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[Feature]: OMP in structured native chat (via omp --mode rpc) #22650
Description
What
Support OMP in the structured native chat runtime, not only the terminal-backed chat path.
Current behavior (v1.4.210)
ompis inNATIVE_CHAT_SUPPORTED_AGENT_LIST, but only via the terminal-backed path (transcript read locally,nativeChatRequiresLocalTranscript('omp') === true).- Structured chat is limited to Claude and Codex:
isAgentSessionHandleProvideraccepts only'claude' | 'codex', so OMP launches resolve toagent-without-structured-session. - Result: OMP chat in Orca feels noticeably less fluid than Claude/Codex structured chat (streaming, turn boundaries, tool rows).
Why it's feasible
OMP ships a headless, structured protocol — no PTY scraping needed:
omp --mode rpcspeaks JSONL over stdio: emitsready(protocolVersion 1, supported [1,2]),available_commands_update(slash commands), and answers commands such asget_state(active model, context window, thinking config).rpc-uimode also exists for UI-level requests.
Tested with omp 18.3.0 on macOS.
Other GUIs already drive OMP this way with streamed thinking in the transcript (e.g. MonoCode).
Ask
- Add an
ompstructured session provider backed byomp --mode rpc, or - Ship the generic third-party adapter contract proposed in Native chat for third-party agents: pi (pi-coding-agent) adapter / public session-host contract #21558 and make OMP one of its first adapters.
Related
- Native chat for third-party agents: pi (pi-coding-agent) adapter / public session-host contract #21558 — native chat for third-party agents / session-host contract
- test: add a verified OMP native-chat mock scenario #20655 — verified OMP native-chat mock scenario
Activity
nwparker commentedon Oct 18, 2026
Implemented by merged #26401 (commit 2caea6c, October 8): OMP now has a registered structured-session provider over the shared ACP adapter lane, using
omp acp. That fulfills the generic-adapter alternative here rather than adding a separateomp --mode rpcpath.With Use updated structured native chat enabled and OMP 17.0.5 or later, OMP opens in structured Chat with streamed replies, tool rows, permission cards, Stop and restart/reopen support. Older versions or the setting off retain terminal-backed Chat.
I verified the current launch spec and reran its launch, recorded-protocol and dialect suites: all 27 tests pass. The merged PR includes real OMP checks on macOS; it does not establish live Windows/Linux/SSH/mobile coverage.