A paired client may drop a mirrored terminal on exactly two kinds of host evidence: a `retiredTerminalSurfaces` proof naming the handle, or two authoritative `terminal.list` inventories that omit it. The second needs two host publications, and a quiet workspace publishes one, so the proof is the only evidence that rides the frame carrying the retraction. That proof was minted only as a byproduct of persistence *accepting a change*, which made one value carry two meanings: "a change was accepted" and "the PTY exited". The host renderer's close transaction de-persists the surface and republishes without it, so when it got there first the exit found nothing left to accept and the attestation died with it. Measured on a real paired client: the host retracted in under 500ms, published no proof, then froze its snapshotVersion for 60s while the client kept a dead pane in its tab bar. Persistence still gates *removal* — publishing absence before the membership fence is durable would let a crash resurrect the surface. It no longer gates the proof: the observed exit is itself the attestation. The exit-first ordering already had a passing test; the renderer-first ordering had none, and that is the one users hit. Both orderings are now pinned, with exit-first as the control that makes the renderer-first failures mean something. Wire: `retiredTerminalSurfaces` is an existing optional field on an existing path, already negotiated as `session-tabs.retirement-proof-delta.v1`. This is Rule 1 — an old client that ignores it degrades to the two-inventory route it already uses today, so no capability gate is needed. The sentence "the host starts sending a frame it did not send before" reads like Rule 3; it is not, because the frame shape, the field, and the reader contract are all unchanged.
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
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.
-
Twitter / X: Follow @orca_build for updates and announcements.
-
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.
-
Privacy: See the privacy & telemetry docs for what anonymous usage data Orca collects and how to opt out.
-
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.












