Addresses feedback #16 per DESIGN_DOC_STALE_BASE_FIX.md §0. Four v1 components coordinated by a single shared fetch cache on the runtime: 1. Concurrent-fetch-with-gate in UI create path: `createLocalWorktree` fires `git fetch` BEFORE the suffix loop / PR probe / path resolution, then awaits right before `addWorktree` so the new branch always spawns from a fresh remote tip. Renderer sees a two-phase spinner via the new `createWorktree:progress` IPC event. The cache is a `Map<repoPath::remote, Promise<void>>` + 30s success-only timestamp on `OrcaRuntimeService` (§7.1 — shared with dispatch). 2. Dispatch pre-flight drift guard in `Coordinator.dispatchTask`: probes `rev-list --left-right --count` against the target worktree and silently returns (preserves `ready`, no circuit-breaker burn) when `behind > 20` unless the task spec carries `allow-stale-base: true`. Parsing strips the flag so it never leaks into the worker's `--- TASK ---` block. 3. Preamble drift section: populated only when dispatch detected drift. Workers see `--- BASE DRIFT ---` with the N-most-recent subjects they don't have, so they can pull them in before running. 4. §3.3 Lifecycle: `.finally()` evicts Map entries on BOTH success and rejection; timestamp is written ONLY on success. Prevents a single DNS hiccup from wedging every future create on the repo until restart, and keeps the freshness window honest. Defers the DB `allow_stale_base` column (§0.2) and the create-time warn toast; both can layer in later without migration. Tests: 35 new/updated unit tests covering drift preamble, dispatch refusal, spec-text flag parsing, fetch Map eviction after rejection, freshness-window short-circuit, and concurrent-caller serialization. Co-authored-by: Orca <help@stably.ai>
Orca
The AI Orchestrator for 100x builders.
Run Claude Code, Codex, or OpenCode side-by-side across repos — each in its own worktree, tracked in one place.
Available for macOS, Windows, and Linux.
Supported Agents
Orca supports any CLI agent (not just this list).
Claude Code
Codex
Gemini
Pi
Hermes Agent
OpenCode
Goose
Amp
Auggie
Charm
Cline
Codebuff
Continue
Cursor
Droid
GitHub Copilot
Kilocode
Kimi
Kiro
Mistral Vibe
Qwen Code
Rovo Dev
Features
- No login required — Bring your own Claude Code or Codex subscription.
- Worktree-native — Every feature gets its own worktree. No stashing, no branch juggling. Spin up and switch instantly.
- Multi-agent terminals — Run multiple AI agents side-by-side in tabs and panes. See which ones are active at a glance.
- Built-in source control — Review AI-generated diffs, make quick edits, and commit without leaving Orca.
- GitHub integration — PRs, issues, and Actions checks linked to each worktree automatically.
- SSH support — Connect to remote machines and run agents on them directly from Orca.
- Notifications — Know when an agent finishes or needs attention. Mark threads unread to come back later.
Install
Mac, Linux, Windows
Alternatively, install from a package manager:
macOS (Homebrew)
brew install --cask stablyai/orca/orca
Arch Linux (AUR)
# Precompiled binary
yay -S stably-orca-bin
# Build from GitHub source
yay -S stably-orca-git
[New] Annotate AI Diff
Comment directly on AI-generated diffs.
Annotate any line in an AI-generated diff with your feedback, then send it back to the agent to revise. Keep the review loop tight — no copying line numbers, no context switching.
[New] Hot Swap Codex Accounts
Multiple Codex accounts? Switch in one click.
If you run multiple Codex accounts to get the best token deal, Orca lets you hot-swap between them instantly — no re-login, no config files. Just pick an account and keep building.
[New] Per Worktree Browser & Design Mode
See your app. Click any element. Drop it into the chat.
Orca ships with a built-in browser right inside your worktree. Preview your app as you build, then switch to Design Mode — click any UI element and it lands directly in your AI chat as context. No screenshots, no copy-pasting selectors. Just point at what you want to change and tell the agent what to do.
[New] Introducing the Orca CLI
Agent orchestration from your terminal.
Let your AI agent control your IDE. Use AI to add projects to your IDE, spin up worktrees, and update the current worktree's comment with meaningful progress checkpoints directly from the terminal. Ships with the Orca IDE (install under Settings).
npx skills add https://github.com/stablyai/orca --skill orca-cli
Community & Support
- Discord: Join the community on Discord.
- Twitter / X: Follow @orca_build for updates and announcements.
- Feedback & Ideas: We ship fast. Missing something? Request a new feature.
- Privacy: See PRIVACY.md 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.



