Files
tai/research/cap-protocol/acp-introduction.md
T
retoor cc1c130b51 CAP protocol both directions: agent speak plus orchestrator drivers (1.39.0)
- 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
2026-10-18 13:17:35 +02:00

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1.5 KiB
Markdown

# ACP introduction and architecture
## Metadata
| Field | Value |
|---|---|
| Institute | Molodetz Institute — Research & Retrieval Division |
| Subject | cap-protocol |
| Document type | Source Dossier |
| Tier | 1 |
| Source title | ACP Introduction |
| Source URL | https://agentclientprotocol.com/get-started/introduction.md |
| Source type | documentation |
| Source date (published) | Unknown, not stated (living docs) |
| Date researched | 2026-10-18 |
| Researched by | tai (agent), model: Muse Spark, on behalf of retoor |
| Research method | direct page fetch, read in full |
| Confidence | High |
| Status | Active |
## Summary
ACP standardizes editor-to-agent communication (LSP analogy): local agents run as editor subprocesses over JSON-RPC stdio; remote agents over HTTP/WebSocket (remote support still in progress). Reuses MCP JSON shapes where possible; user text defaults to Markdown.
## Key findings
- Local = subprocess + JSON-RPC over stdio is the stable, specified path; remote is explicitly work-in-progress, so tai's ACP binding targets stdio only.
- Markdown as the default user-text format aligns with tai's TUI rendering.
## Pros / strengths
- Confirms stdio as the SHOULD-support transport, matching CAP's ACP-stdio binding exactly.
## Cons / limitations / caveats
- Positioning page only; no wire detail (covered by the sibling dossiers).
## Relevance to tai
Scopes tai's ACP binding to local stdio and records why remote ACP is out of scope.
## Changelog
| Date | Change |
|---|---|
| 2026-10-18 | Initial dossier created. |