refactor(plugin): isolate HTTP hook dispatch

packages/ai/src/route/client.ts

@@ -5,7 +5,7 @@ import { Endpoint, type EndpointPatch } from "./endpoint"
 import { RequestExecutor } from "./executor"
 import { Framing } from "./framing"
 import { HttpTransport } from "./transport"
-import type { HttpRequestTransform, Transport, TransportRuntime } from "./transport"
+import type { HttpMiddleware, Transport, TransportRuntime } from "./transport"
 import { WebSocketExecutor } from "./transport"
 import type { Protocol } from "./protocol"
 import { applyCachePolicy } from "../cache-policy"
@@ -155,7 +155,7 @@ export interface Interface {
 }
 
 export interface StreamOptions {
-  readonly transform?: HttpRequestTransform
+  readonly http?: HttpMiddleware
 }
 
 export interface StreamMethod {
@@ -307,7 +307,7 @@ function makeFromTransport<Body, Prepared, Frame, Event, State>(
           auth: routeInput.auth ?? Auth.none,
           encodeBody,
           headers: routeInput.headers,
-          transform: options?.transform,
+          middleware: options?.http,
         }),
       streamPrepared: (prepared: Prepared, request: LLMRequest, runtime: TransportRuntime) => {
         const route = `${request.model.provider}/${request.model.route.id}`

packages/ai/src/route/executor.ts

@@ -20,9 +20,18 @@ import { classifyProviderFailure } from "../provider-error"
 export interface Interface {
   readonly execute: (
     request: HttpClientRequest.HttpClientRequest,
+    middleware?: HttpMiddleware,
   ) => Effect.Effect<HttpClientResponse.HttpClientResponse, AIError>
 }
 
+export type HttpHandler = (
+  request: HttpClientRequest.HttpClientRequest,
+) => Effect.Effect<HttpClientResponse.HttpClientResponse, Error>
+export type HttpMiddleware = (
+  request: HttpClientRequest.HttpClientRequest,
+  handler: HttpHandler,
+) => Effect.Effect<HttpClientResponse.HttpClientResponse, Error>
+
 export class Service extends Context.Service<Service, Interface>()("@opencode/AI/RequestExecutor") {}
 
 const BODY_LIMIT = 16_384
@@ -261,7 +270,7 @@ const toHttpError = (redactedNames: ReadonlyArray<string | RegExp>) => (error: u
     return transportError({ message: error.message, kind: "Timeout" })
   }
   if (!HttpClientError.isHttpClientError(error)) {
-    return transportError({ message: "HTTP transport failed" })
+    return transportError({ message: error instanceof Error ? error.message : "HTTP transport failed" })
   }
   const request = "request" in error ? error.request : undefined
   if (error.reason._tag === "TransportError") {
@@ -282,12 +291,20 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient> = Layer.e
   Service,
   Effect.gen(function* () {
     const http = yield* HttpClient.HttpClient
-    const executeOnce = (request: HttpClientRequest.HttpClientRequest) =>
+    const executeOnce = (request: HttpClientRequest.HttpClientRequest, middleware?: HttpMiddleware) =>
       Effect.gen(function* () {
         const redactedNames = yield* Headers.CurrentRedactedNames
-        return yield* http
-          .execute(request)
-          .pipe(Effect.mapError(toHttpError(redactedNames)), Effect.flatMap(statusError(request, redactedNames)))
+        if (!middleware)
+          return yield* http
+            .execute(request)
+            .pipe(Effect.mapError(toHttpError(redactedNames)), Effect.flatMap(statusError(request, redactedNames)))
+
+        const response = yield* middleware(request, (input) =>
+          http
+            .execute(input)
+            .pipe(Effect.mapError((cause) => (cause instanceof Error ? cause : new Error(String(cause))))),
+        ).pipe(Effect.mapError(toHttpError(redactedNames)))
+        return yield* statusError(response.request, redactedNames)(response)
       })
     return Service.of({
       execute: executeOnce,

packages/ai/src/route/index.ts

@@ -23,4 +23,4 @@ export type { ApiKeyMode, AuthOverride, ProviderAuthOption } from "./auth-option
 export type { Definition as EndpointFn, EndpointInput } from "./endpoint"
 export type { Definition as FramingDef } from "./framing"
 export type { Protocol as ProtocolDef } from "./protocol"
-export type { HttpRequest, HttpRequestTransform, Transport as TransportDef, TransportRuntime } from "./transport"
+export type { HttpHandler, HttpMiddleware, Transport as TransportDef, TransportRuntime } from "./transport"

packages/ai/src/route/transport/http.ts

@@ -3,7 +3,7 @@ import { Headers, HttpClientRequest } from "effect/unstable/http"
 import { Auth } from "../auth"
 import { render as renderEndpoint } from "../endpoint"
 import { Framing } from "../framing"
-import type { Transport, TransportPrepareInput } from "./index"
+import type { HttpMiddleware, Transport, TransportPrepareInput } from "./index"
 import * as ProviderShared from "../../protocols/shared"
 import { mergeJsonRecords, type LLMRequest } from "../../schema"
 
@@ -19,6 +19,7 @@ export interface JsonRequestParts<Body = unknown> {
 export interface HttpPrepared<Frame> {
   readonly request: HttpClientRequest.HttpClientRequest
   readonly framing: Framing.Definition<Frame>
+  readonly middleware?: HttpMiddleware
 }
 
 const applyQuery = (url: string, query: Record<string, string> | undefined) => {
@@ -74,21 +75,21 @@ export const httpJson = <Body, Frame>(input: HttpJsonInput<Body, Frame>): HttpJs
   prepare: (prepareInput) =>
     Effect.gen(function* () {
       const parts = yield* jsonRequestParts({ ...prepareInput })
-      const request = { url: parts.url, method: "POST", headers: { ...parts.headers }, body: parts.bodyText }
-      yield* (prepareInput.transform?.(request) ?? Effect.void)
+      const request = ProviderShared.jsonPost({
+        url: parts.url,
+        body: parts.bodyText,
+        headers: parts.headers,
+      })
       return {
-        request: ProviderShared.jsonPost({
-          url: request.url,
-          body: request.body ?? "",
-          headers: Headers.fromInput(request.headers),
-        }),
+        request,
         framing: input.framing,
+        middleware: prepareInput.middleware,
       }
     }),
   frames: (prepared, request, runtime) =>
     Stream.unwrap(
       runtime.http
-        .execute(prepared.request)
+        .execute(prepared.request, prepared.middleware)
         .pipe(
           Effect.map((response) =>
             prepared.framing.frame(

packages/ai/src/route/transport/index.ts

@@ -1,7 +1,7 @@
 import type { Effect, Stream } from "effect"
 import { Endpoint } from "../endpoint"
 import { Auth } from "../auth"
-import type { Interface as RequestExecutorInterface } from "../executor"
+import type { HttpMiddleware, Interface as RequestExecutorInterface } from "../executor"
 import type { Interface as WebSocketExecutorInterface } from "./websocket"
 import type { AIError, LLMRequest } from "../../schema"
 
@@ -10,15 +10,6 @@ export interface TransportRuntime {
   readonly webSocket?: WebSocketExecutorInterface
 }
 
-export interface HttpRequest {
-  url: string
-  readonly method: string
-  headers: Record<string, string>
-  body: string | undefined
-}
-
-export type HttpRequestTransform = (request: HttpRequest) => Effect.Effect<void>
-
 export interface Transport<Body, Prepared, Frame> {
   readonly id: string
   readonly prepare: (input: TransportPrepareInput<Body>) => Effect.Effect<Prepared, AIError>
@@ -32,8 +23,9 @@ export interface TransportPrepareInput<Body> {
   readonly auth: Auth.Definition
   readonly encodeBody: (body: Body) => string
   readonly headers?: (input: { readonly request: LLMRequest }) => Record<string, string>
-  readonly transform?: HttpRequestTransform
+  readonly middleware?: HttpMiddleware
 }
 
 export * as HttpTransport from "./http"
+export type { HttpHandler, HttpMiddleware } from "../executor"
 export { WebSocketExecutor, WebSocketTransport } from "./websocket"

packages/ai/test/compile.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
-import { Effect, Schema } from "effect"
-import { HttpClientRequest } from "effect/unstable/http"
+import { Effect, Ref, Schema } from "effect"
+import { HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
 import { LLM, mergeProviderOptions } from "../src"
 import { AnthropicMessages, OpenAIChat } from "../src/protocols"
 import { Auth, LLMClient } from "../src/route"
@@ -146,12 +146,16 @@ describe("request option precedence", () => {
         prompt: "Say hello.",
       }),
       {
-        transform: (request) =>
-          Effect.sync(() => {
-            expect(request.headers.authorization).toBe("Bearer fresh-key")
-            request.url = "https://proxy.test/v1/chat/completions"
-            request.headers["x-plugin"] = "transformed"
-            request.body = JSON.stringify({ transformed: true })
+        http: (request, handler) =>
+          Effect.gen(function* () {
+            return yield* handler(
+              request.pipe(
+                HttpClientRequest.setUrl("https://proxy.test/v1/chat/completions"),
+                HttpClientRequest.setMethod("PUT"),
+                HttpClientRequest.setHeader("x-plugin", "transformed"),
+                HttpClientRequest.bodyText(JSON.stringify({ transformed: true }), "application/custom+json"),
+              ),
+            )
           }),
       },
     ).pipe(
@@ -160,7 +164,9 @@ describe("request option precedence", () => {
           Effect.gen(function* () {
             const web = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
             expect(web.url).toBe("https://proxy.test/v1/chat/completions")
+            expect(web.method).toBe("PUT")
             expect(web.headers.get("x-plugin")).toBe("transformed")
+            expect(web.headers.get("content-type")).toBe("application/custom+json")
             expect(decodeJson(input.text)).toEqual({ transformed: true })
             return input.respond(sseEvents(deltaChunk({}, "stop")), {
               headers: { "content-type": "text/event-stream" },
@@ -171,6 +177,82 @@ describe("request option precedence", () => {
     ),
   )
 
+  it.effect("transforms the HTTP response before protocol decoding", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({
+          model: OpenAIChat.route
+            .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("test") })
+            .model({ id: "gpt-4o-mini" }),
+          prompt: "Say hello.",
+        }),
+        {
+          http: (request, handler) =>
+            Effect.gen(function* () {
+              const response = yield* handler(request)
+              return HttpClientResponse.fromWeb(
+                response.request,
+                new Response((yield* response.text).replace("network", "hooked"), {
+                  status: response.status,
+                  headers: response.headers,
+                }),
+              )
+            }),
+        },
+      ).pipe(
+        Effect.provide(
+          dynamicResponse((input) =>
+            Effect.succeed(
+              input.respond(sseEvents(deltaChunk({ content: "network" }, "stop")), {
+                headers: { "content-type": "text/event-stream" },
+              }),
+            ),
+          ),
+        ),
+      )
+
+      expect(response.text).toBe("hooked")
+    }),
+  )
+
+  it.effect("can inspect an error response and retry the native request", () =>
+    Effect.gen(function* () {
+      const attempts = yield* Ref.make(0)
+      const response = yield* LLMClient.generate(
+        LLM.request({
+          model: OpenAIChat.route
+            .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("stale") })
+            .model({ id: "gpt-4o-mini" }),
+          prompt: "Say hello.",
+        }),
+        {
+          http: (request, handler) =>
+            Effect.gen(function* () {
+              const response = yield* handler(request)
+              expect(response.status).toBe(401)
+              return yield* handler(HttpClientRequest.setHeader(request, "authorization", "Bearer refreshed"))
+            }),
+        },
+      ).pipe(
+        Effect.provide(
+          dynamicResponse((input) =>
+            Effect.gen(function* () {
+              yield* Ref.update(attempts, (value) => value + 1)
+              if (input.request.headers.authorization !== "Bearer refreshed")
+                return input.respond("unauthorized", { status: 401 })
+              return input.respond(sseEvents(deltaChunk({ content: "retried" }, "stop")), {
+                headers: { "content-type": "text/event-stream" },
+              })
+            }),
+          ),
+        ),
+      )
+
+      expect(response.text).toBe("retried")
+      expect(yield* Ref.get(attempts)).toBe(2)
+    }),
+  )
+
   it.effect("applies raw body overlays after protocol lowering", () =>
     LLMClient.generate(
       LLM.request({

packages/ai/test/executor.test.ts

@@ -67,6 +67,18 @@ const expectAIError = (error: unknown) => {
 const errorHttp = (error: AIError) => ("http" in error.reason ? error.reason.http : undefined)
 
 describe("RequestExecutor", () => {
+  it.effect("preserves middleware error messages", () =>
+    Effect.gen(function* () {
+      const executor = yield* RequestExecutor.Service
+      const error = yield* executor
+        .execute(request, () => Effect.fail(new Error("plugin rejected request")))
+        .pipe(Effect.flip)
+
+      expectAIError(error)
+      expect(error.reason.message).toBe("plugin rejected request")
+    }).pipe(Effect.provide(responsesLayer([]))),
+  )
+
   it.effect("classifies context overflow responses", () =>
     Effect.gen(function* () {
       const executor = yield* RequestExecutor.Service

