retoor
cc1c130b51
- 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
29 lines
1.5 KiB
Markdown
29 lines
1.5 KiB
Markdown
# CAP reference A2A driver (cap-rs a2a.rs)
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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 Citation Card |
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| Tier | 2 |
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| Source title | crates/cap-rs/src/driver/a2a.rs |
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| Source URL | https://github.com/rsclaw-ai/cap-protocol/blob/main/crates/cap-rs/src/driver/a2a.rs |
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| Source type | reference implementation |
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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 raw-file fetch, grepped for endpoint strings, request bodies, and the event-mapping core (not read in full) |
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| Confidence | High |
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| Status | Active |
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## Why it's here
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Grepped to settle which A2A spelling the reference driver actually uses: `POST {endpoint}/message/send` with `{message: {role, parts: [{kind: text, text}]}}` and `POST {endpoint}/tasks/cancel` with no body (draft-style), card at `/.well-known/agent-card.json` refused without the `cap-protocol/v1` extension. The event mapper accepts raw `cap.*` JSON, data parts unwrapped via `_meta.cap.kind` (from message, task-status and artifact parts alike), text parts (kind or type `text`, id from messageId/message_id), and failed task states; outbound answers travel as data parts with the `_meta.cap.kind` marker. Control flow around the mapper was not reviewed.
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## Changelog
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| Date | Change |
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| 2026-10-18 | Logged as consulted-but-not-analyzed. |
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