200)
+    const data = (await response.json()) as { choices: { finish_reason: string }[] }
+    expect(data.choices[0].finish_reason).toBe("stop")
+  })
+
+  bun_it("passes through other 400 errors unchanged", async () => {
+    const upstream: FetchLike = async () =>
+      new Response(JSON.stringify({ message: "Invalid model" }), {
+        status: 400,
+        headers: { "content-type": "application/json" },
+      })
+    const response = await cortexFetch(upstream)("https://test", {})
+    expect(response.status).toBe(400)
+  })
+
+  bun_it("passes through non-400 errors unchanged", async () => {
+    const upstream: FetchLike = async () => new Response("Unauthorized", { status: 401 })
+    const response = await cortexFetch(upstream)("https://test", {})
+    expect(response.status).toBe(401)
+  })
+
+  bun_it("handles invalid JSON body gracefully without throwing", async () => {
+    const captured: RequestInit[] = []
+    const upstream: FetchLike = async (_url, init) => {
+      captured.push(init ?? {})
+      return new Response("{}", { status: 200 })
+    }
+    const invalidBody = "{ not json }"
+    await cortexFetch(upstream)("https://test", { method: "POST", body: invalidBody })
+    expect(captured[0].body).toBe(invalidBody)
+  })
+
+  bun_it("rewrites role:'' to role:'assistant' in streaming SSE chunks", async () => {
+    const chunk = `data: {"choices":[{"delta":{"role":"","content":"Hi"},"index":0}]}\n\n`
+    const upstream: FetchLike = async () =>
+      new Response(
+        new ReadableStream({
+          start: (ctrl) => {
+            ctrl.enqueue(new TextEncoder().encode(chunk))
+            ctrl.close()
+          },
+        }),
+        {
+          status: 200,
+          headers: { "content-type": "text/event-stream" },
+        },
+      )
+    const response = await cortexFetch(upstream)("https://test", {})
+    const text = await response.text()
+    expect(text).toContain('"role":"assistant"')
+    expect(text).not.toContain('"role":""')
+  })
+})

packages/core/test/plugin/provider-togetherai.test.ts

@@ -0,0 +1,97 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { TogetherAIPlugin } from "@opencode-ai/core/plugin/provider/togetherai"
+import { fakeSelectorSdk, it, model } from "./provider-helper"
+
+describe("TogetherAIPlugin", () => {
+  it.effect("creates a TogetherAI SDK for @ai-sdk/togetherai", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(TogetherAIPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("togetherai", "model"), package: "@ai-sdk/togetherai", options: { name: "togetherai" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("matches the old bundled provider package exactly", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(TogetherAIPlugin)
+
+      const ignored = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("togetherai", "model"),
+          package: "file:///tmp/@ai-sdk/togetherai-provider.js",
+          options: { name: "togetherai" },
+        },
+        {},
+      )
+      expect(ignored.sdk).toBeUndefined()
+
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("togetherai", "model"), package: "@ai-sdk/togetherai", options: { name: "togetherai" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("creates bundled TogetherAI SDKs for custom provider IDs", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const observed: string[] = []
+      yield* plugin.add(TogetherAIPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              observed.push(evt.sdk.languageModel("model").provider)
+            }),
+        }),
+      })
+
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-togetherai", "model"),
+          package: "@ai-sdk/togetherai",
+          options: { name: "custom-togetherai" },
+        },
+        {},
+      )
+
+      expect(observed).toEqual(["togetherai.chat"])
+    }),
+  )
+
+  it.effect("defaults language selection to sdk.languageModel with the model API ID", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(TogetherAIPlugin)
+
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: model("togetherai", "meta-llama/Llama-3.3-70B-Instruct-Turbo"),
+          sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
+          options: {},
+        },
+        {},
+      )
+
+      expect(result.language).toBeUndefined()
+      expect(calls).toEqual([])
+      expect(result.language ?? fakeSelectorSdk(calls).languageModel(result.model.api.id)).toBeDefined()
+      expect(calls).toEqual(["languageModel:meta-llama/Llama-3.3-70B-Instruct-Turbo"])
+    }),
+  )
+})

