refactor: report tool calls on the experimental ACP v2 surface (#1231)

First part of step 4 of opt-in ACP v2 support (#1217, #1219, #1226,
#1230): the v2 surface now sends the agent's tool calls. Nothing changes
on ACP v1.

## Change

`src/v2/tool-call.ts` maps the agent's v1 tool call reports to v2:
- **One message.** v1 reports a new tool call with `tool_call` and
changes it with `tool_call_update`. v2 has one `tool_call_update` that
upserts by `toolCallId`, so both become that.
- **`null` is left out.** Both versions leave an omitted field unchanged
and replace `content` and `locations` as whole arrays. They differ on
`null`: in v1 it leaves a field unchanged (v1's `name` docs say so
explicitly), in v2 it clears it. The agent doesn't send `null` fields
today; a unit test pins the rule.
- **Content blocks pass through.** v2's content blocks are a superset of
v1's.
- **Diff and terminal content still throw**, until their own parts of
step 4.

## Scenario suite

Of the 30 scenarios that stopped at their first `tool_call`:

| Status now | Scenarios |
|---|---|
| passes | 17: `read`, `grep-and-glob`, `bash-error`, `bash-background`,
`skill`, `ask-user-question`, `memory-recall`, `permission-denied`,
`tool-progress`, `task-output-and-stop`, four subagent scenarios, the
three compaction scenarios |
| stops at a permission request (step 5) | 9 |
| stops at diff content (next part of step 4) | 4 |

The 17 new golden files are in
`src/tests/acp-scenarios/__snapshots__/v2/`.

**One new check.** In v1, a `tool_call_update` for an id the client
hasn't seen is an orphan, and clients drop it. In v2 the same message
creates a tool call. A stray update would show up as a blank tool call,
and the schema can't catch that. So every scenario recording, including
those that stop, must give each tool call a title in its first report.
It passes everywhere; making the first report lose its title fails it in
30 scenarios.

## Noted for later, not changed here

- **`_meta` becomes stored state.** In v1, a report's `_meta` belongs to
that report. In v2 it's stored on the tool call, and a concrete value
replaces it. So a v2 client keeps only the last report's
`_meta.claudeCode`: in `permission-denied`, the denial's `toolResponse`
is replaced by the result's `{ toolName }`. No v2 client reads these
keys yet.
- **v2 has a `cancelled` tool status.** v1 reports an interrupted tool
as `failed` with `_meta.claudeCode.nonExecutionKind`. Mapping it to
`cancelled` means deciding where that fact lives.

## Verification

Build, lint and all 2353 tests pass.
This commit is contained in:
Ben Brandt
2026-10-02 08:20:13 -07:00
committed by GitHub
parent 2b7fab7d98
commit 23b8ebf8c2
21 changed files with 431 additions and 33 deletions

