Files

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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ACP session setup (session/new)

Metadata

Field	Value
Institute	Molodetz Institute — Research & Retrieval Division
Subject	cap-protocol
Document type	Source Dossier
Tier	1
Source title	ACP Session Setup
Source URL	https://agentclientprotocol.com/protocol/v1/session-setup.md
Source type	specification
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, targeted read (session/new request/response; load-session section skimmed)
Confidence	High
Status	Active

Summary

Session creation: session/new with {cwd, mcpServers: []} returns {sessionId}; agents advertising loadSession also accept session/load for resume. Tai needs only the create path.

Key findings

session/new params are exactly {cwd, mcpServers} (servers carry name/command/args/env); tai sends an empty server list.
Result carries only sessionId, the correlation key for every later call.
Resume via session/load exists but tai sessions are single-connection; not implemented.

Pros / strengths

Trivial handshake; no negotiation beyond initialize.

Cons / limitations / caveats

Targeted read; auth and load-session details not synthesized.

Relevance to tai

Exact session/new shapes for the ACP driver handshake.

Changelog

Date	Change
2026-10-18	Initial dossier created.

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