packages/core/test/plugin/provider-venice.test.ts

@@ -0,0 +1,86 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { VenicePlugin } from "@opencode-ai/core/plugin/provider/venice"
+import { fakeSelectorSdk, it, model } from "./provider-helper"
+
+describe("VenicePlugin", () => {
+  it.effect("creates a Venice SDK for venice-ai-sdk-provider", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(VenicePlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("venice", "model"), package: "venice-ai-sdk-provider", options: { name: "venice" } },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+    }),
+  )
+
+  it.effect("uses the model provider ID as the bundled Venice SDK name", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const observed: string[] = []
+      yield* plugin.add(VenicePlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              observed.push(evt.sdk.languageModel("model").provider)
+            }),
+        }),
+      })
+      const result = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-venice", "model"),
+          package: "venice-ai-sdk-provider",
+          options: { name: "custom-venice", apiKey: "test" },
+        },
+        {},
+      )
+      expect(result.sdk).toBeDefined()
+      expect(observed).toEqual(["custom-venice.chat"])
+    }),
+  )
+
+  it.effect("only handles the bundled venice-ai-sdk-provider package", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(VenicePlugin)
+      const similar = yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("venice", "model"),
+          package: "file:///tmp/venice-ai-sdk-provider.js",
+          options: { name: "venice" },
+        },
+        {},
+      )
+      const other = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("venice", "model"), package: "@ai-sdk/openai-compatible", options: { name: "venice" } },
+        {},
+      )
+      expect(similar.sdk).toBeUndefined()
+      expect(other.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("leaves Venice language selection to the default languageModel fallback", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+      yield* plugin.add(VenicePlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        { model: model("venice", "alias"), sdk: fakeSelectorSdk(calls), options: {} },
+        {},
+      )
+      expect(calls).toEqual([])
+      expect(result.language).toBeUndefined()
+    }),
+  )
+})

packages/core/test/plugin/provider-vercel.test.ts

@@ -0,0 +1,77 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { VercelPlugin } from "@opencode-ai/core/plugin/provider/vercel"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { it, model, provider } from "./provider-helper"
+
+describe("VercelPlugin", () => {
+  it.effect("applies legacy lower-case referer headers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(VercelPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("vercel", {
+          api: { type: "aisdk", package: "@ai-sdk/vercel" },
+          request: { headers: { Existing: "1" }, body: {} },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+          draft.request = item.request
+        })
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("vercel"))).request.headers).toEqual({
+        Existing: "1",
+        "http-referer": "https://opencode.ai/",
+        "x-title": "opencode",
+      })
+    }),
+  )
+
+  it.effect("does not add legacy upper-case referer headers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(VercelPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("vercel", { api: { type: "aisdk", package: "@ai-sdk/vercel" } })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+        })
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("vercel"))).request.headers).not.toHaveProperty(
+        "HTTP-Referer",
+      )
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("vercel"))).request.headers).not.toHaveProperty("X-Title")
+    }),
+  )
+
+  it.effect("creates @ai-sdk/vercel SDKs for custom provider IDs", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(VercelPlugin)
+      const event = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model: model("custom-vercel", "v0-1.0-md"), package: "@ai-sdk/vercel", options: { name: "custom-vercel" } },
+        {},
+      )
+      expect(event.sdk).toBeDefined()
+      expect(event.sdk.languageModel("v0-1.0-md").provider).toBe("vercel.chat")
+    }),
+  )
+
+  it.effect("ignores non-Vercel providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(VercelPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => catalog.provider.update(provider("gateway").id, () => {}))
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("gateway"))).request.headers).toEqual({})
+    }),
+  )
+})

packages/core/test/plugin/provider-xai.test.ts

@@ -0,0 +1,116 @@
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { EventV2 } from "@opencode-ai/core/event"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { XAIPlugin } from "@opencode-ai/core/plugin/provider/xai"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { testEffect } from "../lib/effect"
+import { fakeSelectorSdk } from "./provider-helper"
+
+const it = testEffect(PluginV2.locationLayer.pipe(Layer.provide(EventV2.defaultLayer)))
+
+const model = new ModelV2.Info({
+  ...ModelV2.Info.empty(ProviderV2.ID.make("xai"), ModelV2.ID.make("grok-4")),
+  api: {
+    id: ModelV2.ID.make("grok-4"),
+    type: "aisdk",
+    package: "@ai-sdk/xai",
+  },
+})
+
+describe("XAIPlugin", () => {
+  it.effect("creates an xAI SDK only for @ai-sdk/xai", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      yield* plugin.add(XAIPlugin)
+
+      const ignored = yield* plugin.trigger(
+        "aisdk.sdk",
+        { model, package: "@ai-sdk/openai-compatible", options: {} },
+        {},
+      )
+
+      const result = yield* plugin.trigger("aisdk.sdk", { model, package: "@ai-sdk/xai", options: {} }, {})
+
+      expect(ignored.sdk).toBeUndefined()
+      expect(typeof result.sdk?.responses).toBe("function")
+    }),
+  )
+
+  it.effect("creates xAI SDKs for custom provider IDs", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const providers: string[] = []
+
+      yield* plugin.add(XAIPlugin)
+      yield* plugin.add(
+        PluginV2.define({
+          id: PluginV2.ID.make("xai-sdk-name-observer"),
+          effect: Effect.gen(function* () {
+            return {
+              "aisdk.sdk": Effect.fn(function* (evt) {
+                if (!evt.sdk) return
+                providers.push(evt.sdk.responses("grok-4").provider)
+              }),
+            }
+          }),
+        }),
+      )
+
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: new ModelV2.Info({ ...model, providerID: ProviderV2.ID.make("custom-xai") }),
+          package: "@ai-sdk/xai",
+          options: {},
+        },
+        {},
+      )
+
+      expect(providers).toEqual(["xai.responses"])
+    }),
+  )
+
+  it.effect("uses responses with the model api.id for xAI language models", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+
+      yield* plugin.add(XAIPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: new ModelV2.Info({ ...model, id: ModelV2.ID.make("alias") }),
+          sdk: fakeSelectorSdk(calls),
+          options: {},
+        },
+        {},
+      )
+
+      expect(calls).toEqual(["responses:grok-4"])
+      expect(result.language).toBeDefined()
+    }),
+  )
+
+  it.effect("ignores non-xAI providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const calls: string[] = []
+
+      yield* plugin.add(XAIPlugin)
+      const result = yield* plugin.trigger(
+        "aisdk.language",
+        {
+          model: new ModelV2.Info({ ...model, providerID: ProviderV2.ID.openai }),
+          sdk: fakeSelectorSdk(calls),
+          options: {},
+        },
+        {},
+      )
+
+      expect(calls).toEqual([])
+      expect(result.language).toBeUndefined()
+    }),
+  )
+})