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@@ -8,6 +8,9 @@
* stopped into passing, and updates the table.
* - Schema: every message the agent sends, also in a scenario that stops, is
* valid against the draft v2 schema of the SDK.
* - Tool calls: the first report of each tool call has a title. v2 has no
* `tool_call`, so a report of a tool call that the client has not seen
* creates it, where v1 drops it.
* - Golden files: `acp-scenarios/__snapshots__/v2/<scenario>.jsonl` for each
* passing scenario. Run `npx vitest run src/tests/acp-scenarios-v2.test.ts -u`
* to update them.
@@ -57,9 +60,10 @@ const here = path.dirname(fileURLToPath(import.meta.url));
const PASSES = "passes";
/** Step 4 of `docs/acp-v2.md`. */
const TOOL_CALLS = "The ACP v2 surface does not translate tool_call session updates yet";
const DIFFS = "The ACP v2 surface does not translate diff tool call content yet";
const REPLAY = "Invalid params: The ACP v2 surface does not replay session history yet";
/** Step 5 of `docs/acp-v2.md`. */
const PERMISSIONS = "The ACP v2 surface does not serve session/request_permission yet";
const PLANS = "The ACP v2 surface does not translate plan session updates yet";
/**
@@ -69,43 +73,43 @@ const PLANS = "The ACP v2 surface does not translate plan session updates yet";
const V2_STATUS: Record<string, string> = {
"session-setup": PASSES,
"text-and-thinking": PASSES,
"bash-foreground": TOOL_CALLS,
"bash-error": TOOL_CALLS,
"bash-background": TOOL_CALLS,
"bash-foreground": PERMISSIONS,
"bash-error": PASSES,
"bash-background": PASSES,
"async-task-held-until-tool-id": PASSES,
"async-task-ends-before-tool-id": PASSES,
"async-task-released-at-turn-end": PASSES,
read: TOOL_CALLS,
"write-new": TOOL_CALLS,
"write-existing": TOOL_CALLS,
"edit-with-permission": TOOL_CALLS,
"edit-rejected": TOOL_CALLS,
"notebook-edit": TOOL_CALLS,
"grep-and-glob": TOOL_CALLS,
"web-fetch-and-search": TOOL_CALLS,
"subagent-task-legacy": TOOL_CALLS,
"subagent-agent-async": TOOL_CALLS,
"subagent-native-sessions": TOOL_CALLS,
"subagent-nested": TOOL_CALLS,
"subagent-late-child-update": TOOL_CALLS,
"subagent-transcript-extension": TOOL_CALLS,
read: PASSES,
"write-new": DIFFS,
"write-existing": DIFFS,
"edit-with-permission": DIFFS,
"edit-rejected": DIFFS,
"notebook-edit": PERMISSIONS,
"grep-and-glob": PASSES,
"web-fetch-and-search": PERMISSIONS,
"subagent-task-legacy": PERMISSIONS,
"subagent-agent-async": PASSES,
"subagent-native-sessions": PERMISSIONS,
"subagent-nested": PASSES,
"subagent-late-child-update": PASSES,
"subagent-transcript-extension": PASSES,
"todo-write": PLANS,
"task-create-update": PLANS,
goal: PASSES,
"network-permission": TOOL_CALLS,
"exit-plan-approve": TOOL_CALLS,
"exit-plan-reject": TOOL_CALLS,
"ask-user-question": TOOL_CALLS,
skill: TOOL_CALLS,
"mcp-tool": TOOL_CALLS,
"task-output-and-stop": TOOL_CALLS,
"memory-recall": TOOL_CALLS,
"permission-denied": TOOL_CALLS,
"tool-progress": TOOL_CALLS,
"network-permission": PERMISSIONS,
"exit-plan-approve": PERMISSIONS,
"exit-plan-reject": PERMISSIONS,
"ask-user-question": PASSES,
skill: PASSES,
"mcp-tool": PERMISSIONS,
"task-output-and-stop": PASSES,
"memory-recall": PASSES,
"permission-denied": PASSES,
"tool-progress": PASSES,
"rate-limit-and-origin": PASSES,
"compaction-legacy": TOOL_CALLS,
"compaction-update": TOOL_CALLS,
"compaction-failed-legacy": TOOL_CALLS,
"compaction-legacy": PASSES,
"compaction-update": PASSES,
"compaction-failed-legacy": PASSES,
"session-load-replay": REPLAY,
};
@@ -181,6 +185,25 @@ describe("ACP v2 scenarios", () => {
});
});
describe("tool calls are reported with a title first", () => {
it.each(SCENARIOS.map((scenario) => scenario.name))("%s", (scenario) => {
const reported = new Set<string>();
const untitled: string[] = [];
for (const message of run(scenario).raw) {
if (message.kind !== "notification" || message.method !== "session/update") continue;
const { sessionId, update } = message.payload as {
sessionId: string;
update: { sessionUpdate: string; toolCallId?: string; title?: unknown };
};
if (update.sessionUpdate !== "tool_call_update") continue;
const key = `${sessionId} ${update.toolCallId}`;
if (!reported.has(key) && typeof update.title !== "string") untitled.push(key);
reported.add(key);
}
expect(untitled).toEqual([]);
});
});
describe("v2 golden files", () => {
const passing = SCENARIOS.map((scenario) => scenario.name).filter(
(scenario) => V2_STATUS[scenario] === PASSES,