packages/client/src/effect/api/api.ts

@@ -1502,25 +1502,18 @@ export interface ProjectCopyApi<E = never> {
 export type Endpoint25_0Input = {
   readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
 }
-export type Endpoint25_0Output = { readonly location: Location.Info; readonly data: Vcs.Info }
-export type VcsGetOperation<E = never> = (input?: Endpoint25_0Input) => Effect.Effect<Endpoint25_0Output, E>
+export type Endpoint25_0Output = { readonly location: Location.Info; readonly data: ReadonlyArray<Vcs.FileStatus> }
+export type VcsStatusOperation<E = never> = (input?: Endpoint25_0Input) => Effect.Effect<Endpoint25_0Output, E>
 
 export type Endpoint25_1Input = {
   readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
-}
-export type Endpoint25_1Output = { readonly location: Location.Info; readonly data: ReadonlyArray<Vcs.FileStatus> }
-export type VcsStatusOperation<E = never> = (input?: Endpoint25_1Input) => Effect.Effect<Endpoint25_1Output, E>
-
-export type Endpoint25_2Input = {
-  readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
   readonly mode: Vcs.Mode
   readonly context?: number | undefined
 }
-export type Endpoint25_2Output = { readonly location: Location.Info; readonly data: ReadonlyArray<FileDiff.Info> }
-export type VcsDiffOperation<E = never> = (input: Endpoint25_2Input) => Effect.Effect<Endpoint25_2Output, E>
+export type Endpoint25_1Output = { readonly location: Location.Info; readonly data: ReadonlyArray<FileDiff.Info> }
+export type VcsDiffOperation<E = never> = (input: Endpoint25_1Input) => Effect.Effect<Endpoint25_1Output, E>
 
 export interface VcsApi<E = never> {
-  readonly get: VcsGetOperation<E>
   readonly status: VcsStatusOperation<E>
   readonly diff: VcsDiffOperation<E>
 }

packages/client/src/effect/generated/client.ts

@@ -210,8 +210,6 @@ import type {
   Endpoint25_0Output,
   Endpoint25_1Input,
   Endpoint25_1Output,
-  Endpoint25_2Input,
-  Endpoint25_2Output,
   Endpoint26_0Output,
   Endpoint26_1Input,
   Endpoint26_1Output,
@@ -1184,26 +1182,17 @@ const adaptGroup24 = (raw: RawClient["server.projectCopy"]) => ({
 
 const Endpoint25_0 = (raw: RawClient["server.vcs"]) => (input?: Endpoint25_0Input) =>
   preserveEffect<Endpoint25_0Output>()(
-    raw["vcs.get"]({ query: { location: input?.["location"] } }).pipe(Effect.mapError(mapClientError)),
-  )
-
-const Endpoint25_1 = (raw: RawClient["server.vcs"]) => (input?: Endpoint25_1Input) =>
-  preserveEffect<Endpoint25_1Output>()(
     raw["vcs.status"]({ query: { location: input?.["location"] } }).pipe(Effect.mapError(mapClientError)),
   )
 
-const Endpoint25_2 = (raw: RawClient["server.vcs"]) => (input: Endpoint25_2Input) =>
-  preserveEffect<Endpoint25_2Output>()(
+const Endpoint25_1 = (raw: RawClient["server.vcs"]) => (input: Endpoint25_1Input) =>
+  preserveEffect<Endpoint25_1Output>()(
     raw["vcs.diff"]({ query: { location: input["location"], mode: input["mode"], context: input["context"] } }).pipe(
       Effect.mapError(mapClientError),
     ),
   )
 
-const adaptGroup25 = (raw: RawClient["server.vcs"]) => ({
-  get: Endpoint25_0(raw),
-  status: Endpoint25_1(raw),
-  diff: Endpoint25_2(raw),
-})
+const adaptGroup25 = (raw: RawClient["server.vcs"]) => ({ status: Endpoint25_0(raw), diff: Endpoint25_1(raw) })
 
 const Endpoint26_0 = (raw: RawClient["server.debug"]) => () =>
   preserveEffect<Endpoint26_0Output>()(raw["debug.location"]({}).pipe(Effect.mapError(mapClientError)))

packages/client/src/promise/generated/client.ts

@@ -202,8 +202,6 @@ import type {
   ProjectCopyRemoveOutput,
   ProjectCopyRefreshInput,
   ProjectCopyRefreshOutput,
-  VcsGetInput,
-  VcsGetOutput,
   VcsStatusInput,
   VcsStatusOutput,
   VcsDiffInput,
@@ -1704,18 +1702,6 @@ export function make(options: ClientOptions) {
         ),
     },
     vcs: {
-      get: (input?: VcsGetInput, requestOptions?: RequestOptions) =>
-        request<VcsGetOutput>(
-          {
-            method: "GET",
-            path: `/api/vcs`,
-            query: { location: input?.["location"] },
-            successStatus: 200,
-            declaredStatuses: [401, 400],
-            empty: false,
-          },
-          requestOptions,
-        ),
       status: (input?: VcsStatusInput, requestOptions?: RequestOptions) =>
         request<VcsStatusOutput>(
           {

packages/client/src/promise/generated/types.ts

@@ -530,8 +530,6 @@ export type ReferenceGitSource = {
 
 export type ProjectCopyCopy = { directory: string }
 
-export type VcsBranch = { current?: string; default?: string }
-
 export type VcsFileStatus = {
   file: string
   additions: number
@@ -1747,8 +1745,6 @@ export type SessionStatus2 = {
 
 export type ReferenceSource = ReferenceLocalSource | ReferenceGitSource
 
-export type VcsInfo = { branch: VcsBranch }
-
 export type PermissionRuleset = Array<PermissionRule>
 
 export type SessionInfo = {
@@ -4906,17 +4902,6 @@ export type ProjectCopyRefreshInput = {
 
 export type ProjectCopyRefreshOutput = void
 
-export type VcsGetInput = {
-  readonly location?: {
-    readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
-  }["location"]
-}
-
-export type VcsGetOutput = {
-  location: { directory: string; workspaceID?: string; project: { id: string; directory: string; canonical: string } }
-  data: VcsInfo
-}
-
 export type VcsStatusInput = {
   readonly location?: {
     readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined

packages/client/test/promise.test.ts

@@ -44,7 +44,7 @@ test("exposes every standard HTTP API group", () => {
   expect(Object.keys(client.integration.command)).toEqual(["connect", "status", "cancel"])
   expect(Object.keys(client.websearch)).toEqual(["providers", "query"])
   expect(Object.keys(client.file)).toEqual(["read", "list", "find"])
-  expect(Object.keys(client.vcs)).toEqual(["get", "status", "diff"])
+  expect(Object.keys(client.vcs)).toEqual(["status", "diff"])
   expect(Object.keys(client.pty)).toEqual(["list", "create", "get", "update", "remove"])
   expect(Object.keys(client.shell)).toEqual(["list", "create", "get", "timeout", "output", "remove"])
   expect(Object.keys(client.project)).toEqual(["list", "current", "directories"])

packages/core/src/agent.ts

@@ -1,16 +1,11 @@
 export * as Agent from "./agent"
 
-import path from "path"
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
 import { Array, Context, Effect, Layer, Types } from "effect"
 import { Agent } from "@opencode-ai/schema/agent"
-import { Global } from "@opencode-ai/util/global"
 import { Bus } from "./bus"
 import { State } from "./state"
 
-const SHELL_OUTPUT_GLOB = (data: string) => path.join(data, "shell", "*", "*")
-const TOOL_OUTPUT_GLOB = (data: string) => path.join(data, "tool-output", "*")
-
 export const ID = Agent.ID
 export type ID = typeof ID.Type
 export const Name = Agent.Name
@@ -56,13 +51,6 @@ const layer = Layer.effect(
   Service,
   Effect.gen(function* () {
     const bus = yield* Bus.Service
-    const global = yield* Global.Service
-    const permissions: Info["permissions"] = [
-      { action: "external_directory", resource: SHELL_OUTPUT_GLOB(global.data), effect: "allow" },
-      { action: "external_directory", resource: TOOL_OUTPUT_GLOB(global.data), effect: "allow" },
-      { action: "external_directory", resource: path.join(global.tmp, "*"), effect: "allow" },
-      { action: "external_directory", resource: path.join(global.config, "*"), effect: "allow" },
-    ]
     const state = State.create<Data, Draft>({
       name: "agent",
       initial: () => ({ agents: new Map() }),
@@ -73,13 +61,7 @@ const layer = Layer.effect(
           draft.default = id
         },
         update: (id, fn) => {
-          const defaults = Info.default(id)
-          const current =
-            draft.agents.get(id) ??
-            ({
-              ...defaults,
-              permissions: [...defaults.permissions, ...permissions],
-            } as Types.DeepMutable<Info>)
+          const current = draft.agents.get(id) ?? (Info.default(id) as Types.DeepMutable<Info>)
           if (!draft.agents.has(id)) draft.agents.set(id, current)
           fn(current)
           current.id = id
@@ -132,4 +114,4 @@ const layer = Layer.effect(
   }),
 )
 
-export const node = makeLocationNode({ service: Service, layer, deps: [Bus.node, Global.node] })
+export const node = makeLocationNode({ service: Service, layer, deps: [Bus.node] })

packages/core/src/instructions/builtins.ts

@@ -2,7 +2,6 @@ export * as InstructionBuiltIns from "./builtins"
 
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
 import { Context, DateTime, Effect, Layer, Schema } from "effect"
-import { Global } from "@opencode-ai/util/global"
 import { Location } from "../location"
 import { SessionSchema } from "../session/schema"
 import { Instructions } from "./index"
@@ -16,7 +15,6 @@ export class Service extends Context.Service<Service, Interface>()("@opencode/In
 const layer = Layer.effect(
   Service,
   Effect.gen(function* () {
-    const global = yield* Global.Service
     const location = yield* Location.Service
     return Service.of({
       load: (sessionID) =>
@@ -33,7 +31,6 @@ const layer = Layer.effect(
                   `  Workspace root folder: ${location.project.directory}`,
                   `  Is directory a git repo: ${location.vcs?.type === "git" ? "yes" : "no"}`,
                   `  Platform: ${process.platform}`,
-                  `  Use ${global.tmp} for temporary work outside the workspace; it already exists and is pre-approved for external directory access.`,
                   "</env>",
                 ].join("\n"),
               ),
@@ -61,4 +58,4 @@ const layer = Layer.effect(
   }),
 )
 
-export const node = makeLocationNode({ service: Service, layer, deps: [Global.node, Location.node] })
+export const node = makeLocationNode({ service: Service, layer, deps: [Location.node] })

packages/core/src/plugin/agent.ts

@@ -1,10 +1,17 @@
 export * as AgentPlugin from "./agent"
 
+import path from "path"
 import { define } from "@opencode-ai/plugin/effect/plugin"
 import { Effect } from "effect"
 import { Agent } from "../agent"
+import { Global } from "@opencode-ai/util/global"
+import { Location } from "../location"
 import { Permission } from "../permission"
 
+// Combined output files written by the Shell service, e.g. `<data>/shell/<projectID>/<shellID>.out`.
+// Whitelisted so agents can read a command's full captured output without an external-directory prompt.
+const SHELL_OUTPUT_GLOB = path.join(Global.Path.data, "shell", "*", "*")
+
 const PROMPT_EXPLORE = `You are a file search specialist. You excel at thoroughly navigating and exploring codebases.
 
 Your strengths:
@@ -93,12 +100,38 @@ Rules:
 export const Plugin = define({
   id: "opencode.agent",
   effect: Effect.fn(function* (ctx) {
+    const location = yield* Location.Service
+    const worktree = location.directory
+    const whitelistedDirs = [SHELL_OUTPUT_GLOB, path.join(Global.Path.tmp, "*")]
+    const readonlyExternalDirectory: Permission.Ruleset = [
+      { action: "external_directory", resource: "*", effect: "ask" },
+      ...whitelistedDirs.map(
+        (resource): Permission.Rule => ({ action: "external_directory", resource, effect: "allow" }),
+      ),
+    ]
+    const defaults: Permission.Ruleset = [
+      { action: "*", resource: "*", effect: "allow" },
+      ...readonlyExternalDirectory,
+      { action: "question", resource: "*", effect: "deny" },
+      { action: "plan_enter", resource: "*", effect: "deny" },
+      { action: "plan_exit", resource: "*", effect: "deny" },
+      { action: "read", resource: "*", effect: "allow" },
+      { action: "read", resource: "*.env", effect: "ask" },
+      { action: "read", resource: "*.env.*", effect: "ask" },
+      { action: "read", resource: "*.env.example", effect: "allow" },
+    ]
+
     yield* ctx.agent.transform((draft) => {
       draft.update(Agent.defaultID, (item) => {
         item.name = Agent.Name.make("Build")
         item.description = "The default agent. Executes tools based on configured permissions."
         item.mode = "primary"
-        item.permissions.push({ action: "question", resource: "*", effect: "allow" })
+        item.permissions.push(
+          ...Permission.merge(defaults, [
+            { action: "question", resource: "*", effect: "allow" },
+            { action: "plan_enter", resource: "*", effect: "allow" },
+          ]),
+        )
       })
 
       draft.update(Agent.ID.make("plan"), (item) => {
@@ -106,8 +139,18 @@ export const Plugin = define({
         item.description = "Plan mode. Disallows all edit tools."
         item.mode = "primary"
         item.permissions.push(
-          { action: "question", resource: "*", effect: "allow" },
-          { action: "edit", resource: "*", effect: "deny" },
+          ...Permission.merge(defaults, [
+            { action: "question", resource: "*", effect: "allow" },
+            { action: "plan_exit", resource: "*", effect: "allow" },
+            { action: "external_directory", resource: path.join(Global.Path.data, "plans", "*"), effect: "allow" },
+            { action: "edit", resource: "*", effect: "deny" },
+            { action: "edit", resource: path.join(".opencode", "plans", "*.md"), effect: "allow" },
+            {
+              action: "edit",
+              resource: path.relative(worktree, path.join(Global.Path.data, "plans", "*.md")),
+              effect: "allow",
+            },
+          ]),
         )
       })
 
