`isReplay` is necessary but NOT sufficient, and the binary says so. Verified in
claude 2.1.237: the model-switch breadcrumb is enqueued as
`{type:'user', parent_tool_use_id:null, isReplay:true}` whose content is the
string `<local-command-stdout>Set model to ...`. Orca triggers that path itself
from the model picker (setClaudeStructuredOption sends set_model, and reconnect
replays it), so a send in flight during a model switch adopted the breadcrumb's
uuid and the real echo appended a second row.
The CLI cannot use the marker alone either - its own RemoteSessionManager
filters the same frames by content prefix:
isReplay"in e&&e.isReplay===!0&&typeof e.message?.content==="string"
&&e.message.content.startsWith(cvl) // "<local-command-stdout>Set model to "
-> "Dropped own set_model breadcrumb echo"
So: require the marker, then reject the harness shapes with the existing
isKnownHarnessInjectedUserTurnText. This is the classifier an earlier round
deleted - but as a NARROWING on top of the marker, not a fallback instead of
it, and now on primary evidence rather than speculation.
Also stop discarding an identity the replay already claimed: a write can reach
Claude and still reject on the following flush, and reporting `unknown` there
stranded a uuid nothing else could adopt.
Found by the review loop on #15657.
Orca
中文 · 日本語 · 한국어 · Español · Français · Português
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 0.0.42
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.
-
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.