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@@ -0,0 +1,16 @@
{"kind":"response","method":"initialize","payload":{"_meta":{"steering":{"supported":true}},"authMethods":[],"capabilities":{"_meta":{"authStatus":{},"claudeCode":{"promptQueueing":true}}},"info":{"name":"@agentclientprotocol/claude-agent-acp","title":"Claude Agent","version":"<version>"},"protocolVersion":2}}
{"kind":"response","method":"session/new","payload":{"configOptions":[{"category":"mode","configId":"mode","currentValue":"default","description":"Session permission mode","name":"Mode","options":[{"description":"Always ask before making changes","name":"Manual","value":"default"},{"description":"Automatically accept all file edits","name":"Accept edits","value":"acceptEdits"},{"description":"Create a plan before making changes","name":"Plan","value":"plan"},{"description":"Claude handles permission decisions","name":"Auto","value":"auto"},{"description":"Accepts all permissions","name":"Bypass permissions","value":"bypassPermissions"}],"type":"select"},{"category":"model","configId":"model","currentValue":"claude-sonnet-4-6","description":"AI model to use","name":"Model","options":[{"description":"Fast","name":"Claude Sonnet 4.6","value":"claude-sonnet-4-6"}],"type":"select"}],"sessionId":"<session>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"availableCommands":[{"description":"Show the MCP servers and their status, or reconnect, enable, or disable a server","input":{"hint":"[reconnect|enable|disable [<server>|all]]","type":"text"},"name":"mcp"}],"sessionUpdate":"available_commands_update"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"content":[{"text":"prompt 1","type":"text"}],"messageId":"<id-1>","sessionUpdate":"user_message"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"sessionUpdate":"state_update","state":"running"}}}
{"kind":"response","method":"session/prompt","payload":{"messageId":"<id-1>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"AskUserQuestion"}},"content":[],"kind":"other","name":"AskUserQuestion","rawInput":{},"sessionUpdate":"tool_call_update","status":"pending","title":"Asking for your input","toolCallId":"toolu_ask"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":3}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"AskUserQuestion"}},"content":[{"content":{"text":"Which database?","type":"text"},"type":"content"}],"rawInput":{"questions":[{"header":"Database","multiSelect":false,"options":[{"description":"Relational","label":"Postgres","preview":"CREATE TABLE t ();"},{"description":"Key-value","label":"Redis"}],"question":"Which database?"}]},"sessionUpdate":"tool_call_update","title":"Which database?","toolCallId":"toolu_ask"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"sessionUpdate":"state_update","state":"requires_action"}}}
{"kind":"request","method":"elicitation/create","payload":{"message":"Which database?","mode":"form","requestedSchema":{"properties":{"question_0":{"oneOf":[{"_meta":{"_claude/askUserQuestionOption":{"preview":"CREATE TABLE t ();"}},"const":"Postgres","description":"Relational","title":"Postgres"},{"const":"Redis","description":"Key-value","title":"Redis"}],"title":"Database","type":"string"},"question_0_custom":{"description":"Type your own answer, or add a note to the option you chose above (optional).","title":"Other","type":"string"}},"type":"object"},"sessionId":"<session>","toolCallId":"toolu_ask"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"sessionUpdate":"state_update","state":"running"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"AskUserQuestion"}},"content":[{"content":{"text":"User has answered your questions: \"Which database?\"=\"Postgres\".","type":"text"},"type":"content"}],"rawOutput":"User has answered your questions: \"Which database?\"=\"Postgres\".","sessionUpdate":"tool_call_update","status":"completed","toolCallId":"toolu_ask"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"cost":{"amount":0,"currency":"USD"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"quota":{"model_usage":[],"token_count":{"cachedInputTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"reasoningOutputTokens":0,"totalTokens":0}}},"sessionUpdate":"state_update","state":"idle","stopReason":"end_turn","usage":{"cachedReadTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"totalTokens":0}}}}