@@ -116,16 +159,10 @@ export const Plugin = define({
         item.description =
           "General-purpose agent for researching complex questions and executing multi-step tasks. Use this agent to execute multiple units of work in parallel."
         item.mode = "subagent"
-        item.permissions.push(
-          { action: "question", resource: "*", effect: "deny" },
-          { action: "subagent", resource: "*", effect: "deny" },
-        )
+        item.permissions.push(...Permission.merge(defaults, [{ action: "subagent", resource: "*", effect: "deny" }]))
       })
 
       draft.update(Agent.ID.make("explore"), (item) => {
-        const externalDirectories = item.permissions.filter(
-          (rule) => rule.action === "external_directory" && rule.effect === "allow",
-        )
         item.name = Agent.Name.make("Explore")
         item.description =
           'Fast agent specialized for exploring codebases. Use this when you need to quickly find files by patterns (eg. "src/components/**/*.tsx"), search code for keywords (eg. "API endpoints"), or answer questions about the codebase (eg. "how do API endpoints work?"). When calling this agent, specify the desired thoroughness level: "quick" for basic searches, "medium" for moderate exploration, or "very thorough" for comprehensive analysis across multiple locations and naming conventions.'
@@ -133,6 +170,7 @@ export const Plugin = define({
         item.mode = "subagent"
         item.permissions.push(
           ...Permission.merge(
+            defaults,
             [
               { action: "*", resource: "*", effect: "deny" },
               { action: "grep", resource: "*", effect: "allow" },
@@ -140,12 +178,9 @@ export const Plugin = define({
               { action: "webfetch", resource: "*", effect: "allow" },
               { action: "websearch", resource: "*", effect: "allow" },
               { action: "read", resource: "*", effect: "allow" },
-              { action: "read", resource: "*.env", effect: "ask" },
-              { action: "read", resource: "*.env.*", effect: "ask" },
-              { action: "read", resource: "*.env.example", effect: "allow" },
               { action: "subagent", resource: "*", effect: "deny" },
             ],
-            [{ action: "external_directory", resource: "*", effect: "ask" }, ...externalDirectories],
+            readonlyExternalDirectory,
           ),
         )
       })
@@ -155,7 +190,7 @@ export const Plugin = define({
         item.mode = "primary"
         item.hidden = true
         item.system = PROMPT_COMPACTION
-        item.permissions.push({ action: "*", resource: "*", effect: "deny" })
+        item.permissions.push(...Permission.merge(defaults, [{ action: "*", resource: "*", effect: "deny" }]))
       })
 
       draft.update(Agent.ID.make("title"), (item) => {
@@ -163,7 +198,7 @@ export const Plugin = define({
         item.mode = "primary"
         item.hidden = true
         item.system = PROMPT_TITLE
-        item.permissions.push({ action: "*", resource: "*", effect: "deny" })
+        item.permissions.push(...Permission.merge(defaults, [{ action: "*", resource: "*", effect: "deny" }]))
       })
 
       draft.update(Agent.ID.make("summary"), (item) => {
@@ -171,7 +206,7 @@ export const Plugin = define({
         item.mode = "primary"
         item.hidden = true
         item.system = PROMPT_SUMMARY
-        item.permissions.push({ action: "*", resource: "*", effect: "deny" })
+        item.permissions.push(...Permission.merge(defaults, [{ action: "*", resource: "*", effect: "deny" }]))
       })
     })
   }),

packages/core/src/plugin/hooks.ts

@@ -1,13 +1,22 @@
 export * as PluginHooks from "./hooks"
 
 import type { AISDKHooks } from "@opencode-ai/plugin/effect/aisdk"
-import type { SessionHooks } from "@opencode-ai/plugin/effect/session"
+import type { SessionContext, SessionHttpContext } from "@opencode-ai/plugin/effect/session"
 import type { ShellHooks } from "@opencode-ai/plugin/effect/shell"
 import type { ToolHooks } from "@opencode-ai/plugin/effect/tool"
 import { Context, Effect, Layer, Scope } from "effect"
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
 import { State } from "../state"
 
+interface SessionHttpEvent extends SessionHttpContext {
+  request: (input: Request) => Effect.Effect<Response, Error>
+}
+
+interface SessionHooks {
+  readonly context: SessionContext
+  readonly http: SessionHttpEvent
+}
+
 export interface Domains {
   readonly aisdk: AISDKHooks
   readonly session: SessionHooks

packages/core/src/plugin/host.ts

@@ -2,6 +2,7 @@ export * as PluginHost from "./host"
 
 import { Plugin } from "@opencode-ai/plugin/effect"
 import type { IntegrationMethodRegistration } from "@opencode-ai/plugin/effect/integration"
+import type { SessionHookRegistration } from "@opencode-ai/plugin/effect/session"
 import type { CredentialOAuth } from "@opencode-ai/sdk/v2/types"
 import { EventManifest } from "@opencode-ai/schema/event-manifest"
 import { App } from "../app"
@@ -337,7 +338,16 @@ export const make = Effect.fn("PluginHost.make")(function* (plugin: import("../p
         }),
     },
     session: {
-      hook: (name, callback) => hooks.register("session", name, callback),
+      hook: (...registration: SessionHookRegistration) => {
+        if (registration[0] !== "http") return hooks.register("session", ...registration)
+        const middleware = registration[1]
+        return hooks.register("session", "http", (event) =>
+          Effect.sync(() => {
+            const next = event.request
+            event.request = (request) => middleware(event, request, next)
+          }),
+        )
+      },
       create: (input) =>
         runtime.session.create({
           id: input?.id,

packages/core/src/plugin/promise.ts

@@ -2,6 +2,7 @@ export * as PluginPromise from "./promise"
 
 import { define } from "@opencode-ai/plugin/effect/plugin"
 import type { Context, Plugin } from "@opencode-ai/plugin/promise/plugin"
+import type { SessionHookRegistration } from "@opencode-ai/plugin/promise/session"
 import type { Info } from "@opencode-ai/plugin/promise/tool"
 import { Agent } from "@opencode-ai/schema/agent"
 import { Integration } from "@opencode-ai/schema/integration"
@@ -194,7 +195,9 @@ export function fromPromise(plugin: Plugin) {
                               ),
                             ),
                           refresh:
-                            refresh === undefined ? undefined : (credential) => Effect.promise(() => refresh(credential)),
+                            refresh === undefined
+                              ? undefined
+                              : (credential) => Effect.promise(() => refresh(credential)),
                         })
                       },
                       remove: draft.method.remove,
@@ -263,8 +266,28 @@ export function fromPromise(plugin: Plugin) {
               ),
           },
           session: {
-            hook: (name, callback) =>
-              register(host.session.hook(name, (event) => Effect.promise(() => Promise.resolve(callback(event))))),
+            hook: (...registration: SessionHookRegistration) => {
+              if (registration[0] !== "http")
+                return register(
+                  host.session.hook(registration[0], (event) =>
+                    Effect.promise(() => Promise.resolve(registration[1](event))),
+                  ),
+                )
+              const middleware = registration[1]
+              return register(
+                host.session.hook("http", (event, input, next) =>
+                  Effect.tryPromise({
+                    try: (signal) =>
+                      Promise.resolve(
+                        middleware(event, new Request(input, { signal }), (request) =>
+                          Effect.runPromiseWith(context)(next(new Request(request, { signal })), { signal }),
+                        ),
+                      ),
+                    catch: (cause) => (cause instanceof Error ? cause : new Error(String(cause))),
+                  }),
+                ),
+              )
+            },
             create: (input) =>
               run(
                 host.session.create(

packages/core/src/plugin/provider/openai.ts

@@ -225,17 +225,14 @@ export const OpenAIPlugin = define({
         })
       }
     })
-    yield* ctx.session.hook("request", (evt) =>
-      Effect.sync(() => {
-        if (!chatgpt || evt.model.providerID !== Provider.ID.openai) return
-        const url = new URL(evt.url)
-        if (url.origin === "https://api.openai.com") {
-          evt.url = `${codexBaseURL}${url.pathname.replace(/^\/v1/, "")}${url.search}`
-        }
-        evt.headers.originator = "opencode"
-        evt.headers["session-id"] = evt.sessionID
-      }),
-    )
+    yield* ctx.session.hook("http", (evt, request, next) => {
+      if (!chatgpt || evt.model.providerID !== Provider.ID.openai) return next(request)
+      const url = new URL(request.url)
+      request.headers.set("originator", "opencode")
+      request.headers.set("session-id", evt.sessionID)
+      if (url.origin !== "https://api.openai.com") return next(request)
+      return next(new Request(`${codexBaseURL}${url.pathname.replace(/^\/v1/, "")}${url.search}`, request))
+    })
 
     const refresh = () => loading.withPermit(load().pipe(Effect.andThen(ctx.catalog.reload())))
     yield* bus.subscribe(Integration.Event.ConnectionUpdated).pipe(

packages/core/src/session/model-request.ts

@@ -4,7 +4,8 @@ import { LLM, Message, SystemPart, type LLMRequest } from "@opencode-ai/ai"
 import type { StreamOptions } from "@opencode-ai/ai/route"
 import type { Content } from "@opencode-ai/schema/tool"
 import { SessionError } from "@opencode-ai/schema/session-error"
-import { Cause, Config, Context, Effect, Layer, Result } from "effect"
+import { Cause, Config, Context, Effect, Layer, Result, Stream } from "effect"
+import { HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
 import { App } from "../app"
 import { Model } from "../model"
@@ -48,9 +49,7 @@ interface Prepared {
    * One request-scoped execution operation. Unknown, hook-removed, and
    * step-limit-violating calls fail individually through the same seam.
    */
-  readonly executeTool: (
-    input: Parameters<Tool.Snapshot["execute"]>[0],
-  ) => Effect.Effect<Tool.Result, ExecuteError>
+  readonly executeTool: (input: Parameters<Tool.Snapshot["execute"]>[0]) => Effect.Effect<Tool.Result, ExecuteError>
   /** True when this request is the final Step; violating calls are rejected and no continuation follows. */
   readonly stepLimitReached: boolean
 }
@@ -137,8 +136,7 @@ export const boundImages = (messages: LLMRequest["messages"]) => {
           result: {
             ...part.result,
             value: part.result.value.map((item: Content) => {
-              if (item.type !== "file" || !isImage(item.mime) || imageBytes - removed <= IMAGE_BYTES_TARGET)
-                return item
+              if (item.type !== "file" || !isImage(item.mime) || imageBytes - removed <= IMAGE_BYTES_TARGET) return item
               removed += Buffer.byteLength(item.uri)
               return { type: "text" as const, text: IMAGE_REMOVED }
             }),
@@ -189,64 +187,66 @@ export const layer = Layer.effect(
         .map(SystemPart.make)
       const history = toLLMMessages(input.context.messages, resolved.ref, providerMetadataKey)
       const messages = stepLimitReached ? [...history, Message.assistant(MAX_STEPS_PROMPT)] : history
-      const registry = new Map(tools.definitions.map((tool) => [tool.name, tool]))
-      // The definition objects we hand to hooks, mapped back to their tools. Hooks rename a
-      // tool by moving its definition to a new key; recognizing the object recovers the tool.
-      const given = new Map(
-        tools.definitions.map(
-          (tool) => [{ description: tool.description, input: { ...tool.inputSchema } }, tool] as const,
-        ),
-      )
-      // Hooks mutate this record in place: edit descriptions and schemas, rename, or remove.
-      const context = yield* hooks.trigger("session", "context", {
+      const toolDefinitions = tools.definitions
+      const toolsByName = new Map(toolDefinitions.map((tool) => [tool.name, tool]))
+      // Hooks may reshape available definitions but cannot advertise tools omitted by permissions or the Step limit.
+      const contextEvent = yield* hooks.trigger("session", "context", {
         sessionID: session.id,
         agent: agent.id,
         model: resolved.ref,
         system,
         messages,
-        tools: Object.fromEntries(Array.from(given, ([definition, tool]) => [tool.name, definition])),
+        tools: Object.fromEntries(
+          toolDefinitions.map((tool) => [tool.name, { description: tool.description, input: { ...tool.inputSchema } }]),
+        ),
+      })
+      const hookedTools = Object.entries(contextEvent.tools).flatMap(([name, tool]) => {
+        const registered = toolsByName.get(name)
+        return registered ? [{ ...registered, description: tool.description, inputSchema: tool.input }] : []
       })
-      // Match each surviving entry back to its tool, by recognizing a moved definition or
-      // by key. Identity wins so a definition moved onto another tool's name still executes
-      // the tool it describes. Entries matching neither were invented by a hook and dropped.
-      // `tool.name` stays canonical so execution can translate renamed calls back.
-      const hooked = new Map(
-        Object.entries(context.tools).flatMap(([name, definition]) => {
-          const tool = given.get(definition) ?? registry.get(name)
-          if (!tool) return []
-          return [[name, { ...tool, description: definition.description, inputSchema: definition.input }] as const]
-        }),
-      )
       const request = LLM.request({
         model,
         http: {
           headers: SessionModelHeaders.make(session, app),
         },
         providerOptions: { [providerMetadataKey]: { promptCacheKey } },
-        system: context.system,
-        messages: boundImages(unsupportedParts(context.messages, resolved.capabilities)),
-        tools: Array.from(hooked, ([name, tool]) => ({ ...tool, name })),
+        system: contextEvent.system,
+        messages: boundImages(unsupportedParts(contextEvent.messages, resolved.capabilities)),
+        tools: hookedTools,
         toolChoice: stepLimitReached ? "none" : undefined,
       })
       const options: StreamOptions = {
-        transform: (request) =>
-          hooks
-            .trigger("session", "request", {
+        http: (request, handler) =>
+          Effect.gen(function* () {
+            let sent = request
+            const origins = new WeakMap<Response, HttpClientRequest.HttpClientRequest>()
+            const web = yield* HttpClientRequest.toWeb(request)
+            const event = yield* hooks.trigger("session", "http", {
               sessionID: session.id,
               agent: agent.id,
               model: resolved.ref,
-              ...request,
-            })
-            .pipe(
-              Effect.tap((event) =>
-                Effect.sync(() => {
-                  request.url = event.url
-                  request.headers = event.headers
-                  request.body = event.body
+              request: (input) =>
+                Effect.gen(function* () {
+                  sent = HttpClientRequest.fromWeb(input)
+                  if (input.body)
+                    sent = HttpClientRequest.bodyUint8Array(
+                      sent,
+                      new Uint8Array(yield* Effect.promise(() => input.clone().arrayBuffer())),
+                      input.headers.get("content-type") ?? undefined,
+                    )
+                  const response = yield* handler(sent)
+                  const body = [204, 205, 304].includes(response.status)
+                    ? null
+                    : yield* Stream.toReadableStreamEffect(response.stream)
+                  const output = new Response(body, { status: response.status, headers: response.headers })
+                  origins.set(output, sent)
+                  return output
                 }),
-              ),
-              Effect.asVoid,
-            ),
+            })
+            const response = yield* event.request(web)
+            const origin = origins.get(response) ?? sent
+            return HttpClientResponse.fromWeb(origin, response)
+          }).pipe(Effect.mapError((cause) => (cause instanceof Error ? cause : new Error(String(cause))))),
       }
       if (promptCacheSnapshots) {
         const current = PromptCacheDiagnostics.snapshot(request)
@@ -265,15 +265,12 @@ export const layer = Layer.effect(
           }),
         )
       }
-      const executeTool: Prepared["executeTool"] = (input) => {
-        if (stepLimitReached)
-          return new Tool.Error({ message: "Tools are disabled after the maximum agent steps" })
-        const tool = hooked.get(input.call.name)
-        // A registered tool absent from the hooked set was removed or renamed by a hook.
-        if (!tool && registry.has(input.call.name))
-          return new Tool.Error({ message: `Tool is not available for this request: ${input.call.name}` })
+      const executeTool: Prepared["executeTool"] = (executeInput) => {
+        if (stepLimitReached) return new Tool.Error({ message: "Tools are disabled after the maximum agent steps" })
+        if (toolsByName.has(executeInput.call.name) && !Object.hasOwn(contextEvent.tools, executeInput.call.name))
+          return new Tool.Error({ message: `Tool is not available for this request: ${executeInput.call.name}` })
         return tools
-          .execute(tool ? { ...input, call: { ...input.call, name: tool.name } } : input)
+          .execute(executeInput)
           .pipe(Effect.catchCauseFilter(declineDefect, (decline) => Effect.fail(decline)))
       }
       return {

