- Agent side: --cap-manifest plus --cap-speak stream-json binding with transcript-diff frames, diff/transcript artifacts, session config - Orchestrator: PTY driver (settle heuristics on PtyProc/TuiVtScreen), stream-json, ACP-stdio (permission/elicit/fs/terminal serving) and A2A drivers (dual draft/current spelling, SSE mapping) - Sessions, fleets: worktrees, master plans, mediated routing, budget refusal, audit log, research auto-answerer, --cap CLI - cap.md contract with drift tests; research/cap-protocol archive - Suites 1119 + 16 green
49 lines
1.9 KiB
Markdown
49 lines
1.9 KiB
Markdown
# ACP tool calls and permission flow
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## Metadata
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| Field | Value |
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| Institute | Molodetz Institute — Research & Retrieval Division |
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| Subject | cap-protocol |
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| Document type | Source Dossier |
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| Tier | 1 |
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| Source title | ACP Tool Calls |
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| Source URL | https://agentclientprotocol.com/protocol/v1/tool-calls.md |
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| Source type | specification |
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| Source date (published) | Unknown, not stated (living docs) |
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| Date researched | 2026-10-18 |
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| Researched by | tai (agent), model: Muse Spark, on behalf of retoor |
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| Research method | direct page fetch, read selectively (permission request/response, option kinds, statuses; content-block sections skimmed) |
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| Confidence | High |
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| Status | Active |
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## Summary
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Tool-call reporting (`tool_call` + `tool_call_update` keyed by `toolCallId`, statuses pending/in_progress/completed/failed) and the `session/request_permission` flow: agent offers options with kinds (allow_once/allow_always/reject_once/reject_always), client answers `selected` + optionId or `cancelled`.
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## Key findings
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- Permission option kinds map directly onto CAP's `allow_once`/`allow_always`/`deny` decisions (reject kinds collapse to deny).
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- Client MAY auto-allow/reject per user settings: tai's orchestrator auto-answer policy has a spec-sanctioned hook here.
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- Tool statuses are a 4-state lifecycle with no streaming-output state; output arrives via content on updates.
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## Pros / strengths
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- Small, closed vocabulary (4 kinds, 4 statuses, 2 outcomes) that translates to CAP events without loss.
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## Cons / limitations / caveats
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- Read selectively; diff/image/audio content-block variants skimmed, not synthesized.
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- No risk-level concept: tai must derive CAP `risk_level` from tool identity/args heuristically.
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## Relevance to tai
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Permission/response translation table for the ACP driver and the auto-approval hook for research-driven answers.
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## Changelog
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| Date | Change |
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| 2026-10-18 | Initial dossier created. |
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