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@@ -0,0 +1,15 @@
{"kind":"response","method":"initialize","payload":{"_meta":{"steering":{"supported":true}},"authMethods":[],"capabilities":{"_meta":{"authStatus":{},"claudeCode":{"promptQueueing":true}}},"info":{"name":"@agentclientprotocol/claude-agent-acp","title":"Claude Agent","version":"<version>"},"protocolVersion":2}}
{"kind":"response","method":"session/new","payload":{"configOptions":[{"category":"mode","configId":"mode","currentValue":"default","description":"Session permission mode","name":"Mode","options":[{"description":"Always ask before making changes","name":"Manual","value":"default"},{"description":"Automatically accept all file edits","name":"Accept edits","value":"acceptEdits"},{"description":"Create a plan before making changes","name":"Plan","value":"plan"},{"description":"Claude handles permission decisions","name":"Auto","value":"auto"},{"description":"Accepts all permissions","name":"Bypass permissions","value":"bypassPermissions"}],"type":"select"},{"category":"model","configId":"model","currentValue":"claude-sonnet-4-6","description":"AI model to use","name":"Model","options":[{"description":"Fast","name":"Claude Sonnet 4.6","value":"claude-sonnet-4-6"}],"type":"select"}],"sessionId":"<session>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"availableCommands":[{"description":"Show the MCP servers and their status, or reconnect, enable, or disable a server","input":{"hint":"[reconnect|enable|disable [<server>|all]]","type":"text"},"name":"mcp"}],"sessionUpdate":"available_commands_update"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"content":[{"text":"prompt 1","type":"text"}],"messageId":"<id-1>","sessionUpdate":"user_message"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"sessionUpdate":"state_update","state":"running"}}}
{"kind":"response","method":"session/prompt","payload":{"messageId":"<id-1>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"content":[],"kind":"execute","name":"Bash","rawInput":{},"sessionUpdate":"tool_call_update","status":"pending","title":"Terminal","toolCallId":"toolu_bg"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"rawInput":{"command":"sleep 100"},"sessionUpdate":"tool_call_update","title":"sleep 100","toolCallId":"toolu_bg"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"rawInput":{"command":"sleep 100","description":"Wait"},"sessionUpdate":"tool_call_update","toolCallId":"toolu_bg"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":3}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"content":[{"content":{"text":"Wait","type":"text"},"type":"content"}],"rawInput":{"command":"sleep 100","description":"Wait","run_in_background":true},"sessionUpdate":"tool_call_update","toolCallId":"toolu_bg"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"content":[{"content":{"text":"```console\nCommand running in background with ID: bash_1. Output is being written to: /tmp/tasks/bash_1.output. You will be notified when it completes.\n```","type":"text"},"type":"content"}],"rawOutput":"Command running in background with ID: bash_1. Output is being written to: /tmp/tasks/bash_1.output. You will be notified when it completes.","sessionUpdate":"tool_call_update","status":"completed","toolCallId":"toolu_bg"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"cost":{"amount":0,"currency":"USD"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"quota":{"model_usage":[],"token_count":{"cachedInputTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"reasoningOutputTokens":0,"totalTokens":0}}},"sessionUpdate":"state_update","state":"idle","stopReason":"end_turn","usage":{"cachedReadTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"totalTokens":0}}}}