packages/core/src/vcs.ts

@@ -2,7 +2,7 @@ export * as Vcs from "./vcs"
 
 import { Context, Effect, Layer } from "effect"
 import { FileDiff } from "@opencode-ai/schema/file-diff"
-import { FileStatus, Info, Mode } from "@opencode-ai/schema/vcs"
+import { FileStatus, Mode } from "@opencode-ai/schema/vcs"
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
 import { FSUtil } from "@opencode-ai/util/fs-util"
 import { Location } from "./location"
@@ -10,14 +10,13 @@ import { AppProcess } from "@opencode-ai/util/process"
 import { VcsGit } from "./vcs/git"
 import { VcsHg } from "./vcs/hg"
 
-export { FileStatus, Info, Mode }
+export { FileStatus, Mode }
 
 export interface DiffOptions {
   readonly context?: number
 }
 
 export interface Interface {
-  readonly info: () => Effect.Effect<Info>
   readonly status: () => Effect.Effect<FileStatus[]>
   readonly diff: (mode: Mode, options?: DiffOptions) => Effect.Effect<FileDiff.Info[]>
 }
@@ -41,10 +40,6 @@ const layer = Layer.effect(
     const location = yield* Location.Service
     const impl = adapter(proc, fs, location)
     return Service.of({
-      info: Effect.fn("Vcs.info")(function* () {
-        if (!impl) return { branch: {} }
-        return yield* impl.info()
-      }),
       status: Effect.fn("Vcs.status")(function* () {
         if (!impl) return []
         return yield* impl.status()

packages/core/src/vcs/git.ts

@@ -3,7 +3,7 @@ export * as VcsGit from "./git"
 import { Effect } from "effect"
 import { ChildProcess } from "effect/unstable/process"
 import { FileDiff } from "@opencode-ai/schema/file-diff"
-import { FileStatus, Info, Mode } from "@opencode-ai/schema/vcs"
+import { FileStatus, Mode } from "@opencode-ai/schema/vcs"
 import { AppProcess } from "@opencode-ai/util/process"
 import type { DiffOptions, Interface } from "../vcs"
 import { chunksByFile, emptyPatch, MAX_PATCH_BYTES, MAX_TOTAL_PATCH_BYTES, PATCH_CONTEXT_LINES } from "./patch"
@@ -20,12 +20,6 @@ export function make(proc: AppProcess.Interface, input: { directory: string; wor
   const ctx: Ctx = { git: makeGit(proc), directory: input.directory, worktree: input.worktree }
 
   return {
-    info: Effect.fn("VcsGit.info")(function* () {
-      const [current, root] = yield* Effect.all([ctx.git.branch(ctx.directory), ctx.git.defaultBranch(ctx.directory)], {
-        concurrency: 2,
-      })
-      return { branch: { current, default: root?.name } } satisfies Info
-    }),
     status: Effect.fn("VcsGit.status")(function* () {
       const git = ctx.git
       const ref = (yield* git.hasHead(ctx.directory)) ? "HEAD" : undefined

packages/core/src/vcs/hg.ts

@@ -4,7 +4,7 @@ import path from "path"
 import { Effect } from "effect"
 import { ChildProcess } from "effect/unstable/process"
 import { FileDiff } from "@opencode-ai/schema/file-diff"
-import { FileStatus, Info, Mode } from "@opencode-ai/schema/vcs"
+import { FileStatus, Mode } from "@opencode-ai/schema/vcs"
 import { FSUtil } from "@opencode-ai/util/fs-util"
 import { AppProcess } from "@opencode-ai/util/process"
 import type { DiffOptions, Interface } from "../vcs"
@@ -73,9 +73,6 @@ export function make(
   })
 
   return {
-    info: Effect.fn("VcsHg.info")(function* () {
-      return { branch: { current: yield* hg.branch(), default: "default" } } satisfies Info
-    }),
     status: Effect.fn("VcsHg.status")(function* () {
       const [items, batch] = yield* Effect.all(
         // Zero-context patches are enough to count changed lines.

packages/core/test/agent.test.ts

@@ -1,4 +1,3 @@
-import path from "path"
 import { describe, expect } from "bun:test"
 import { Effect, Exit, Fiber, Layer, Scope, Stream } from "effect"
 import { TestClock } from "effect/testing"
@@ -10,19 +9,15 @@ import { Location } from "@opencode-ai/core/location"
 import { Permission } from "@opencode-ai/core/permission"
 import { AgentPlugin } from "@opencode-ai/core/plugin/agent"
 import { AbsolutePath } from "@opencode-ai/core/schema"
-import { Global } from "@opencode-ai/util/global"
 import { location } from "./fixture/location"
 import { testEffect } from "./lib/effect"
 import { agentHost, host } from "./plugin/host"
 
 const testLocation = location({ directory: AbsolutePath.make("/project") })
 const locationLayer = Layer.succeed(Location.Service, Location.Service.of(testLocation))
-const global = Global.make({ data: "/data", config: "/config", tmp: "/tmp/opencode" })
-const globalLayer = Layer.succeed(Global.Service, Global.Service.of(global))
 
 const it = testEffect(
   AppNodeBuilder.build(LayerNode.group([Agent.node, Bus.node, Location.node]), [
-    [Global.node, globalLayer],
     [Location.node, locationLayer],
   ]) as unknown as Layer.Layer<unknown, never>,
 )
@@ -125,35 +120,25 @@ describe("Agent", () => {
       const id = Agent.ID.make("custom")
 
       yield* agent.transform((editor) => editor.update(id, () => {}))
-      const info = yield* agent.get(id)
-      expect(info?.permissions.slice(0, Agent.Info.default(id).permissions.length)).toEqual(
-        Agent.Info.default(id).permissions,
-      )
-      expect(Permission.evaluate("external_directory", path.join(global.data, "shell", "*", "*"), info?.permissions ?? []).effect).toBe(
-        "allow",
-      )
-      expect(Permission.evaluate("external_directory", path.join(global.data, "tool-output", "*"), info?.permissions ?? []).effect).toBe(
-        "allow",
-      )
-      expect(Permission.evaluate("external_directory", path.join(global.config, "*"), info?.permissions ?? []).effect).toBe(
-        "allow",
-      )
-      expect(Permission.evaluate("external_directory", path.join(global.tmp, "*"), info?.permissions ?? []).effect).toBe(
-        "allow",
-      )
+      expect(yield* agent.get(id)).toEqual(Agent.Info.default(id))
 
       yield* agent.transform((editor) => editor.remove(id))
       expect(yield* agent.get(id)).toBeUndefined()
     }),
   )
 
-  it.effect("applies managed external directories without opting built-in agents into bash", () =>
+  it.effect("does not ambiently opt built-in agents into bash", () =>
     Effect.gen(function* () {
       const agent = yield* Agent.Service
       yield* AgentPlugin.Plugin.effect(
         host({
           agent: agentHost(agent),
         }),
+      ).pipe(
+        Effect.provideService(
+          Location.Service,
+          Location.Service.of(location({ directory: AbsolutePath.make("/project") })),
+        ),
       )
 
       const agents = yield* agent.list()
@@ -167,20 +152,6 @@ describe("Agent", () => {
         "title",
       ])
       expect((yield* agent.get(Agent.defaultID))?.system).toBeUndefined()
-      const permissions = (yield* agent.get(Agent.defaultID))?.permissions ?? []
-      expect(
-        Permission.evaluate("external_directory", path.join(global.data, "shell", "*", "*"), permissions).effect,
-      ).toBe("allow")
-      expect(
-        Permission.evaluate("external_directory", path.join(global.data, "tool-output", "*"), permissions).effect,
-      ).toBe("allow")
-      expect(Permission.evaluate("external_directory", path.join(global.config, "*"), permissions).effect).toBe("allow")
-      expect(Permission.evaluate("external_directory", path.join(global.tmp, "*"), permissions).effect).toBe("allow")
-      const explore = yield* agent.get(Agent.ID.make("explore"))
-      expect(Permission.evaluate("read", ".env", explore?.permissions ?? []).effect).toBe("ask")
-      expect(Permission.evaluate("read", ".env.local", explore?.permissions ?? []).effect).toBe("ask")
-      expect(Permission.evaluate("read", ".env.example", explore?.permissions ?? []).effect).toBe("allow")
-      expect(Permission.evaluate("read", "src/index.ts", explore?.permissions ?? []).effect).toBe("allow")
       for (const item of agents) {
         expect(item.permissions.some((rule) => rule.action === "bash" && rule.effect !== "deny")).toBe(false)
       }
@@ -194,6 +165,11 @@ describe("Agent", () => {
         host({
           agent: agentHost(agent),
         }),
+      ).pipe(
+        Effect.provideService(
+          Location.Service,
+          Location.Service.of(location({ directory: AbsolutePath.make("/project") })),
+        ),
       )
 
       yield* Effect.forEach(["general", "explore"], (id) =>

packages/core/test/config/agent.test.ts

@@ -20,13 +20,10 @@ import { agentHost, host } from "../plugin/host"
 
 const it = testEffect(AppNodeBuilder.build(LayerNode.group([Agent.node, Bus.node, FSUtil.node, Global.node])))
 const decode = Schema.decodeUnknownSync(Config.Info)
-const defaultPermissions = (global: Global.Interface): Permission.Ruleset => [
-  ...Agent.Info.default(Agent.ID.make("test")).permissions,
-  { action: "external_directory", resource: path.join(global.data, "shell", "*", "*"), effect: "allow" },
-  { action: "external_directory", resource: path.join(global.data, "tool-output", "*"), effect: "allow" },
-  { action: "external_directory", resource: path.join(global.tmp, "*"), effect: "allow" },
-  { action: "external_directory", resource: path.join(global.config, "*"), effect: "allow" },
-]
+const defaultPermissions = [
+  { action: "*", resource: "*", effect: "allow" },
+  { action: "external_directory", resource: "*", effect: "ask" },
+] satisfies Permission.Ruleset
 
