refactor(core): remove output paths metadata

packages/core/src/plugin/host.ts

@@ -398,14 +398,12 @@ export const make = Effect.fn("PluginHost.make")(function* (plugin: PluginV2.Int
             input: event.input,
             result: event.result,
             output: event.output,
-            outputPaths: event.outputPaths,
           }
           return Reflect.apply(callback, undefined, [output]).pipe(
             Effect.tap(() =>
               Effect.sync(() => {
                 event.result = output.result
                 event.output = output.output
-                event.outputPaths = output.outputPaths
               }),
             ),
           )

packages/core/src/tool-output-store.ts

@@ -22,11 +22,6 @@ export interface BoundInput {
   readonly output: ToolOutput
 }
 
-export interface BoundResult {
-  readonly output: ToolOutput
-  readonly outputPaths: ReadonlyArray<string>
-}
-
 export class StorageError extends Schema.TaggedErrorClass<StorageError>()("ToolOutputStore.StorageError", {
   operation: Schema.Literals(["encode", "write"]),
   cause: Schema.Defect(),
@@ -41,7 +36,7 @@ export type Error = StorageError
 
 export interface Interface {
   readonly limits: () => Effect.Effect<{ readonly maxLines: number; readonly maxBytes: number }>
-  readonly bound: (input: BoundInput) => Effect.Effect<BoundResult, Error>
+  readonly bound: (input: BoundInput) => Effect.Effect<ToolOutput, Error>
   readonly cleanup: () => Effect.Effect<void>
 }
 
@@ -150,26 +145,20 @@ const layer = Layer.effect(
         lineCount(contextual) <= outputLimits.maxLines &&
         Buffer.byteLength(contextual, "utf-8") <= outputLimits.maxBytes
       )
-        return {
+        return input.output
-          output: input.output,
-          outputPaths: [],
-        }
 
       const outputPath = yield* write(contextual)
       const marker = `... output truncated; full content saved to ${outputPath} ...`
 
       return {
-        output: {
+        structured: input.output.structured,
-          structured: input.output.structured,
+        content: [
-          content: [
+          {
-            {
+            type: "text" as const,
-              type: "text" as const,
+            text: boundedPreview(contextual, marker, outputLimits.maxLines, outputLimits.maxBytes),
-              text: boundedPreview(contextual, marker, outputLimits.maxLines, outputLimits.maxBytes),
+          },
-            },
+          ...media,
-            ...media,
+        ],
-          ],
-        },
-        outputPaths: [outputPath],
       }
     })
 

packages/core/src/tool/AGENTS.md

@@ -55,4 +55,3 @@ Producer capture limits are separate. For example, Bash keeps `AppProcess.maxOut
 ## Current Gaps
 
 - MCP and future Session-scoped registrations still need an explicit canonical registration design.
-- The public Session result shape currently exposes managed `outputPaths`; full storage encapsulation requires a future opaque managed-output reference design.

packages/core/src/tool/hooks.ts

@@ -26,7 +26,6 @@ export interface AfterEvent {
   readonly input: unknown
   result: ToolResultValue
   output?: ToolOutput
-  outputPaths?: ReadonlyArray<string>
 }
 
 export interface Interface {

packages/core/src/tool/registry.ts

@@ -55,7 +55,6 @@ export interface Materialization {
 export interface Settlement {
   readonly result: ToolResultValue
   readonly output?: ToolOutput
-  readonly outputPaths?: ReadonlyArray<string>
   readonly error?: SessionError.Error
 }
 