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@@ -0,0 +1,14 @@
{"kind":"response","method":"initialize","payload":{"_meta":{"steering":{"supported":true}},"authMethods":[],"capabilities":{"_meta":{"authStatus":{},"claudeCode":{"promptQueueing":true}}},"info":{"name":"@agentclientprotocol/claude-agent-acp","title":"Claude Agent","version":"<version>"},"protocolVersion":2}}
{"kind":"response","method":"session/new","payload":{"configOptions":[{"category":"mode","configId":"mode","currentValue":"default","description":"Session permission mode","name":"Mode","options":[{"description":"Always ask before making changes","name":"Manual","value":"default"},{"description":"Automatically accept all file edits","name":"Accept edits","value":"acceptEdits"},{"description":"Create a plan before making changes","name":"Plan","value":"plan"},{"description":"Claude handles permission decisions","name":"Auto","value":"auto"},{"description":"Accepts all permissions","name":"Bypass permissions","value":"bypassPermissions"}],"type":"select"},{"category":"model","configId":"model","currentValue":"claude-sonnet-4-6","description":"AI model to use","name":"Model","options":[{"description":"Fast","name":"Claude Sonnet 4.6","value":"claude-sonnet-4-6"}],"type":"select"}],"sessionId":"<session>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"availableCommands":[{"description":"Show the MCP servers and their status, or reconnect, enable, or disable a server","input":{"hint":"[reconnect|enable|disable [<server>|all]]","type":"text"},"name":"mcp"}],"sessionUpdate":"available_commands_update"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"content":[{"text":"prompt 1","type":"text"}],"messageId":"<id-1>","sessionUpdate":"user_message"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"sessionUpdate":"state_update","state":"running"}}}
{"kind":"response","method":"session/prompt","payload":{"messageId":"<id-1>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"content":[],"kind":"execute","name":"Bash","rawInput":{},"sessionUpdate":"tool_call_update","status":"pending","title":"Terminal","toolCallId":"toolu_bash"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"rawInput":{"command":"false"},"sessionUpdate":"tool_call_update","title":"false","toolCallId":"toolu_bash"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":3}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"content":[{"content":{"text":"Fail","type":"text"},"type":"content"}],"rawInput":{"command":"false","description":"Fail"},"sessionUpdate":"tool_call_update","toolCallId":"toolu_bash"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"content":[{"content":{"text":"```\nExit code 1\nboom\n```","type":"text"},"type":"content"}],"rawOutput":"Exit code 1\nboom","sessionUpdate":"tool_call_update","status":"failed","toolCallId":"toolu_bash"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"cost":{"amount":0,"currency":"USD"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"quota":{"model_usage":[],"token_count":{"cachedInputTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"reasoningOutputTokens":0,"totalTokens":0}}},"sessionUpdate":"state_update","state":"idle","stopReason":"end_turn","usage":{"cachedReadTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"totalTokens":0}}}}

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@@ -0,0 +1,9 @@
{"kind":"response","method":"initialize","payload":{"_meta":{"steering":{"supported":true}},"authMethods":[],"capabilities":{"_meta":{"authStatus":{},"claudeCode":{"promptQueueing":true}}},"info":{"name":"@agentclientprotocol/claude-agent-acp","title":"Claude Agent","version":"<version>"},"protocolVersion":2}}
{"kind":"response","method":"session/new","payload":{"configOptions":[{"category":"mode","configId":"mode","currentValue":"default","description":"Session permission mode","name":"Mode","options":[{"description":"Always ask before making changes","name":"Manual","value":"default"},{"description":"Automatically accept all file edits","name":"Accept edits","value":"acceptEdits"},{"description":"Create a plan before making changes","name":"Plan","value":"plan"},{"description":"Claude handles permission decisions","name":"Auto","value":"auto"},{"description":"Accepts all permissions","name":"Bypass permissions","value":"bypassPermissions"}],"type":"select"},{"category":"model","configId":"model","currentValue":"claude-sonnet-4-6","description":"AI model to use","name":"Model","options":[{"description":"Fast","name":"Claude Sonnet 4.6","value":"claude-sonnet-4-6"}],"type":"select"}],"sessionId":"<session>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"availableCommands":[{"description":"Show the MCP servers and their status, or reconnect, enable, or disable a server","input":{"hint":"[reconnect|enable|disable [<server>|all]]","type":"text"},"name":"mcp"}],"sessionUpdate":"available_commands_update"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"content":[{"text":"prompt 1","type":"text"}],"messageId":"<id-1>","sessionUpdate":"user_message"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"sessionUpdate":"state_update","state":"running"}}}
{"kind":"response","method":"session/prompt","payload":{"messageId":"<id-1>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"compact"}},"kind":"think","sessionUpdate":"tool_call_update","status":"in_progress","title":"Compact conversation","toolCallId":"00000000-0000-4000-8000-000000000001"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"compact"}},"content":[{"content":{"text":"Compaction failed: Context too small","type":"text"},"type":"content"}],"rawOutput":{"error":"Context too small"},"sessionUpdate":"tool_call_update","status":"failed","toolCallId":"00000000-0000-4000-8000-000000000001"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"quota":{"model_usage":[],"token_count":{"cachedInputTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"reasoningOutputTokens":0,"totalTokens":0}}},"sessionUpdate":"state_update","state":"idle","stopReason":"end_turn","usage":{"cachedReadTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"totalTokens":0}}}}