 test("rejects named agent color tokens", () => {
   expect(() => decode({ agents: { reviewer: { color: "warning" } } })).toThrow()
@@ -61,7 +58,6 @@ describe("ConfigAgentPlugin.Plugin", () => {
   it.effect("applies all global permissions before agent-specific permissions", () =>
     Effect.gen(function* () {
       const agents = yield* Agent.Service
-      const global = yield* Global.Service
       const build = Agent.ID.make("build")
       yield* agents.transform((editor) =>
         editor.update(build, (agent) => {
@@ -114,7 +110,7 @@ describe("ConfigAgentPlugin.Plugin", () => {
       const buildAgent = yield* agents.get(build)
       if (!buildAgent) throw new Error("expected configured build agent")
       expect(buildAgent.permissions).toEqual([
-        ...defaultPermissions(global),
+        ...defaultPermissions,
         { action: "bash", resource: "*", effect: "allow" },
         { action: "bash", resource: "*", effect: "ask" },
         { action: "read", resource: "*", effect: "allow" },
@@ -132,7 +128,7 @@ describe("ConfigAgentPlugin.Plugin", () => {
         model: { providerID: "openrouter", id: "openai/gpt-5", variant: "high" },
       })
       expect(reviewer.permissions).toEqual([
-        ...defaultPermissions(global),
+        ...defaultPermissions,
         { action: "bash", resource: "*", effect: "ask" },
         { action: "read", resource: "*", effect: "allow" },
         { action: "edit", resource: "*", effect: "deny" },
@@ -140,7 +136,7 @@ describe("ConfigAgentPlugin.Plugin", () => {
       ])
       expect(Permission.evaluate("read", "README.md", reviewer.permissions).effect).toBe("deny")
       expect((yield* agents.get(Agent.ID.make("late")))?.permissions).toEqual([
-        ...defaultPermissions(global),
+        ...defaultPermissions,
         { action: "bash", resource: "*", effect: "ask" },
         { action: "read", resource: "*", effect: "allow" },
         { action: "edit", resource: "*", effect: "allow" },
@@ -274,7 +270,6 @@ Use native v2 fields.`,
             await fs.writeFile(path.join(tmp.path, "modes", "plan.md"), "Make a plan.")
           })
           const agents = yield* Agent.Service
-          const global = yield* Global.Service
           const entries = [
             new Config.Document({
               type: "document",
@@ -292,13 +287,13 @@ Use native v2 fields.`,
             system: "Review carefully.",
             description: "Markdown description",
             request: { body: { temperature: 0.5 } },
-            permissions: [...defaultPermissions(global), { action: "edit", resource: "*", effect: "deny" }],
+            permissions: [...defaultPermissions, { action: "edit", resource: "*", effect: "deny" }],
           })
           expect(yield* agents.get(Agent.ID.make("team/helper"))).toMatchObject({ system: "Help the team." })
           expect(yield* agents.get(Agent.ID.make("native"))).toMatchObject({
             system: "Use native v2 fields.",
             request: { headers: { "x-agent": "native" }, body: { effort: "high" } },
-            permissions: [...defaultPermissions(global), { action: "edit", resource: "*", effect: "deny" }],
+            permissions: [...defaultPermissions, { action: "edit", resource: "*", effect: "deny" }],
           })
           expect(yield* agents.get(Agent.ID.make("disabled"))).toBeUndefined()
           expect(yield* agents.get(Agent.ID.make("empty"))).toBeUndefined()

packages/core/test/global.test.ts

@@ -5,8 +5,8 @@ import path from "path"
 import { Global } from "@opencode-ai/util/global"
 
 describe("global paths", () => {
-  test("tmp path is the canonical system temp directory", async () => {
-    expect(Global.Path.tmp).toBe(await fs.realpath(path.join(os.tmpdir(), "opencode")))
+  test("tmp path is under the system temp directory", () => {
+    expect(Global.Path.tmp).toBe(path.join(os.tmpdir(), "opencode"))
     expect(Global.make().tmp).toBe(Global.Path.tmp)
   })
 

packages/core/test/instructions/builtins.test.ts

@@ -29,7 +29,7 @@ const locationLayer = Layer.succeed(
 const it = testEffect(
   AppNodeBuilder.build(InstructionBuiltIns.node, [
     [Location.node, locationLayer],
-    [Global.node, Global.layerWith({ config: "/global", tmp: "/temporary" })],
+    [Global.node, Global.layerWith({ config: "/global" })],
   ]),
 )
 
@@ -49,7 +49,6 @@ describe("InstructionBuiltIns", () => {
           `  Workspace root folder: ${projectDirectory}`,
           "  Is directory a git repo: yes",
           `  Platform: ${process.platform}`,
-          "  Use /temporary for temporary work outside the workspace; it already exists and is pre-approved for external directory access.",
           "</env>",
           "",
           `Today's date: ${localDate(timestamp)}`,

packages/core/test/plugin/promise.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect } from "bun:test"
 import { Message, SystemPart } from "@opencode-ai/ai"
-import { DateTime, Effect, Schema } from "effect"
+import { DateTime, Deferred, Effect, Fiber, Schema } from "effect"
 import { Agent } from "@opencode-ai/core/agent"
 import { Catalog } from "@opencode-ai/core/catalog"
 import { Model } from "@opencode-ai/core/model"
@@ -148,7 +148,9 @@ describe("fromPromise", () => {
             expect((await ctx.agent.get({ agentID: Agent.ID.make("reviewer") })).data).toMatchObject({
               description: "Reviews code",
             })
-            await expect(ctx.agent.get({ agentID: Agent.ID.make("missing") })).rejects.toThrow("Agent not found: missing")
+            await expect(ctx.agent.get({ agentID: Agent.ID.make("missing") })).rejects.toThrow(
+              "Agent not found: missing",
+            )
             const models = (await ctx.catalog.model.list()).data
             expect(models.find((model) => model.providerID === "test" && model.id === "alias")).toMatchObject({
               modelID: "gpt-5",
@@ -221,6 +223,76 @@ describe("fromPromise", () => {
     }),
   )
 
+  it.effect("adapts promise session HTTP hooks", () =>
+    Effect.gen(function* () {
+      const plugin = yield* Plugin.Service
+      const hooks = yield* PluginHooks.Service
+      const host = yield* PluginHost.make(plugin)
+      yield* PluginPromise.fromPromise(
+        define({
+          id: "promise-session-http",
+          setup: async (ctx) => {
+            await ctx.session.hook("http", async (_event, request, next) => {
+              request.headers.set("x-hook", "promise")
+              const response = await next(request)
+              return new Response(`${await response.text()}-response`)
+            })
+            await ctx.session.hook("http", async (_event, request, next) => {
+              const response = await next(request)
+              return new Response(`${await response.text()}-outer`)
+            })
+          },
+        }),
+      ).effect(host)
+      const event: PluginHooks.Domains["session"]["http"] = {
+        sessionID: Session.ID.make("ses_promise_session_http"),
+        agent: Agent.ID.make("build"),
+        model: Model.Ref.make({ providerID: Provider.ID.make("test"), id: Model.ID.make("model") }),
+        request: (input) => Effect.succeed(new Response(input.headers.get("x-hook") ?? "missing")),
+      }
+
+      yield* hooks.trigger("session", "http", event)
+      const response = yield* event.request(new Request("https://provider.test"))
+
+      expect(yield* Effect.promise(() => response.text())).toBe("promise-response-outer")
+    }),
+  )
+
+  it.effect("interrupts the Effect request through a promise session HTTP hook", () =>
+    Effect.gen(function* () {
+      const plugin = yield* Plugin.Service
+      const hooks = yield* PluginHooks.Service
+      const host = yield* PluginHost.make(plugin)
+      yield* PluginPromise.fromPromise(
+        define({
+          id: "promise-session-http-interrupt",
+          setup: async (ctx) => {
+            await ctx.session.hook("http", (_event, request, next) => next(request))
+          },
+        }),
+      ).effect(host)
+      const started = yield* Deferred.make<void>()
+      const interrupted = yield* Deferred.make<void>()
+      const event: PluginHooks.Domains["session"]["http"] = {
+        sessionID: Session.ID.make("ses_promise_session_http_interrupt"),
+        agent: Agent.ID.make("build"),
+        model: Model.Ref.make({ providerID: Provider.ID.make("test"), id: Model.ID.make("model") }),
+        request: () =>
+          Deferred.succeed(started, undefined).pipe(
+            Effect.andThen(Effect.never),
+            Effect.onInterrupt(() => Deferred.succeed(interrupted, undefined)),
+          ),
+      }
+
+      yield* hooks.trigger("session", "http", event)
+      const fiber = yield* event.request(new Request("https://provider.test")).pipe(Effect.forkChild)
+      yield* Deferred.await(started)
+      yield* Fiber.interrupt(fiber)
+
+      expect(yield* Deferred.isDone(interrupted)).toBeTrue()
+    }),
+  )
+
   it.effect("disposes a hook registration on request", () =>
     Effect.gen(function* () {
       const agents = yield* Agent.Service
@@ -315,19 +387,17 @@ describe("fromPromise", () => {
         id: "promise-tool",
         setup: async (ctx) => {
           await ctx.tool.transform((tools) => {
-            tools.add(
-              {
-                name: "hello",
-                options: { codemode: false },
-                description: "Hello",
-                input: Schema.Struct({ name: Schema.String }),
-                output: Schema.String,
-                execute: async ({ name }, context) => {
-                  await context.progress({ phase: "greeting" })
-                  return { output: `Hello, ${name}!` }
-                },
+            tools.add({
+              name: "hello",
+              options: { codemode: false },
+              description: "Hello",
+              input: Schema.Struct({ name: Schema.String }),
+              output: Schema.String,
+              execute: async ({ name }, context) => {
+                await context.progress({ phase: "greeting" })
+                return { output: `Hello, ${name}!` }
               },
-            )
+            })
           })
         },
       })

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

@@ -29,6 +29,21 @@ function required<T>(value: T | undefined): T {
   return value
 }
 
+const http = Effect.fn(function* (providerID: Provider.ID, url: string) {
+  const event = yield* (yield* PluginHooks.Service).trigger("session", "http", {
+    sessionID: Session.ID.make("ses_test"),
+    agent: Agent.ID.make("build"),
+    model: Model.Ref.make({ providerID, id: Model.ID.make("gpt-5.5") }),
+    request: (input) => {
+      const headers = new Headers(input.headers)
+      headers.set("x-seen-url", input.url)
+      return Effect.succeed(new Response(null, { headers }))
+    },
+  })
+  const response = yield* event.request(new Request(url, { method: "POST", body: "{}" }))
+  return { url: response.headers.get("x-seen-url"), headers: Object.fromEntries(response.headers.entries()) }
+})
+
 describe("OpenAIPlugin", () => {
   it.effect("registers browser and headless ChatGPT OAuth methods", () =>
     Effect.gen(function* () {
@@ -100,33 +115,9 @@ describe("OpenAIPlugin", () => {
       })
       yield* addPlugin()
 
-      const request = yield* (yield* PluginHooks.Service).trigger("session", "request", {
-        sessionID: Session.ID.make("ses_test"),
-        agent: Agent.ID.make("build"),
-        model: Model.Ref.make({ providerID: Provider.ID.openai, id: Model.ID.make("gpt-5.5") }),
-        url: "https://api.openai.com/v1/responses",
-        method: "POST",
-        headers: {},
-        body: "{}",
-      })
-      const custom = yield* (yield* PluginHooks.Service).trigger("session", "request", {
-        sessionID: Session.ID.make("ses_test"),
-        agent: Agent.ID.make("build"),
-        model: Model.Ref.make({ providerID: Provider.ID.make("custom-openai"), id: Model.ID.make("gpt-5.5") }),
-        url: "https://custom.example/v1/responses",
-        method: "POST",
-        headers: {},
-        body: "{}",
-      })
-      const proxy = yield* (yield* PluginHooks.Service).trigger("session", "request", {
-        sessionID: Session.ID.make("ses_test"),
-        agent: Agent.ID.make("build"),
-        model: Model.Ref.make({ providerID: Provider.ID.openai, id: Model.ID.make("gpt-5.5") }),
-        url: "https://proxy.example/v1/responses?region=us",
-        method: "POST",
-        headers: {},
-        body: "{}",
-      })
+      const request = yield* http(Provider.ID.openai, "https://api.openai.com/v1/responses")
+      const custom = yield* http(Provider.ID.make("custom-openai"), "https://custom.example/v1/responses")
+      const proxy = yield* http(Provider.ID.openai, "https://proxy.example/v1/responses?region=us")
 
       const provider = required(yield* catalog.provider.get(Provider.ID.openai))
       expect(provider.package).toBe("@opencode-ai/ai/providers/openai")
@@ -134,7 +125,7 @@ describe("OpenAIPlugin", () => {
       expect(provider.headers).toMatchObject({ "chatgpt-account-id": "acct_123" })
       expect(request.url).toBe("https://chatgpt.com/backend-api/codex/responses")
       expect(request.headers).toMatchObject({ originator: "opencode", "session-id": "ses_test" })
-      expect(custom.headers).toEqual({})
+      expect(custom.headers).not.toHaveProperty("originator")
       expect(proxy.url).toBe("https://proxy.example/v1/responses?region=us")
       expect(proxy.headers).toMatchObject({ originator: "opencode", "session-id": "ses_test" })
       const eligible = required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.5")))
@@ -184,21 +175,13 @@ describe("OpenAIPlugin", () => {
       })
       yield* addPlugin()
 