@@ -157,20 +156,13 @@ const registryLayer = Layer.effect(
       if ("result" in pending) {
         settlement = pending
       } else {
-        const bounded = yield* resources.bound({
+        const output = yield* resources.bound({
           sessionID: input.sessionID,
           callID: input.call.id,
           output: { structured: pending.output.structured, content: yield* normalizeImages(pending.output.content) },
         })
-        const result = ToolOutput.toResultValue(bounded.output)
+        const result = ToolOutput.toResultValue(output)
-        settlement =
+        settlement = result.type === "error" ? { result } : { result, output }
-          result.type === "error"
-            ? bounded.outputPaths.length > 0
-              ? { result, outputPaths: bounded.outputPaths }
-              : { result }
-            : bounded.outputPaths.length > 0
-              ? { result, output: bounded.output, outputPaths: bounded.outputPaths }
-              : { result, output: bounded.output }
       }
       const afterEvent: ToolHooks.AfterEvent = {
         tool: input.call.name,
@@ -181,13 +173,11 @@ const registryLayer = Layer.effect(
         input: beforeEvent.input,
         result: settlement.result,
         output: settlement.output,
-        outputPaths: settlement.outputPaths,
       }
       yield* toolHooks.runAfter(afterEvent)
       return {
         result: afterEvent.result,
         ...(afterEvent.output !== undefined ? { output: afterEvent.output } : {}),
-        ...(afterEvent.outputPaths !== undefined ? { outputPaths: afterEvent.outputPaths } : {}),
         ...(settlement.error !== undefined ? { error: settlement.error } : {}),
       }
     })

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

@@ -20,11 +20,8 @@ const outputStore = Layer.mock(ToolOutputStore.Service, {
     return Effect.sync(() => bounds.push(input)).pipe(
       Effect.as(
         input.callID === "call-bounded"
-          ? {
+          ? { structured: {}, content: [{ type: "text" as const, text: "bounded reference" }] }
-              output: { structured: {}, content: [{ type: "text" as const, text: "bounded reference" }] },
+          : input.output,
-              outputPaths: ["/managed/generic"],
-            }
-          : { output: input.output, outputPaths: [] },
       ),
     )
   },
@@ -282,7 +279,6 @@ describe("ToolRegistry", () => {
       ).toEqual({
         result: { type: "text", value: "bounded reference" },
         output: { structured: {}, content: [{ type: "text", text: "bounded reference" }] },
-        outputPaths: ["/managed/generic"],
       })
       expect(bounds).toHaveLength(1)
     }),

packages/core/test/tool-output-store.test.ts

@@ -9,11 +9,19 @@ import { Config } from "@opencode-ai/core/config"
 import { ConfigToolOutput } from "@opencode-ai/core/config/tool-output"
 import { SessionV2 } from "@opencode-ai/core/session"
 import { ToolOutputStore } from "@opencode-ai/core/tool-output-store"
+import type { ToolOutput } from "@opencode-ai/ai"
 import { testEffect } from "./lib/effect"
 import { tmpdir } from "./fixture/tmpdir"
 
 const sessionID = SessionV2.ID.make("ses_tool_output_store")
 
