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fix(core): clarify Code Mode tool boundary

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Aiden Cline 2026-07-29 11:46:26 -05:00
commit 6f3ec85d1e
4 changed files with 8 additions and 3 deletions
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4
packages/core/src/codemode/instructions.ts
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@ -6,7 +6,9 @@ import { Instructions } from "../instructions/index"
import { CodeModeCatalog } from "./catalog"
// prettier-ignore
const prompt = (hasMoreTools: boolean) => `The Code Mode tool catalog below is ${hasMoreTools ? "partial" : "complete"}.${hasMoreTools ? `
const prompt = (hasMoreTools: boolean) => `The Code Mode tool catalog below is ${hasMoreTools ? "partial" : "complete"}.
The Code Mode catalog and \`search\` results are the complete set of tools available within Code Mode. Tools presented elsewhere are not available in this runtime.${hasMoreTools ? `
## Search

2
packages/core/src/codemode/tool.ts
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@ -33,7 +33,7 @@ type CollectedFiles = {
// Invariant model-facing guidance; the changing tool catalog is delivered through Instructions.
const description = [
"Run JavaScript to orchestrate tool calls and compose their results through `{ code }` in a confined Code Mode runtime.",
"Run JavaScript in a confined Code Mode runtime to orchestrate tool calls and compose their results.",
"Imports, direct filesystem access, and timers are unavailable. Do not use `fetch`; all external access goes through `tools`.",
"Within `{ code }`, the only callable tools are those explicitly listed in the Code Mode catalog instructions or returned by `search`. Inside `{ code }`, ignore tools shown outside the Code Mode catalog. They are not available in the Code Mode runtime.",
'Call tools through `tools` using only exact paths and signatures from the catalog. Do not infer or normalize tool names; preserve bracket notation such as `tools.<namespace>["tool-name"](input)`.',

3
packages/core/test/codemode/instructions.test.ts
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@ -44,6 +44,9 @@ describe("CodeModeInstructions", () => {
it.effect("renders the initial catalog, semantic deltas, and removal", () =>
Effect.gen(function* () {
const initialized = yield* readInitial(CodeModeInstructions.make([echo]))
expect(initialized.text).toContain(
"The Code Mode catalog and `search` results are the complete set of tools available within Code Mode. Tools presented elsewhere are not available in this runtime.",
)
expect(initialized.text).toContain("## Available tools")
expect(initialized.text).not.toContain("## Search")
expect(initialized.text).toContain(` - ${echo.signature} // Echo text`)

2
packages/core/test/tool-execute.test.ts
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@ -22,7 +22,7 @@ const createCodeMode = (tools: ReadonlyMap<string, Info>) =>
test("execute describes invariant Code Mode behavior", () => {
expect(createCodeMode(new Map()).description).toBe(
[
"Run JavaScript to orchestrate tool calls and compose their results through `{ code }` in a confined Code Mode runtime.",
"Run JavaScript in a confined Code Mode runtime to orchestrate tool calls and compose their results.",
"Imports, direct filesystem access, and timers are unavailable. Do not use `fetch`; all external access goes through `tools`.",
"Within `{ code }`, the only callable tools are those explicitly listed in the Code Mode catalog instructions or returned by `search`. Inside `{ code }`, ignore tools shown outside the Code Mode catalog. They are not available in the Code Mode runtime.",
'Call tools through `tools` using only exact paths and signatures from the catalog. Do not infer or normalize tool names; preserve bracket notation such as `tools.<namespace>["tool-name"](input)`.',