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@@ -0,0 +1,12 @@
{"kind":"response","method":"initialize","payload":{"_meta":{"steering":{"supported":true}},"authMethods":[],"capabilities":{"_meta":{"authStatus":{},"claudeCode":{"promptQueueing":true}}},"info":{"name":"@agentclientprotocol/claude-agent-acp","title":"Claude Agent","version":"<version>"},"protocolVersion":2}}
{"kind":"response","method":"session/new","payload":{"configOptions":[{"category":"mode","configId":"mode","currentValue":"default","description":"Session permission mode","name":"Mode","options":[{"description":"Always ask before making changes","name":"Manual","value":"default"},{"description":"Automatically accept all file edits","name":"Accept edits","value":"acceptEdits"},{"description":"Create a plan before making changes","name":"Plan","value":"plan"},{"description":"Claude handles permission decisions","name":"Auto","value":"auto"},{"description":"Accepts all permissions","name":"Bypass permissions","value":"bypassPermissions"}],"type":"select"},{"category":"model","configId":"model","currentValue":"claude-sonnet-4-6","description":"AI model to use","name":"Model","options":[{"description":"Fast","name":"Claude Sonnet 4.6","value":"claude-sonnet-4-6"}],"type":"select"}],"sessionId":"<session>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"availableCommands":[{"description":"Show the MCP servers and their status, or reconnect, enable, or disable a server","input":{"hint":"[reconnect|enable|disable [<server>|all]]","type":"text"},"name":"mcp"}],"sessionUpdate":"available_commands_update"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"content":[{"text":"prompt 1","type":"text"}],"messageId":"<id-1>","sessionUpdate":"user_message"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"sessionUpdate":"state_update","state":"running"}}}
{"kind":"response","method":"session/prompt","payload":{"messageId":"<id-1>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"compact"}},"kind":"think","sessionUpdate":"tool_call_update","status":"in_progress","title":"Compact conversation","toolCallId":"00000000-0000-4000-8000-000000000001"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"compact"}},"sessionUpdate":"tool_call_update","status":"in_progress","toolCallId":"00000000-0000-4000-8000-000000000001"}}}
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{"kind":"response","method":"session/prompt","payload":{"messageId":"<id-1>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"TaskOutput"}},"content":[],"kind":"other","name":"TaskOutput","rawInput":{},"sessionUpdate":"tool_call_update","status":"pending","title":"TaskOutput","toolCallId":"toolu_out"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"TaskOutput"}},"rawInput":{"task_id":"bash_1"},"sessionUpdate":"tool_call_update","toolCallId":"toolu_out"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":3}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"TaskOutput"}},"rawInput":{"block":true,"task_id":"bash_1"},"sessionUpdate":"tool_call_update","toolCallId":"toolu_out"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"TaskOutput"}},"content":[{"content":{"text":"<retrieval_status>success</retrieval_status>\n<output>done</output>","type":"text"},"type":"content"}],"rawOutput":"<retrieval_status>success</retrieval_status>\n<output>done</output>","sessionUpdate":"tool_call_update","status":"completed","toolCallId":"toolu_out"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"TaskStop"}},"content":[],"kind":"other","name":"TaskStop","rawInput":{},"sessionUpdate":"tool_call_update","status":"pending","title":"TaskStop","toolCallId":"toolu_stop"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":3}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"TaskStop"}},"rawInput":{"task_id":"bash_1"},"sessionUpdate":"tool_call_update","toolCallId":"toolu_stop"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"TaskStop"}},"content":[{"content":{"text":"Successfully stopped task: bash_1","type":"text"},"type":"content"}],"rawOutput":"Successfully stopped task: bash_1","sessionUpdate":"tool_call_update","status":"completed","toolCallId":"toolu_stop"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"cost":{"amount":0,"currency":"USD"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"quota":{"model_usage":[],"token_count":{"cachedInputTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"reasoningOutputTokens":0,"totalTokens":0}}},"sessionUpdate":"state_update","state":"idle","stopReason":"end_turn","usage":{"cachedReadTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"totalTokens":0}}}}