+const retainedPath = (output: ToolOutput) => {
+  const text = output.content.find((item) => item.type === "text")?.text
+  const match = text && /full content saved to (.+) \.\.\./.exec(text)
+  if (!match) throw new Error("expected managed output path in bounded content")
+  return match[1]
+}
+
 const withStore = <A, E, R>(
   body: (input: { root: string; store: ToolOutputStore.Interface; fs: FSUtil.Interface }) => Effect.Effect<A, E, R>,
   config?: Config.Info,
@@ -61,11 +69,10 @@ describe("ToolOutputStore", () => {
             ],
           },
         })
-        expect(result.output.structured).toEqual({ kind: "report" })
+        expect(result.structured).toEqual({ kind: "report" })
-        expect(result.outputPaths).toHaveLength(1)
+        expect(yield* fs.readFileString(retainedPath(result))).toBe(first + second)
-        expect(yield* fs.readFileString(result.outputPaths[0])).toBe(first + second)
+        if (result.content[0]?.type !== "text") throw new Error("expected text preview")
-        if (result.output.content[0]?.type !== "text") throw new Error("expected text preview")
+        expect(Buffer.byteLength(result.content[0].text)).toBeLessThanOrEqual(ToolOutputStore.MAX_BYTES)
-        expect(Buffer.byteLength(result.output.content[0].text)).toBeLessThanOrEqual(ToolOutputStore.MAX_BYTES)
       }),
     ),
   )
@@ -75,10 +82,9 @@ describe("ToolOutputStore", () => {
       Effect.gen(function* () {
         const structured = { text: "x".repeat(ToolOutputStore.MAX_BYTES) }
         const result = yield* store.bound({ sessionID, callID: "call-json", output: { structured, content: [] } })
-        expect(result.output.structured).toEqual(structured)
+        expect(result.structured).toEqual(structured)
-        expect(result.outputPaths).toHaveLength(1)
+        expect(JSON.parse(yield* fs.readFileString(retainedPath(result)))).toEqual(structured)
-        expect(JSON.parse(yield* fs.readFileString(result.outputPaths[0]))).toEqual(structured)
+        expect(result.content).toHaveLength(1)
-        expect(result.output.content).toHaveLength(1)
       }),
     ),
   )
@@ -95,10 +101,9 @@ describe("ToolOutputStore", () => {
             content: [{ type: "file", uri: `data:image/png;base64,${data}`, mime: "image/png", name: "pixel.png" }],
           },
         })
-        expect(result.outputPaths).toEqual([])
+        expect(result.structured).toEqual({ caption: "pixel" })
-        expect(result.output.structured).toEqual({ caption: "pixel" })
+        expect(result.content).toHaveLength(1)
-        expect(result.output.content).toHaveLength(1)
+        expect(result.content[0]).toEqual({
-        expect(result.output.content[0]).toEqual({
           type: "file",
           uri: `data:image/png;base64,${data}`,
           mime: "image/png",
@@ -124,9 +129,9 @@ describe("ToolOutputStore", () => {
           output: { structured: { caption: "pixel" }, content: [{ type: "text", text }, media] },
         })
 
-        expect(result.output.structured).toEqual({ caption: "pixel" })
+        expect(result.structured).toEqual({ caption: "pixel" })
-        expect(result.output.content[1]).toEqual(media)
+        expect(result.content[1]).toEqual(media)
-        expect(yield* fs.readFileString(result.outputPaths[0])).toBe(text)
+        expect(yield* fs.readFileString(retainedPath(result))).toBe(text)
       }),
     ),
   )
@@ -136,10 +141,7 @@ describe("ToolOutputStore", () => {
       Effect.gen(function* () {
         const text = "x".repeat(30_000)
         const output = { structured: { output: text }, content: [{ type: "text" as const, text }] }
-        expect(yield* store.bound({ sessionID, callID: "call-duplicated", output })).toEqual({
+        expect(yield* store.bound({ sessionID, callID: "call-duplicated", output })).toEqual(output)
-          output,
-          outputPaths: [],
-        })
       }),
     ),
   )
@@ -166,10 +168,7 @@ describe("ToolOutputStore", () => {
     withStore(({ store }) =>
       Effect.gen(function* () {
         const output = { structured: { value: 1n }, content: [{ type: "text" as const, text: "readable text" }] }
-        expect(yield* store.bound({ sessionID, callID: "call-unencodable", output })).toEqual({
+        expect(yield* store.bound({ sessionID, callID: "call-unencodable", output })).toEqual(output)
-          output,
-          outputPaths: [],
-        })
       }),
     ),
   )
@@ -219,7 +218,7 @@ describe("ToolOutputStore", () => {
             callID: "call-config",
             output: { structured: {}, content: [{ type: "text", text: "one\ntwo\nthree" }] },
           })
-          expect(result.outputPaths).toHaveLength(1)
+          expect(retainedPath(result)).toContain("tool-output")
         }),
       new Config.Info({ tool_output: new ConfigToolOutput.Info({ max_lines: 2, max_bytes: 1_000 }) }),
     ),

packages/core/test/tool-read.test.ts

@@ -325,7 +325,6 @@ describe("ReadTool", () => {
         call: { type: "tool-call", id: "call-large-image", name: "read", input: { path: "large.png" } },
       })
 