-      const request = yield* (yield* PluginHooks.Service).trigger("session", "request", {
-        sessionID: Session.ID.make("ses_test"),
-        agent: Agent.ID.make("build"),
-        model: Model.Ref.make({ providerID: Provider.ID.openai, id: Model.ID.make("gpt-5.5") }),
-        url: "https://api.openai.com/v1/responses",
-        method: "POST",
-        headers: {},
-        body: "{}",
-      })
+      const request = yield* http(Provider.ID.openai, "https://api.openai.com/v1/responses")
 
       const model = required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.5")))
       expect(model.package).toBe("@opencode-ai/ai/providers/openai")
       expect(model.enabled).toBe(true)
       expect(model.limit).toEqual({ context: 1_050_000, input: 922_000, output: 128_000 })
-      expect(request.headers).toEqual({})
+      expect(request.headers).not.toHaveProperty("originator")
       expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-4.1"))).enabled).toBe(true)
     }),
   )

packages/core/test/session-runner-recorded.test.ts

@@ -1,4 +1,5 @@
 import { HttpRecorder } from "@opencode-ai/http-recorder"
+import type { SessionHookRegistration } from "@opencode-ai/plugin/effect/session"
 import * as OpenAIChat from "@opencode-ai/ai/protocols/openai-chat"
 import { Auth, LLMClient, RequestExecutor } from "@opencode-ai/ai/route"
 import { Catalog } from "@opencode-ai/core/catalog"
@@ -41,6 +42,7 @@ import { SystemPromptPlugin } from "@opencode-ai/core/plugin/system-prompt"
 import { describe, expect } from "bun:test"
 import { eq } from "drizzle-orm"
 import { Effect, Layer, Stream } from "effect"
+import { HttpClient, HttpClientResponse } from "effect/unstable/http"
 import path from "node:path"
 import { testEffect } from "./lib/effect"
 import { agentHost, catalogHost, host } from "./plugin/host"
@@ -104,37 +106,39 @@ const promptCatalog = Layer.mock(Catalog.Service, {
     small: () => Effect.succeed(undefined),
   },
 })
-const runnerLayer = AppNodeBuilder.build(SessionRunnerLLM.node, [
-  [Snapshot.node, Snapshot.noopLayer],
-  [LayerNodePlatform.llmClient, client],
-  [SessionRunnerModel.node, models],
-  [InstructionBuiltIns.node, systemContext],
-  [InstructionDiscovery.node, instructionContext],
-  [Location.node, Location.boundNode({ directory: AbsolutePath.make("/project") })],
-  [SkillInstructions.node, skillInstructions],
-  [ReferenceInstructions.node, referenceInstructions],
-  [McpInstructions.node, mcpInstructions],
-  [Config.node, config],
-  [Permission.node, permission],
-  [PluginSupervisor.node, pluginSupervisor],
-])
-const execution = Layer.effect(
-  SessionExecution.Service,
-  Effect.gen(function* () {
-    const sessionRunner = yield* SessionRunner.Service
-    const coordinator = yield* SessionRunCoordinator.make<Session.ID, SessionRunner.RunError>({
-      drain: (sessionID, force) => sessionRunner.drain({ sessionID, force }),
-    })
-    return SessionExecution.Service.of({
-      active: coordinator.active,
-      resume: coordinator.run,
-      wake: coordinator.wake,
-      interrupt: coordinator.interrupt,
-      awaitIdle: coordinator.awaitIdle,
-    })
-  }),
-).pipe(Layer.provide(runnerLayer))
-const it = testEffect(
+const runnerLayer = (llmClient: Layer.Layer<typeof LLMClient.Service>) =>
+  AppNodeBuilder.build(SessionRunnerLLM.node, [
+    [Snapshot.node, Snapshot.noopLayer],
+    [LayerNodePlatform.llmClient, llmClient],
+    [SessionRunnerModel.node, models],
+    [InstructionBuiltIns.node, systemContext],
+    [InstructionDiscovery.node, instructionContext],
+    [Location.node, Location.boundNode({ directory: AbsolutePath.make("/project") })],
+    [SkillInstructions.node, skillInstructions],
+    [ReferenceInstructions.node, referenceInstructions],
+    [McpInstructions.node, mcpInstructions],
+    [Config.node, config],
+    [Permission.node, permission],
+    [PluginSupervisor.node, pluginSupervisor],
+  ])
+const execution = (llmClient: Layer.Layer<typeof LLMClient.Service>) =>
+  Layer.effect(
+    SessionExecution.Service,
+    Effect.gen(function* () {
+      const sessionRunner = yield* SessionRunner.Service
+      const coordinator = yield* SessionRunCoordinator.make<Session.ID, SessionRunner.RunError>({
+        drain: (sessionID, force) => sessionRunner.drain({ sessionID, force }),
+      })
+      return SessionExecution.Service.of({
+        active: coordinator.active,
+        resume: coordinator.run,
+        wake: coordinator.wake,
+        interrupt: coordinator.interrupt,
+        awaitIdle: coordinator.awaitIdle,
+      })
+    }),
+  ).pipe(Layer.provide(runnerLayer(llmClient)))
+const testLayer = (llmClient: Layer.Layer<typeof LLMClient.Service>) =>
   AppNodeBuilder.build(
     LayerNode.group([
       Database.node,
@@ -156,7 +160,7 @@ const it = testEffect(
       Session.node,
     ]),
     [
-      [LayerNodePlatform.llmClient, client],
+      [LayerNodePlatform.llmClient, llmClient],
       [Permission.node, permission],
       [Catalog.node, promptCatalog],
       [SessionRunnerModel.node, models],
@@ -168,10 +172,10 @@ const it = testEffect(
       [Config.node, config],
       [Snapshot.node, Snapshot.noopLayer],
       [PluginSupervisor.node, pluginSupervisor],
-      [SessionExecution.node, execution],
+      [SessionExecution.node, execution(llmClient)],
     ],
-  ),
-)
+  )
+const it = testEffect(testLayer(client))
 const sessionID = Session.ID.make("ses_runner_recorded")
 
 describe("SessionRunnerLLM recorded", () => {
@@ -189,7 +193,12 @@ describe("SessionRunnerLLM recorded", () => {
       const pluginHost = host({
         agent: agentHost(agents),
         catalog: catalogHost(catalog),
-        session: { hook: (name, callback) => hooks.register("session", name, callback) },
+        session: {
+          hook: (...registration: SessionHookRegistration) => {
+            if (registration[0] === "http") return Effect.die("unused session HTTP hook")
+            return hooks.register("session", ...registration)
+          },
+        },
       })
       yield* Effect.forEach(SystemPromptPlugin.Plugins, (plugin) => plugin.effect(pluginHost), { discard: true })
       const { db } = yield* Database.Service
@@ -247,3 +256,99 @@ describe("SessionRunnerLLM recorded", () => {
     }),
   )
 })
+
+describe("SessionModelRequest HTTP bridge", () => {
+  const bodies: Uint8Array[] = []
+  const methods: string[] = []
+  const response = [
+    'data: {"id":"chatcmpl_test","object":"chat.completion.chunk","created":0,"model":"gpt-4o-mini","choices":[{"index":0,"delta":{"role":"assistant","content":"Hello!"},"finish_reason":null}]}',
+    'data: {"id":"chatcmpl_test","object":"chat.completion.chunk","created":0,"model":"gpt-4o-mini","choices":[{"index":0,"delta":{},"finish_reason":"stop"}]}',
+    "data: [DONE]",
+    "",
+  ].join("\n\n")
+  const transport = Layer.succeed(
+    HttpClient.HttpClient,
+    HttpClient.make((request) =>
+      Effect.sync(() => {
+        if (request.body._tag !== "Uint8Array") throw new Error(`Unexpected request body: ${request.body._tag}`)
+        methods.push(request.method)
+        bodies.push(request.body.body.slice())
+        return HttpClientResponse.fromWeb(
+          request,
+          new Response(response, { headers: { "content-type": "text/event-stream" } }),
+        )
+      }),
+    ),
+  )
+  const retryIt = testEffect(
+    testLayer(LLMClient.layer.pipe(Layer.provide(RequestExecutor.layer.pipe(Layer.provide(transport))))),
+  )
+
+  retryIt.effect("lets an Effect plugin send the same POST Request twice", () =>
+    Effect.gen(function* () {
+      bodies.length = 0
+      methods.length = 0
+      const agents = yield* Agent.Service
+      const catalog = yield* Catalog.Service
+      const hooks = yield* PluginHooks.Service
+      yield* agents.transform((draft) =>
+        draft.update(Agent.ID.make("build"), (agent) => {
+          agent.mode = "primary"
+          agent.permissions.push({ action: "execute", resource: "*", effect: "deny" })
+        }),
+      )
+      const pluginHost = host({
+        agent: agentHost(agents),
+        catalog: catalogHost(catalog),
+        session: {
+          hook: (...registration: SessionHookRegistration) => {
+            if (registration[0] !== "http") return hooks.register("session", ...registration)
+            const middleware = registration[1]
+            return hooks.register("session", "http", (event) =>
+              Effect.sync(() => {
+                const next = event.request
+                event.request = (request) => middleware(event, request, next)
+              }),
+            )
+          },
+        },
+      })
+      yield* pluginHost.session.hook("http", (_context, request, next) =>
+        Effect.gen(function* () {
+          yield* next(request).pipe(Effect.flatMap((response) => Effect.promise(() => response.text())))
+          return yield* next(request)
+        }),
+      )
+      yield* Effect.forEach(SystemPromptPlugin.Plugins, (plugin) => plugin.effect(pluginHost), { discard: true })
+      const { db } = yield* Database.Service
+      yield* db
+        .insert(ProjectTable)
+        .values({ id: Project.ID.global, worktree: AbsolutePath.make("/project"), sandboxes: [] })
+        .onConflictDoNothing()
+        .run()
+        .pipe(Effect.orDie)
+      const retrySessionID = Session.ID.make("ses_model_request_http_retry")
+      yield* db
+        .insert(SessionTable)
+        .values({
+          id: retrySessionID,
+          project_id: Project.ID.global,
+          slug: "test",
+          directory: "/project",
+          title: "test",
+          version: "test",
+        })
+        .run()
+        .pipe(Effect.orDie)
+      const session = yield* Session.Service
+      yield* session.prompt({ sessionID: retrySessionID, text: "Say hello.", resume: false })
+
+      yield* session.resume(retrySessionID)
+
+      expect(methods).toEqual(["POST", "POST"])
+      expect(bodies).toHaveLength(2)
+      expect(bodies[0]?.byteLength).toBeGreaterThan(0)
+      expect(bodies[1]).toEqual(bodies[0])
+    }),
+  )
+})

packages/core/test/session-runner.test.ts

@@ -14,6 +14,7 @@ import {
 } from "@opencode-ai/ai"
 import * as OpenAIChat from "@opencode-ai/ai/protocols/openai-chat"
 import { TestLLM } from "@opencode-ai/ai/testing"
+import type { SessionHookRegistration } from "@opencode-ai/plugin/effect/session"
 import { Catalog } from "@opencode-ai/core/catalog"
 import { Database } from "@opencode-ai/core/database/database"
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
@@ -474,7 +475,12 @@ const setup = Effect.gen(function* () {
   const pluginHost = host({
     agent: agentHost(agents),
     catalog: catalogHost(catalog),
-    session: { hook: (name, callback) => hooks.register("session", name, callback) },
+    session: {
+      hook: (...registration: SessionHookRegistration) => {
+        if (registration[0] === "http") return Effect.die("unused session HTTP hook")
+        return hooks.register("session", ...registration)
+      },
+    },
   })
   yield* Effect.forEach(SystemPromptPlugin.Plugins, (plugin) => plugin.effect(pluginHost), {
     discard: true,
@@ -887,27 +893,6 @@ describe("SessionRunnerLLM", () => {
     }),
   )
 