View File

@@ -0,0 +1,16 @@
{"kind":"response","method":"initialize","payload":{"_meta":{"steering":{"supported":true}},"authMethods":[],"capabilities":{"_meta":{"authStatus":{},"claudeCode":{"promptQueueing":true}}},"info":{"name":"@agentclientprotocol/claude-agent-acp","title":"Claude Agent","version":"<version>"},"protocolVersion":2}}
{"kind":"response","method":"session/new","payload":{"configOptions":[{"category":"mode","configId":"mode","currentValue":"default","description":"Session permission mode","name":"Mode","options":[{"description":"Always ask before making changes","name":"Manual","value":"default"},{"description":"Automatically accept all file edits","name":"Accept edits","value":"acceptEdits"},{"description":"Create a plan before making changes","name":"Plan","value":"plan"},{"description":"Claude handles permission decisions","name":"Auto","value":"auto"},{"description":"Accepts all permissions","name":"Bypass permissions","value":"bypassPermissions"}],"type":"select"},{"category":"model","configId":"model","currentValue":"claude-sonnet-4-6","description":"AI model to use","name":"Model","options":[{"description":"Fast","name":"Claude Sonnet 4.6","value":"claude-sonnet-4-6"}],"type":"select"}],"sessionId":"<session>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"availableCommands":[{"description":"Show the MCP servers and their status, or reconnect, enable, or disable a server","input":{"hint":"[reconnect|enable|disable [<server>|all]]","type":"text"},"name":"mcp"}],"sessionUpdate":"available_commands_update"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"content":[{"text":"prompt 1","type":"text"}],"messageId":"<id-1>","sessionUpdate":"user_message"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"sessionUpdate":"state_update","state":"running"}}}
{"kind":"response","method":"session/prompt","payload":{"messageId":"<id-1>"}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"content":[],"kind":"execute","name":"Bash","rawInput":{},"sessionUpdate":"tool_call_update","status":"pending","title":"Terminal","toolCallId":"toolu_slow"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"sessionUpdate":"usage_update","size":200000,"used":3}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"rawInput":{"command":"make"},"sessionUpdate":"tool_call_update","title":"make","toolCallId":"toolu_slow"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash","toolResponse":{"elapsedTimeSeconds":1}}},"sessionUpdate":"tool_call_update","status":"in_progress","toolCallId":"toolu_slow"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash","toolResponse":{"elapsedTimeSeconds":2}}},"sessionUpdate":"tool_call_update","toolCallId":"toolu_slow"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash","toolResponse":{"elapsedTimeSeconds":3}}},"sessionUpdate":"tool_call_update","toolCallId":"toolu_slow"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"claudeCode":{"toolName":"Bash"}},"content":[{"content":{"text":"```console\nbuilt\n```","type":"text"},"type":"content"}],"rawOutput":"built","sessionUpdate":"tool_call_update","status":"completed","toolCallId":"toolu_slow"}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"_claude/model":"claude-sonnet-4-6"},"cost":{"amount":0,"currency":"USD"},"sessionUpdate":"usage_update","size":200000,"used":2}}}
{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"_meta":{"quota":{"model_usage":[],"token_count":{"cachedInputTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"reasoningOutputTokens":0,"totalTokens":0}}},"sessionUpdate":"state_update","state":"idle","stopReason":"end_turn","usage":{"cachedReadTokens":0,"cachedWriteTokens":0,"inputTokens":0,"outputTokens":0,"totalTokens":0}}}}