-      expect(settled.outputPaths).toBeUndefined()
       expect(settled.output?.structured).toMatchObject({
         uri: "file:///large.png",
         name: "large.png",

packages/docs/build/plugins.mdx

@@ -248,7 +248,7 @@ mutable fields:
 | `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.tool.hook("execute.before", callback)` | `input`, before the selected tool executes                                     |
-| `ctx.tool.hook("execute.after", callback)`  | `result`, `output`, and `outputPaths`, after execution settles                 |
+| `ctx.tool.hook("execute.after", callback)`  | `result` and `output`, after execution settles                                 |
 
 For example, remove a tool from selected model requests and normalize another
 tool's input:

packages/plugin/src/v2/effect/tool.ts

@@ -290,7 +290,6 @@ export interface ToolExecuteAfterEvent {
   readonly input: unknown
   result: ToolResultValue
   output?: ToolOutput
-  outputPaths?: ReadonlyArray<string>
 }
 
 export interface RegisterOptions {

packages/sdk/openapi.json

@@ -18577,12 +18577,6 @@
                           "$ref": "#/components/schemas/LLMToolContent"
                         }
                       },
-                      "outputPaths": {
-                        "type": "array",
-                        "items": {
-                          "type": "string"
-                        }
-                      },
                       "result": {},
                       "provider": {
                         "type": "object",
@@ -26400,12 +26394,6 @@
                       "$ref": "#/components/schemas/LLMToolContent"
                     }
                   },
-                  "outputPaths": {
-                    "type": "array",
-                    "items": {
-                      "type": "string"
-                    }
-                  },
                   "result": {},
                   "provider": {
                     "type": "object",
@@ -27526,12 +27514,6 @@
               "$ref": "#/components/schemas/LLMToolContent"
             }
           },
-          "outputPaths": {
-            "type": "array",
-            "items": {
-              "type": "string"
-            }
-          },
           "structured": {
             "type": "object"
           },
@@ -29006,12 +28988,6 @@
                   "$ref": "#/components/schemas/LLMToolContent"
                 }
               },
-              "outputPaths": {
-                "type": "array",
-                "items": {
-                  "type": "string"
-                }
-              },
               "result": {},
               "provider": {
                 "type": "object",
@@ -34876,12 +34852,6 @@
                   "$ref": "#/components/schemas/LLMToolContent"
                 }
               },
-              "outputPaths": {
-                "type": "array",
-                "items": {
-                  "type": "string"
-                }
-              },
               "result": {},
               "provider": {
                 "type": "object",

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

@@ -248,7 +248,7 @@ mutable fields:
 | `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.tool.hook("execute.before", callback)` | `input`, before the selected tool executes                                     |
-| `ctx.tool.hook("execute.after", callback)`  | `result`, `output`, and `outputPaths`, after execution settles                 |
+| `ctx.tool.hook("execute.after", callback)`  | `result` and `output`, after execution settles                                 |
 
 For example, remove a tool from selected model requests and normalize another
 tool's input:

specs/v2/schema-changelog.md

@@ -312,7 +312,6 @@ Compatibility:
 
 Affected schema:
 
-- New optional managed `outputPath` and `outputPaths` fields on tool results and completed Session tool state.
 - Absolute managed output paths accepted by ordinary `read` and `grep` inputs.
 
 Change:
@@ -327,7 +326,7 @@ Reason:
 
 Compatibility:
 
-- Managed output is retained for a bounded period and exposed as a normal host filesystem path.
+- Managed output is retained for a bounded period and exposed in bounded tool content as a normal host filesystem path.
 
 ### Location-Scoped Filesystem Read And Search Contracts