Neil
23fa74bcbb
Node's `exec({ timeout })` SIGTERMs the child and then reports whatever the child
chose to do. A hook that traps SIGTERM and exits 0 — a graceful
`process.on('SIGTERM')` in a Node wrapper, an rsync wrapper cleaning up — comes
back with a NULL error, so a hook cut off mid-run is indistinguishable from one
that finished its work. Reproduced:
`exec("trap 'exit 0' TERM; sleep 5", { timeout: 200 })` yields no error.
`runHook` now owns the deadline. The verdict comes from running out of time
rather than from the corpse's exit code, and it is settled AT the deadline so a
hook that traps the signal and keeps running cannot hold its caller open. A
timeout withholds the exit code entirely: callers that distinguish "exited N"
from "outcome never observed" can now trust that distinction. The same applies
to a spawn failure, where `exec` reports a string code.
Termination reaches the process GROUP, because the script is a shell and the
work is its children — signalling only the shell leaves `sleep` or `rsync` alive
holding the pipes. The SIGKILL escalation probes the group with signal 0 first:
ESRCH means nothing is left to kill. Keying that on the direct child instead
would skip the escalation exactly when a hook has backgrounded something that
outlived its shell. The residual trade is stated at the call site — a recycled
pid answers the probe too, so the window is pid wraparound inside the grace.
One `classifyHookProcessResult` now serves both the native and WSL branches,
which had been mapping a finished process to a hook verdict by hand, identically.
This changes `setup` hooks as well as `archive` ones, since both share
`runHook`: a setup hook that backgrounds a long-running server now has that
server terminated with the rest of its group at the deadline, where previously it
was orphaned and survived.
Refs #19334
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.
Download Orca
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
Grok
Cursor
GitHub Copilot
OpenCode
MiMo Code
Amp
OpenClaude
Antigravity
Pi
oh-my-pi
Hermes Agent
Devin
Goose
Auggie
Autohand Code
Charm
Cline
Codebuff
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 or join TestFlight
- Android: Download APK 0.0.48 · Install guide
Community & Support
-
Discord: Join the community on Discord.
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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 8. Group 8 may be full; if so, scan the Group 9 QR code instead.
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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.