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98b17c28c8
Step 4's last session piece for opt-in ACP v2 support (after #1237, #1238). The v2 surface now serves the whole v2 session baseline, so its `initialize` response advertises `capabilities.session`. Until now a conforming v2 client wouldn't call the session methods. Nothing changes on ACP v1, and the v2 surface stays behind `CLAUDE_AGENT_ACP_EXPERIMENTAL_V2`. ## Change `V2_SESSION_CAPABILITIES` is a constant, since it describes what the v2 surface serves: - **the session baseline:** `session/new`, `list`, `resume` (with replay since #1237), `close`, `prompt`, `cancel`, and `update`; - **`session/delete` and `additionalDirectories`.** Not `session/fork` yet, which v1 advertises but the v2 surface doesn't serve; - **prompt content and MCP transports,** as the agent's v1 `initialize` lists them: images and embedded context; stdio and HTTP servers. v2 has no SSE transport. The top-level `_meta` (`promptQueueing`, `authStatus`) passes through as before. `providers` stays unadvertised. Every v2 golden file changes on its `initialize` line only. ## Release Titled `refactor:` like the other v2 PRs, so it triggers no release on its own. This is the point where the v2 surface becomes usable by a conforming client, so `feat:` would also fit if you want the next release to be a minor one. ## Verification The handshake test pins the advertised capabilities, the schema check validates every recorded `initialize` response, and build, lint and all 2386 tests pass.
10 lines
3.2 KiB
JSON
Generated
10 lines
3.2 KiB
JSON
Generated
{"kind":"response","method":"initialize","payload":{"_meta":{"steering":{"supported":true}},"authMethods":[],"capabilities":{"_meta":{"authStatus":{},"claudeCode":{"promptQueueing":true}},"session":{"additionalDirectories":{},"delete":{},"mcp":{"http":{},"stdio":{}},"prompt":{"embeddedContext":{},"image":{}}}},"info":{"name":"@agentclientprotocol/claude-agent-acp","title":"Claude Agent","version":"<version>"},"protocolVersion":2}}
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{"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>"}}
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{"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"}}}
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{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"content":[{"text":"prompt 1","type":"text"}],"messageId":"<id-1>","sessionUpdate":"user_message"}}}
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{"kind":"notification","method":"session/update","payload":{"sessionId":"<session>","update":{"sessionUpdate":"state_update","state":"running"}}}
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{"kind":"response","method":"session/prompt","payload":{"messageId":"<id-1>"}}
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{"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"}}}
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{"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"}}}
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{"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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