The mirror of the children-axis rule, one axis over. Recognition used to read
`recognizeAgentProcess(result.foregroundProcess)`. Moving it onto the evidence
union made it read `evidence.foreground.processName`, so a sample whose union
reports `{observed, processName: null}` beside a legacy `foregroundProcess:
'codex'` no longer recognizes an agent. Its foreground verdict is still inside
the vocabulary, so the out-of-vocabulary guard cannot refuse it either, and the
sample falls through to the exit gate and dispatches a process-exit completion
for an agent the host still names in the foreground.
Only the `null` pole of the legacy scalar is the lossy collapse this batch
removes; it conflates "no agent in the foreground" with "could not ask". A
recognized non-null name is a positive observation on every producer:
buildPtyProcessInspectionWireResult copies it straight off an `observed`
foreground verdict, and the ps/pgrep probes only set it from a command line the
host actually read back. Discarding a positive liveness observation to honour a
union reporting no name is the #16900/#16908 polarity bug on the foreground
axis, so the gate now refuses whenever either half still names an agent.
The refusal is added at the exit gate rather than by widening recognition, so
the arm can only ever withhold a dispatch, never introduce one: reading the
legacy name into handleRecognizedProcess would fire a process-replacement
completion on a disagreeing name, which is less conservative, not more.
No conforming host is affected. To reach the gate the foreground verdict is
already 'observed', so buildPtyProcessInspectionWireResult's legacy scalar is
byte-identical to the union's processName the gate already found unrecognized,
and a host predating the field gets that same scalar through the reader's legacy
fallback. Only a peer this client cannot vouch for can disagree, the same
premise the children-axis arm is pinned on.
Pinned by four monitor tests through the real reader with no mock; all four fail
on the previous head, each with an actual false process-exit completion for
'codex'. The four-way ablation keeps the arms independent: reverting only this
term reddens its four tests and leaves the vocabulary-guard, positive-exited and
legacy-live-children pins green.
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 0.0.46 · 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 7. If it is full, use group 8.
-
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.
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.