View File

@@ -926,9 +926,64 @@ describe("ACP v2 session translation", () => {
});
it("fails on session updates that it does not translate yet", () => {
expect(() => v2SessionUpdate({ sessionUpdate: "plan", entries: [] })).toThrow(
"does not translate plan session updates yet",
);
});
it("reports a new tool call with an upserting tool_call_update", () => {
expect(
v2SessionUpdate({
sessionUpdate: "tool_call",
toolCallId: "t",
title: "Read",
name: "Read",
kind: "read",
status: "pending",
content: [{ type: "content", content: text("a.ts")[0] }],
locations: [{ path: "/p/a.ts" }],
}),
).toEqual({
sessionUpdate: "tool_call_update",
toolCallId: "t",
title: "Read",
name: "Read",
kind: "read",
status: "pending",
content: [{ type: "content", content: text("a.ts")[0] }],
locations: [{ path: "/p/a.ts" }],
});
});
it("leaves out the null fields of a tool call update, which v2 would clear", () => {
// In v1, null leaves a tool call field unchanged; in v2 it clears it.
expect(
v2SessionUpdate({
sessionUpdate: "tool_call_update",
toolCallId: "t",
status: "completed",
title: null,
name: null,
content: null,
locations: null,
rawOutput: null,
_meta: null,
}),
).toEqual({ sessionUpdate: "tool_call_update", toolCallId: "t", status: "completed" });
// An empty array still clears, in both.
expect(
v2SessionUpdate({ sessionUpdate: "tool_call_update", toolCallId: "t", content: [] }),
).toEqual({ sessionUpdate: "tool_call_update", toolCallId: "t", content: [] });
});
it("fails on tool call content that it does not translate yet", () => {
expect(() =>
v2SessionUpdate({ sessionUpdate: "tool_call", toolCallId: "t", title: "Read" }),
).toThrow("does not translate tool_call session updates yet");
v2SessionUpdate({
sessionUpdate: "tool_call_update",
toolCallId: "t",
content: [{ type: "diff", path: "/p/a.ts", oldText: "a", newText: "b" }],
}),
).toThrow("does not translate diff tool call content yet");
});
it("keeps the audience roles of a prompt block that v1 knows", () => {

View File

@@ -5,6 +5,7 @@
import * as v2 from "@agentclientprotocol/sdk/experimental/v2";
import type { AcpSessionNotification } from "../acp-subagents.js";
import { v2AvailableCommands, v2ConfigOptions } from "./session.js";
import { v2ToolCallUpdate } from "./tool-call.js";
/**
* The v2 form of a v1 session update, or `undefined` when v2 has no
@@ -35,6 +36,9 @@ export function v2SessionUpdate(
}
return { ...chunk, messageId };
}
case "tool_call":
case "tool_call_update":
return v2ToolCallUpdate(update);
case "current_mode_update":
// v2 has no modes: the mode is the `mode` config option. Every mode
// change also reaches the client as a `config_option_update` or in the

48
src/v2/tool-call.ts Normal file
View File

@@ -0,0 +1,48 @@
/**
* The v2 form of the tool call reports that `ClaudeAcpAgent` sends as v1
* `tool_call` and `tool_call_update` updates.
*/
import type { ToolCall, ToolCallContent, ToolCallUpdate } from "@agentclientprotocol/sdk";
import type * as v2 from "@agentclientprotocol/sdk/experimental/v2";
type V1ToolCallReport =
| (ToolCall & { sessionUpdate: "tool_call" })
| (ToolCallUpdate & { sessionUpdate: "tool_call_update" });
type V2ToolCallUpdate = v2.ToolCallUpdate & { sessionUpdate: "tool_call_update" };
/**
* The v2 form of a v1 tool call report.
*
* v1 reports a new tool call with `tool_call` and changes it with
* `tool_call_update`; v2 has one `tool_call_update` that upserts by
* `toolCallId`. Both leave a field that a report omits unchanged, and both
* replace `content` and `locations` as whole arrays. They differ on `null`:
* in v1 it leaves the field unchanged too, in v2 it clears the field, so `null`
* fields are left out.
*
* Diff and terminal content throw until the v2 surface translates them
* (step 4 of `docs/acp-v2.md`).
*/
export function v2ToolCallUpdate(report: V1ToolCallReport): V2ToolCallUpdate {
const patch = Object.fromEntries(
Object.entries(report).filter(
([key, value]) => value !== null && key !== "sessionUpdate" && key !== "content",
),
) as Omit<V2ToolCallUpdate, "sessionUpdate" | "content">;
return {
...patch,
sessionUpdate: "tool_call_update",
...(report.content != null ? { content: report.content.map(v2ToolCallContent) } : {}),
};
}
function v2ToolCallContent(item: ToolCallContent): v2.ToolCallContent {
switch (item.type) {
case "content":
// v2 content blocks are a superset of the v1 blocks.
return item;
default:
throw new Error(`The ACP v2 surface does not translate ${item.type} tool call content yet`);
}
}