-  it.effect("executes a tool renamed by a session context hook", () =>
-    Effect.gen(function* () {
-      const session = yield* setup
-      const hooks = yield* PluginHooks.Service
-      yield* hooks.register("session", "context", (event) =>
-        Effect.sync(() => {
-          event.tools.renamed_echo = event.tools.echo!
-          delete event.tools.echo
-        }),
-      )
-      yield* admit(session, "Use the renamed tool")
-      yield* TestLLM.push(TestLLM.tool("call-renamed", "renamed_echo", { text: "renamed" }), [])
-
-      yield* session.resume(sessionID)
-
-      expect(requests[0]?.tools.map((tool) => tool.name)).toContain("renamed_echo")
-      expect(requests[0]?.tools.map((tool) => tool.name)).not.toContain("echo")
-      expect(executions).toEqual(["renamed"])
-    }),
-  )
-
   it.effect("advertises and executes a location registered tool", () =>
     Effect.gen(function* () {
       const session = yield* setup

packages/core/test/vcs-hg.test.ts

@@ -160,7 +160,6 @@ describeHg("Vcs mercurial", () => {
           await commitAll(directory, "feature change")
         })
         const diff = yield* vcs.diff("branch")
-        expect(yield* vcs.info()).toEqual({ branch: { current: "feature", default: "default" } })
         expect(diff.map((item) => ({ file: item.file, status: item.status }))).toEqual([
           { file: "file.txt", status: "modified" },
         ])

packages/core/test/vcs.test.ts

@@ -53,7 +53,6 @@ describe("Vcs", () => {
     withTmp((directory) =>
       Effect.gen(function* () {
         const vcs = yield* Vcs.Service
-        expect(yield* vcs.info()).toEqual({ branch: {} })
         expect(yield* vcs.status()).toEqual([])
         expect(yield* vcs.diff("working")).toEqual([])
         expect(yield* vcs.diff("branch")).toEqual([])
@@ -164,7 +163,6 @@ describe("Vcs", () => {
           await commitAll(directory, "feature change")
         })
         const diff = yield* vcs.diff("branch")
-        expect(yield* vcs.info()).toEqual({ branch: { current: "feature", default: "main" } })
         expect(diff.map((item) => ({ file: item.file, status: item.status }))).toEqual([
           { file: "file.txt", status: "modified" },
         ])

packages/plugin/src/effect/session.ts

@@ -1,11 +1,10 @@
 import type { SessionApi } from "@opencode-ai/client/effect/api"
 import type { Message, SystemPart } from "@opencode-ai/ai"
-import type { HttpRequest } from "@opencode-ai/ai/route"
 import type { Agent } from "@opencode-ai/schema/agent"
 import type { Model } from "@opencode-ai/schema/model"
 import type { Session } from "@opencode-ai/schema/session"
-import type { JsonSchema } from "effect"
-import type { Hooks } from "./registration.js"
+import type { Effect, JsonSchema, Scope } from "effect"
+import type { Registration } from "./registration.js"
 
 export interface SessionContext {
   readonly sessionID: Session.ID
@@ -16,20 +15,39 @@ export interface SessionContext {
   tools: Record<string, { description: string; input: JsonSchema.JsonSchema }>
 }
 
-export interface SessionRequest extends HttpRequest {
+export interface SessionHttpContext {
   readonly sessionID: Session.ID
   readonly agent: Agent.ID
   readonly model: Model.Ref
 }
 
+export type SessionHttpMiddleware = (
+  context: SessionHttpContext,
+  request: Request,
+  next: (request: Request) => Effect.Effect<Response, Error>,
+) => Effect.Effect<Response, Error>
+
 export interface SessionHooks {
   readonly context: SessionContext
-  readonly request: SessionRequest
+}
+
+export type SessionHookRegistration =
+  | {
+      [Name in keyof SessionHooks]: [name: Name, callback: (event: SessionHooks[Name]) => Effect.Effect<void>]
+    }[keyof SessionHooks]
+  | [name: "http", middleware: SessionHttpMiddleware]
+
+export interface SessionHook {
+  <Name extends keyof SessionHooks>(
+    name: Name,
+    callback: (event: SessionHooks[Name]) => Effect.Effect<void>,
+  ): Effect.Effect<Registration, never, Scope.Scope>
+  (name: "http", middleware: SessionHttpMiddleware): Effect.Effect<Registration, never, Scope.Scope>
 }
 
 export type SessionDomain = Pick<
   SessionApi<unknown>,
   "create" | "get" | "prompt" | "generate" | "command" | "synthetic" | "interrupt" | "rename" | "wait"
 > & {
-  readonly hook: Hooks<SessionHooks>
+  readonly hook: SessionHook
 }

packages/plugin/src/promise/session.ts

@@ -1,11 +1,10 @@
 import type { SessionApi } from "@opencode-ai/client/promise/api"
 import type { Message, SystemPart } from "@opencode-ai/ai"
-import type { HttpRequest } from "@opencode-ai/ai/route"
 import type { Agent } from "@opencode-ai/schema/agent"
 import type { Model } from "@opencode-ai/schema/model"
 import type { Session } from "@opencode-ai/schema/session"
 import type { JsonSchema } from "effect"
-import type { Hooks } from "./registration.js"
+import type { Registration } from "./registration.js"
 
 export interface SessionContext {
   readonly sessionID: Session.ID
@@ -16,20 +15,39 @@ export interface SessionContext {
   tools: Record<string, { description: string; input: JsonSchema.JsonSchema }>
 }
 
-export interface SessionRequest extends HttpRequest {
+export interface SessionHttpContext {
   readonly sessionID: Session.ID
   readonly agent: Agent.ID
   readonly model: Model.Ref
 }
 
+export type SessionHttpMiddleware = (
+  context: SessionHttpContext,
+  request: Request,
+  next: (request: Request) => Promise<Response>,
+) => Promise<Response> | Response
+
 export interface SessionHooks {
   readonly context: SessionContext
-  readonly request: SessionRequest
+}
+
+export type SessionHookRegistration =
+  | {
+      [Name in keyof SessionHooks]: [name: Name, callback: (event: SessionHooks[Name]) => Promise<void> | void]
+    }[keyof SessionHooks]
+  | [name: "http", middleware: SessionHttpMiddleware]
+
+export interface SessionHook {
+  <Name extends keyof SessionHooks>(
+    name: Name,
+    callback: (event: SessionHooks[Name]) => Promise<void> | void,
+  ): Promise<Registration>
+  (name: "http", middleware: SessionHttpMiddleware): Promise<Registration>
 }
 
 export type SessionDomain = Pick<
   SessionApi,
   "create" | "get" | "prompt" | "generate" | "command" | "synthetic" | "interrupt"
 > & {
-  readonly hook: Hooks<SessionHooks>
+  readonly hook: SessionHook
 }

packages/protocol/openapi.json

@@ -851,16 +851,6 @@
                       }
                     ]
                   },
-                  "title": {
-                    "anyOf": [
-                      {
-                        "type": "string"
-                      },
-                      {
-                        "type": "null"
-                      }
-                    ]
-                  },
                   "agent": {
                     "anyOf": [
                       {
@@ -11311,104 +11301,6 @@
         }
       }
     },
-    "/api/vcs": {
-      "get": {
-        "tags": [
-          "vcs"
-        ],
-        "operationId": "v2.vcs.get",
-        "parameters": [
-          {
-            "name": "location",
-            "in": "query",
-            "schema": {
-              "anyOf": [
-                {
-                  "type": "object",
-                  "properties": {
-                    "directory": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    },
-                    "workspace": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    }
-                  },
-                  "additionalProperties": false
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "required": false,
-            "style": "deepObject",
-            "explode": true
-          }
-        ],
-        "security": [],
-        "responses": {
-          "200": {
-            "description": "Success",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "type": "object",
-                  "properties": {
-                    "location": {
-                      "$ref": "#/components/schemas/Location.Info"
-                    },
-                    "data": {
-                      "$ref": "#/components/schemas/Vcs.Info"
-                    }
-                  },
-                  "required": [
-                    "location",
-                    "data"
-                  ],
-                  "additionalProperties": false
-                }
-              }
-            }
-          },
-          "400": {
-            "description": "InvalidRequestError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "#/components/schemas/InvalidRequestError"
-                }
-              }
-            }
-          },
-          "401": {
-            "description": "UnauthorizedError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "#/components/schemas/UnauthorizedError"
-                }
-              }
-            }
-          }
-        },
-        "description": "Get current and default branch information for the requested location.",
-        "summary": "VCS info"
-      }
-    },
     "/api/vcs/status": {
       "get": {
         "tags": [
@@ -12140,15 +12032,11 @@
               },
               "directory": {
                 "type": "string"
-              },
-              "canonical": {
-                "type": "string"
               }
             },
             "required": [
               "id",
-              "directory",
-              "canonical"
+              "directory"
             ],
             "additionalProperties": false
           }
@@ -12610,6 +12498,7 @@
           "cost",
           "tokens",
           "time",
+          "title",
           "location"
         ],
         "additionalProperties": false
@@ -13948,15 +13837,6 @@
           },
           "message": {
             "type": "string"
-          },
-          "status": {
-            "type": "integer",
-            "allOf": [
-              {
-                "minimum": 100,
-                "maximum": 599
-              }
-            ]
           }
         },
         "required": [
@@ -20885,7 +20765,7 @@
           "id": {
             "type": "string"
           },
-          "canonical": {
+          "worktree": {
             "type": "string"
           },
           "vcs": {
@@ -20912,7 +20792,7 @@
         },
         "required": [
           "id",
-          "canonical",
+          "worktree",
           "time",
           "sandboxes"
         ],
@@ -20926,15 +20806,11 @@
           },
           "directory": {
             "type": "string"
-          },
-          "canonical": {
-            "type": "string"
           }
         },
         "required": [
           "id",
-          "directory",
-          "canonical"
+          "directory"
         ],
         "additionalProperties": false
       },
@@ -22569,6 +22445,7 @@
           "slug",
           "projectID",
           "directory",
+          "title",
           "version",
           "time"
         ],
@@ -29250,30 +29127,6 @@
         ],
         "additionalProperties": false
       },
-      "Vcs.Branch": {
-        "type": "object",
-        "properties": {
-          "current": {
-            "type": "string"
-          },
-          "default": {
-            "type": "string"
-          }
-        },
-        "additionalProperties": false
-      },
-      "Vcs.Info": {
-        "type": "object",
-        "properties": {
-          "branch": {
-            "$ref": "#/components/schemas/Vcs.Branch"
-          }
-        },
-        "required": [
-          "branch"
-        ],
-        "additionalProperties": false
-      },
       "Vcs.FileStatus": {
         "type": "object",
         "properties": {

packages/protocol/src/groups/vcs.ts

@@ -13,20 +13,6 @@ const DiffQuery = Schema.Struct({
 })
 
 export const VcsGroup = HttpApiGroup.make("server.vcs")
-  .add(
-    HttpApiEndpoint.get("vcs.get", "/api/vcs", {
-      query: LocationQuery,
-      success: Location.response(Vcs.Info),
-    })
-      .annotateMerge(locationQueryOpenApi)
-      .annotateMerge(
-        OpenApi.annotations({
-          identifier: "v2.vcs.get",
-          summary: "VCS info",
-          description: "Get current and default branch information for the requested location.",
-        }),
-      ),
-  )
   .add(
     HttpApiEndpoint.get("vcs.status", "/api/vcs/status", {
       query: LocationQuery,

packages/schema/src/agent.ts

@@ -46,9 +46,6 @@ export const Info = Schema.Struct({
           permissions: [
             { action: "*", resource: "*", effect: "allow" },
             { action: "external_directory", resource: "*", effect: "ask" },
-            { action: "read", resource: "*.env", effect: "ask" },
-            { action: "read", resource: "*.env.*", effect: "ask" },
-            { action: "read", resource: "*.env.example", effect: "allow" },
           ],
         }) satisfies Info,
     })),

packages/schema/src/vcs.ts

@@ -1,18 +1,7 @@
 export * as Vcs from "./vcs.js"
 
 import { Schema } from "effect"
-import { NonNegativeInt, optional } from "./schema.js"
-
-export const Branch = Schema.Struct({
-  current: optional(Schema.String),
-  default: optional(Schema.String),
-}).annotate({ identifier: "Vcs.Branch" })
-export interface Branch extends Schema.Schema.Type<typeof Branch> {}
-
-export const Info = Schema.Struct({
-  branch: Branch,
-}).annotate({ identifier: "Vcs.Info" })
-export interface Info extends Schema.Schema.Type<typeof Info> {}
+import { NonNegativeInt } from "./schema.js"
 
 export const Mode = Schema.Literals(["working", "branch"]).annotate({ identifier: "Vcs.Mode" })
 export type Mode = typeof Mode.Type

packages/schema/test/contract-hygiene.test.ts

@@ -16,7 +16,6 @@ import { FileDiff } from "../src/file-diff.js"
 import { Money } from "../src/money.js"
 import { Skill } from "../src/skill.js"
 import { Shell } from "../src/shell.js"
-import { Vcs } from "../src/vcs.js"
 import { PersistedRevert } from "../src/session-revert.js"
 import { AbsolutePath, optional } from "../src/schema.js"
 
@@ -135,10 +134,6 @@ describe("contract hygiene", () => {
     expect(Pty.ID.create()).toStartWith("pty_")
   })
 
-  test("VCS info omits unavailable branch names", () => {
-    expect(Schema.encodeSync(Vcs.Info)({ branch: { current: undefined, default: undefined } })).toEqual({ branch: {} })
-  })
-
   test("reusable public identifiers are stable and unique", () => {
     const identifiers = [
       Agent.Color,
@@ -171,8 +166,6 @@ describe("contract hygiene", () => {
       SessionPending.SyntheticData,
       SessionPending.User,
       SessionPending.Synthetic,
-      Vcs.Branch,
-      Vcs.Info,
     ].map((schema) => schema.ast.annotations?.identifier)
 
     expect(identifiers.every((identifier) => typeof identifier === "string")).toBe(true)

packages/server/src/handlers/vcs.ts

@@ -7,14 +7,6 @@ import { response } from "../location"
 export const VcsHandler = HttpApiBuilder.group(Api, "server.vcs", (handlers) =>
   Effect.gen(function* () {
     return handlers
-      .handle("vcs.get", () =>
-        response(
-          Effect.gen(function* () {
-            const vcs = yield* Vcs.Service
-            return yield* vcs.info()
-          }),
-        ),
-      )
       .handle("vcs.status", () =>
         response(
           Effect.gen(function* () {

packages/tui/src/mini/tool.ts

@@ -125,6 +125,7 @@ type ToolName =
   | "webfetch"
   | "websearch"
   | "skill"
+  | "plan_exit"
 
 type ToolRule = {
   view: ToolView
@@ -515,6 +516,15 @@ function runLsp(p: ToolProps): ToolInline {
   }
 }
 
