Brennan Benson
020cebeff6
* Add standalone ACP protocol client and session runtime * Protect ACP transport teardown from late stream errors * Retire incoming ACP request ids before publishing responses * Narrow ACP configuration requests and transport message types * Remove redundant ACP request handler return unions * Keep ACP waits caller-owned and preserve protocol extensions * Preserve open ACP decisions through prompt completion * Generate open ACP enums and check the generated schema offline A newer or vendor enum value (tool kind, tool status, option kind, stop reason) no longer fails the whole message: generated enums accept the known literals plus any other string, typed so callers can still narrow on the known ones. The generated header now records the pinned input digests, the generator digest and a body hash, so `verify:acp-protocol` catches a stale or hand-edited file without network access; it runs in lint and the PR workflow. * Land the ACP runtime contract the agent adapters use - Deliver notifications other than session/update through onExtensionNotification, in arrival order with session updates. - Accept _meta on prompt, setMode, setModel, setConfigOption and cancel. - cancel() always sends session/cancel once the session runs, since the agent can be in a turn it began itself; only a successful send is shared, so a failed write is retried. - Cancel aborts each open agent request's signal and lets its handler send its own answer; -32800 only when the handler rejects. - Permission requests validate only the session, tool call id and options; unreadable fields are dropped with a diagnostic, and any answer Orca cannot send is `cancelled` instead of a JSON-RPC error. Agent-started turns may ask; whether to show it is the caller's decision. - AcpAgentError marks the agent's own errors; AcpInvalidResponseError keeps the raw answer and validation issues for answers Orca could not read. - Lines over the size limit are classified by prefix (shared with the Codex reader): the owed request fails, an oversized agent request is answered with an error, and an unattributable response closes the connection. * Answer every agent request after an ACP cancel A cancel that lands before a permission handler starts now still runs the permission path, so the agent gets the `cancelled` outcome rather than a request-cancelled error. A handler that ignores the abort no longer leaves the agent waiting: once the abort has run through, any request still unanswered gets request-cancelled. Handlers that answer on abort keep their own reply. Also renames a lint-rejected helper parameter, replaces a Reflect.apply in a test, and stops the permission diagnostic from firing with an empty list. * Let each ACP request handler own its answer after a cancel Removes the next-event-loop-turn fallback that answered request-cancelled for any handler still silent after a cancel. It raced answers that were still being saved (an approval mid-journal-write reached the agent as an error) and made the outcome depend on event-loop timing. The handler that owns an agent request now always sends its answer, or throws for request-cancelled; a request it never answers ends when the connection closes. A permission whose handler had not started still answers `cancelled`. * Register the ACP schema verify step in the PR preflight phase test * feat(acp): a steer's cancel asks once and never ends the agent The runtime had one cancel: send session/cancel, wait at most 10 s for Orca's prompt to settle, then close the connection, which ends the agent. A steer used it too, so a slow agent lost its process just because the person added a message. requestSteerCancel() now sends session/cancel once per prompt, cancels the agent's open requests and answers later permissions cancelled, and never bounds or closes: the prompt's own reply ends it and the steer's prompt follows. cancel() stays the Stop: bounded, then close. A Stop after a steer still bounds and closes. Both cancel paths move into acp-prompt-cancel.ts over one cancel channel. * fix(acp): a repeated steer shares the cancel in flight; say what the caller owns Per review: a second steer before the first write lands returns that write instead of resolving early. The steer's JSDoc says the wait for the prompt's reply is unbounded and that a prompt that fails instead must not take the steer until the caller rebuilds the session; the Stop's says a prompt that settles in time leaves the agent for the Stop's owner to end. The steer test now gives the runtime a handler that would allow: the open permission's signal aborts and the late one never reaches it. * test(ratchet): require src/main/acp now that this PR lands it
Orca
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The AI Orchestrator for 100x builders.
Run Codex, ClaudeCode, OpenCode or Pi side-by-side — each in its own worktree, tracked in one place.
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Features
Mobile CompanionMonitor and steer your agents from your phone — get notified when an agent finishes and send follow-ups from anywhere. |
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Parallel WorktreesFan one prompt across five agents, each in its own isolated git worktree — compare the results and merge the winner. |
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Terminal SplitsGhostty-class terminals with WebGL rendering, infinite splits, and scrollback that survives restarts. |
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Design ModeClick any UI element in a real Chromium window to send its HTML, CSS, and a cropped screenshot straight into your agent's prompt. |
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GitHub & Linear, NativeBrowse PRs, issues, and project boards in-app — open a worktree from any task and review without a context switch. |
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SSH WorktreesRun agents on a beefy remote box with full file editing, git, and terminals — auto-reconnect and port forwarding included. |
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Annotate AI DiffsDrop comments on any diff line and ship them back to the agent — review, edit, and commit without leaving Orca. |
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Drag Files to AgentsVS Code's editor with autosave everywhere — drag files or images straight into an agent prompt. |
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Orca CLIAgents drive Orca too — script every workflow with |
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Also in the box:
- Quick open — Search across worktrees, files, agents, commands, and repo context without leaving your flow.
- Account switcher & usage tracking — See Claude and Codex usage and rate-limit resets, and hot-swap accounts without re-logging in.
- Rich repo previews — Preview Markdown, images, PDFs, and repo docs in the workspace.
- Computer Use — Let agents operate desktop apps and visible UI when a workflow needs real interaction.
- Notifications and unread state — Know when an agent finishes or needs attention, then mark threads unread to come back later.
- And many, many more — we ship daily, so this list is perpetually behind. The changelog is the real feature list.
Supported Agents
Works with any CLI agent — if it runs in a terminal, it runs in Orca.
Claude Code
Codex
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Cursor
GitHub Copilot
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Amp
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oh-my-pi
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Goose
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Charm
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CodeBuddy
Codebuff
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Command Code
Continue
Droid
Kilocode
Kimi
Kiro
Mistral Vibe
Qwen Code
Rovo Dev
+ any CLI agent
Install
Desktop — macOS, Windows, Linux
- Download from onOrca.dev
- Or grab a build directly: macOS Apple Silicon · macOS Intel · Windows (.exe) · Linux AppImage · All builds
- Running
orca serveon a headless Linux server? See the headless Linux server guide.
Or via a package manager:
# macOS (Homebrew)
brew install --cask stablyai/orca/orca
# Arch Linux (AUR) — or stably-orca-git to build from source
yay -S stably-orca-bin
Mobile Companion — iOS, Android
Pair with your desktop app to monitor and steer your agents from your phone.
- iOS: Download on the App Store
- Android: Download APK 0.0.52 · Install guide
Community & Support
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Twitter / X: Follow @orca_build for updates and announcements.
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WeChat: Scan to join the Orca community WeChat group 11.
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Feedback & Ideas: We ship fast. Missing something? Request a new feature.
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Privacy: See the privacy & telemetry docs for what anonymous usage data Orca collects and how to opt out.
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Show Support: Star this repo to follow along with our daily ships.
Developing
Want to contribute or run locally? See our CONTRIBUTING.md guide.
The relay that pairs the mobile app with a desktop host is also in this repository under
cloud/, with a separate pnpm workspace and setup guide.
Signed Builds
Windows code signing sponored/provided by SignPath.io, certificate by SignPath Foundation.
License
Orca is free and open source under the MIT License.