packages/core/test/plugin/provider-zenmux.test.ts

@@ -0,0 +1,116 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { ProviderPlugins } from "@opencode-ai/core/plugin/provider"
+import { ZenmuxPlugin } from "@opencode-ai/core/plugin/provider/zenmux"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { expectPluginRegistered, it, provider } from "./provider-helper"
+
+describe("ZenmuxPlugin", () => {
+  it.effect("is registered so legacy referer headers can be applied", () =>
+    Effect.sync(() =>
+      expectPluginRegistered(
+        ProviderPlugins.map((item) => item.id),
+        "zenmux",
+      ),
+    ),
+  )
+
+  it.effect("applies the exact legacy Zenmux headers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(ZenmuxPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("zenmux", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://zenmux.ai/api/v1" },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+        })
+      })
+      const result = yield* catalog.provider.get(ProviderV2.ID.make("zenmux"))
+      expect(result.request.headers).toEqual({ "HTTP-Referer": "https://opencode.ai/", "X-Title": "opencode" })
+      expect(Object.keys(result.request.headers).sort()).toEqual(["HTTP-Referer", "X-Title"])
+    }),
+  )
+
+  it.effect("merges legacy Zenmux headers with existing headers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(ZenmuxPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("zenmux", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://zenmux.ai/api/v1" },
+          request: { headers: { Existing: "value" }, body: {} },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+          draft.request = item.request
+        })
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("zenmux"))).request.headers).toEqual({
+        Existing: "value",
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+      })
+    }),
+  )
+
+  it.effect("lets configured Zenmux legacy headers override defaults", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(ZenmuxPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("zenmux", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://zenmux.ai/api/v1" },
+          request: {
+            headers: { "HTTP-Referer": "https://example.com/", "X-Title": "custom-title" },
+            body: {},
+          },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+          draft.request = item.request
+        })
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("zenmux"))).request.headers).toEqual({
+        "HTTP-Referer": "https://example.com/",
+        "X-Title": "custom-title",
+      })
+    }),
+  )
+
+  it.effect("guards legacy Zenmux headers to the exact zenmux provider id", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(ZenmuxPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("openrouter", {
+          request: {
+            headers: { "HTTP-Referer": "https://example.com/", "X-Title": "custom-title" },
+            body: {},
+          },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.request = item.request
+        })
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.openrouter)).request.headers).toEqual({
+        "HTTP-Referer": "https://example.com/",
+        "X-Title": "custom-title",
+      })
+    }),
+  )
+})

packages/core/test/plugin/skill.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { AgentV2 } from "@opencode-ai/core/agent"
+import { FSUtil } from "@opencode-ai/core/fs-util"
+import { SkillPlugin } from "@opencode-ai/core/plugin/skill"
+import { SkillV2 } from "@opencode-ai/core/skill"
+import { SkillDiscovery } from "@opencode-ai/core/skill/discovery"
+import { testEffect } from "../lib/effect"
+
+const it = testEffect(
+  SkillV2.layer.pipe(
+    Layer.provide(FSUtil.defaultLayer),
+    Layer.provide(SkillDiscovery.defaultLayer),
+    Layer.provideMerge(AgentV2.locationLayer),
+  ),
+)
+
+describe("SkillPlugin.Plugin", () => {
+  it.effect("registers the built-in customize-opencode skill", () =>
+    Effect.gen(function* () {
+      const skill = yield* SkillV2.Service
+      yield* SkillPlugin.Plugin.effect.pipe(Effect.provideService(SkillV2.Service, skill))
+
+      expect(yield* skill.list()).toContainEqual(
+        expect.objectContaining({
+          name: "customize-opencode",
+          description: expect.stringContaining("opencode's own configuration"),
+        }),
+      )
+    }),
+  )
+})