+function runPlanExit(p: ToolProps): ToolInline {
+  return {
+    icon: "→",
+    title: "Switching to build agent",
+    mode: "block",
+    body: p.frame.status === "completed" ? p.frame.output : undefined,
+  }
+}
+
 function patchTitle(file: PatchFile, directory?: string): string {
   if (file.status === "added") {
     return `# Created ${toolPath(file.file, { directory })}`
@@ -1067,6 +1077,16 @@ const TOOL_RULES = {
       start: scrollSkillStart,
     },
   },
+  plan_exit: {
+    view: {
+      output: true,
+      final: false,
+    },
+    run: runPlanExit,
+    scroll: {
+      start: () => "",
+    },
+  },
 } as const satisfies ToolRegistry
 
 function key(name: string): name is ToolName {

packages/util/src/global.ts

@@ -13,8 +13,6 @@ const config = path.join(xdgConfig!, app)
 const state = path.join(xdgState!, app)
 const tmp = path.join(os.tmpdir(), app)
 
-await fs.mkdir(tmp, { recursive: true })
-
 const paths = {
   get home() {
     return process.env.OPENCODE_TEST_HOME ?? os.homedir()
@@ -26,7 +24,7 @@ const paths = {
   cache,
   config,
   state,
-  tmp: await fs.realpath(tmp),
+  tmp,
 }
 
 export const Path = paths
@@ -37,6 +35,7 @@ await Promise.all([
   fs.mkdir(Path.data, { recursive: true }),
   fs.mkdir(Path.config, { recursive: true }),
   fs.mkdir(Path.state, { recursive: true }),
+  fs.mkdir(Path.tmp, { recursive: true }),
   fs.mkdir(Path.log, { recursive: true }),
   fs.mkdir(Path.bin, { recursive: true }),
   fs.mkdir(Path.repos, { recursive: true }),

packages/www/content/docs/(Configure)/permissions.mdx

@@ -81,7 +81,8 @@ current built-in actions use these resources:
 | `<server>_<tool>` | `*` for an MCP tool; unsupported characters in both names become `_` |
 | `execute` | `*`; controls availability of the Code Mode dispatcher, while each nested tool still enforces its own permission |
 
-`doom_loop` and `lsp` are not current V2 Core permission actions.
+Built-in agent policy also reserves `plan_enter` and `plan_exit` for plan-mode
+transitions. `doom_loop` and `lsp` are not current V2 Core permission actions.
 
 ## External directories
 
@@ -131,9 +132,7 @@ matching, so authorize only trusted directory boundaries.
 
 ## Defaults
 
-Every agent, including custom agents, starts with ordered defaults that allow
-tools, ask for external directories, ask for `.env` reads, and allow
-`.env.example` reads. Shipped agents then add their own policies:
+The evaluator's fallback is `ask`, but shipped agents include ordered defaults:
 
 | Agent | Effective default policy |
 | --- | --- |
@@ -154,12 +153,8 @@ The base read rules are ordered as follows:
 ]
 ```
 
-OpenCode also permits its managed tool-output, shell-output, temporary, and
-global configuration directories. These exceptions apply only to the
-external-directory boundary for every agent; the underlying action still uses
-its own permission rules. The environment instructions identify the temporary
-directory available for work outside the workspace. Later global and
-agent-specific rules can override these defaults.
+OpenCode also permits its managed tool-output and temporary directories where
+needed. These exceptions do not grant general external-directory access.
 
 ## Agent overrides
 

packages/www/content/docs/build/plugins.mdx

@@ -239,16 +239,28 @@ without restarting OpenCode.
 
 ### Runtime hooks
 
-Runtime hooks intercept live operations. Their event objects expose specific
-mutable fields:
+Runtime hooks intercept live operations:
 
 | Hook                                        | Mutable fields                                                                 |
 | ------------------------------------------- | ------------------------------------------------------------------------------ |
 | `ctx.aisdk.hook("sdk", callback)`           | `sdk`, after inspecting `model`, `package`, and `options`                      |
 | `ctx.aisdk.hook("language", callback)`      | `language`, after inspecting `model`, `sdk`, and `options`                     |
-| `ctx.session.hook("request", callback)`     | `system`, `messages`, and the `tools` record immediately before model dispatch |
+| `ctx.session.hook("context", callback)`     | `system`, `messages`, and the `tools` record immediately before model dispatch |
+| `ctx.session.hook("http", middleware)`     | The model's HTTP request and response                                          |
 | `ctx.tool.hook("execute.before", callback)` | `input`, before the selected tool executes                                     |
-| `ctx.tool.hook("execute.after", callback)`  | Terminal `result` on success or `error` on failure                            |
+| `ctx.tool.hook("execute.after", callback)`  | Terminal `result` on success or `error` on failure                             |
+
+HTTP middleware can modify requests, inspect responses, retry, or return a
+response without calling the provider. It applies to native models; AI SDK
+models do not currently pass through this hook.
+
+```ts
+await ctx.session.hook("http", async (event, request, next) => {
+  request.headers.set("x-session-id", event.sessionID)
+  const response = await next(request)
+  return response
+})
+```
 
 For example, remove a tool from selected model requests and normalize another
 tool's input:
@@ -259,7 +271,7 @@ import { Plugin } from "@opencode-ai/plugin"
 export default Plugin.define({
   id: "acme.guards",
   setup: async (ctx) => {
-    await ctx.session.hook("request", (event) => {
+    await ctx.session.hook("context", (event) => {
       delete event.tools.write
     })
 

packages/www/openapi.json

@@ -851,16 +851,6 @@
                       }
                     ]
                   },
-                  "title": {
-                    "anyOf": [
-                      {
-                        "type": "string"
-                      },
-                      {
-                        "type": "null"
-                      }
-                    ]
-                  },
                   "agent": {
                     "anyOf": [
                       {
@@ -11311,104 +11301,6 @@
         }
       }
     },
-    "/api/vcs": {
-      "get": {
-        "tags": [
-          "vcs"
-        ],
-        "operationId": "v2.vcs.get",
-        "parameters": [
-          {
-            "name": "location",
-            "in": "query",
-            "schema": {
-              "anyOf": [
-                {
-                  "type": "object",
-                  "properties": {
-                    "directory": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    },
-                    "workspace": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    }
-                  },
-                  "additionalProperties": false
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "required": false,
-            "style": "deepObject",
-            "explode": true
-          }
-        ],
-        "security": [],
-        "responses": {
-          "200": {
-            "description": "Success",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "type": "object",
-                  "properties": {
-                    "location": {
-                      "$ref": "#/components/schemas/Location.Info"
-                    },
-                    "data": {
-                      "$ref": "#/components/schemas/Vcs.Info"
-                    }
-                  },
-                  "required": [
-                    "location",
-                    "data"
-                  ],
-                  "additionalProperties": false
-                }
-              }
-            }
-          },
-          "400": {
-            "description": "InvalidRequestError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "#/components/schemas/InvalidRequestError"
-                }
-              }
-            }
-          },
-          "401": {
-            "description": "UnauthorizedError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "#/components/schemas/UnauthorizedError"
-                }
-              }
-            }
-          }
-        },
-        "description": "Get current and default branch information for the requested location.",
-        "summary": "VCS info"
-      }
-    },
     "/api/vcs/status": {
       "get": {
         "tags": [
@@ -12140,15 +12032,11 @@
               },
               "directory": {
                 "type": "string"
-              },
-              "canonical": {
-                "type": "string"
               }
             },
             "required": [
               "id",
-              "directory",
-              "canonical"
+              "directory"
             ],
             "additionalProperties": false
           }
@@ -12610,6 +12498,7 @@
           "cost",
           "tokens",
           "time",
+          "title",
           "location"
         ],
         "additionalProperties": false
@@ -13948,15 +13837,6 @@
           },
           "message": {
             "type": "string"
-          },
-          "status": {
-            "type": "integer",
-            "allOf": [
-              {
-                "minimum": 100,
-                "maximum": 599
-              }
-            ]
           }
         },
         "required": [
@@ -20885,7 +20765,7 @@
           "id": {
             "type": "string"
           },
-          "canonical": {
+          "worktree": {
             "type": "string"
           },
           "vcs": {
@@ -20912,7 +20792,7 @@
         },
         "required": [
           "id",
-          "canonical",
+          "worktree",
           "time",
           "sandboxes"
         ],
@@ -20926,15 +20806,11 @@
           },
           "directory": {
             "type": "string"
-          },
-          "canonical": {
-            "type": "string"
           }
         },
         "required": [
           "id",
-          "directory",
-          "canonical"
+          "directory"
         ],
         "additionalProperties": false
       },
@@ -22569,6 +22445,7 @@
           "slug",
           "projectID",
           "directory",
+          "title",
           "version",
           "time"
         ],
@@ -29250,30 +29127,6 @@
         ],
         "additionalProperties": false
       },
-      "Vcs.Branch": {
-        "type": "object",
-        "properties": {
-          "current": {
-            "type": "string"
-          },
-          "default": {
-            "type": "string"
-          }
-        },
-        "additionalProperties": false
-      },
-      "Vcs.Info": {
-        "type": "object",
-        "properties": {
-          "branch": {
-            "$ref": "#/components/schemas/Vcs.Branch"
-          }
-        },
-        "required": [
-          "branch"
-        ],
-        "additionalProperties": false
-      },
       "Vcs.FileStatus": {
         "type": "object",
         "properties": {

packages/www/public/openapi.json

@@ -851,16 +851,6 @@
                       }
                     ]
                   },
-                  "title": {
-                    "anyOf": [
-                      {
-                        "type": "string"
-                      },
-                      {
-                        "type": "null"
-                      }
-                    ]
-                  },
                   "agent": {
                     "anyOf": [
                       {
@@ -11311,104 +11301,6 @@
         }
       }
     },
-    "/api/vcs": {
-      "get": {
-        "tags": [
-          "vcs"
-        ],
-        "operationId": "v2.vcs.get",
-        "parameters": [
-          {
-            "name": "location",
-            "in": "query",
-            "schema": {
-              "anyOf": [
-                {
-                  "type": "object",
-                  "properties": {
-                    "directory": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    },
-                    "workspace": {
-                      "anyOf": [
-                        {
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    }
-                  },
-                  "additionalProperties": false
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "required": false,
-            "style": "deepObject",
-            "explode": true
-          }
-        ],
-        "security": [],
-        "responses": {
-          "200": {
-            "description": "Success",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "type": "object",
-                  "properties": {
-                    "location": {
-                      "$ref": "#/components/schemas/Location.Info"
-                    },
-                    "data": {
-                      "$ref": "#/components/schemas/Vcs.Info"
-                    }
-                  },
-                  "required": [
-                    "location",
-                    "data"
-                  ],
-                  "additionalProperties": false
-                }
-              }
-            }
-          },
-          "400": {
-            "description": "InvalidRequestError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "#/components/schemas/InvalidRequestError"
-                }
-              }
-            }
-          },
-          "401": {
-            "description": "UnauthorizedError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "#/components/schemas/UnauthorizedError"
-                }
-              }
-            }
-          }
-        },
-        "description": "Get current and default branch information for the requested location.",
-        "summary": "VCS info"
-      }
-    },
     "/api/vcs/status": {
       "get": {
         "tags": [
@@ -12140,15 +12032,11 @@
               },
               "directory": {
                 "type": "string"
-              },
-              "canonical": {
-                "type": "string"
               }
             },
             "required": [
               "id",
-              "directory",
-              "canonical"
+              "directory"
             ],
             "additionalProperties": false
           }
@@ -12610,6 +12498,7 @@
           "cost",
           "tokens",
           "time",
+          "title",
           "location"
         ],
         "additionalProperties": false
@@ -13948,15 +13837,6 @@
           },
           "message": {
             "type": "string"
-          },
-          "status": {
-            "type": "integer",
-            "allOf": [
-              {
-                "minimum": 100,
-                "maximum": 599
-              }
-            ]
           }
         },
         "required": [
@@ -20885,7 +20765,7 @@
           "id": {
             "type": "string"
           },
-          "canonical": {
+          "worktree": {
             "type": "string"
           },
           "vcs": {
@@ -20912,7 +20792,7 @@
         },
         "required": [
           "id",
-          "canonical",
+          "worktree",
           "time",
           "sandboxes"
         ],
@@ -20926,15 +20806,11 @@
           },
           "directory": {
             "type": "string"
-          },
-          "canonical": {
-            "type": "string"
           }
         },
         "required": [
           "id",
-          "directory",
-          "canonical"
+          "directory"
         ],
         "additionalProperties": false
       },
@@ -22569,6 +22445,7 @@
           "slug",
           "projectID",
           "directory",
+          "title",
           "version",
           "time"
         ],
@@ -29250,30 +29127,6 @@
         ],
         "additionalProperties": false
       },
-      "Vcs.Branch": {
-        "type": "object",
-        "properties": {
-          "current": {
-            "type": "string"
-          },
-          "default": {
-            "type": "string"
-          }
-        },
-        "additionalProperties": false
-      },
-      "Vcs.Info": {
-        "type": "object",
-        "properties": {
-          "branch": {
-            "$ref": "#/components/schemas/Vcs.Branch"
-          }
-        },
-        "required": [
-          "branch"
-        ],
-        "additionalProperties": false
-      },
       "Vcs.FileStatus": {
         "type": "object",
         "properties": {