OrcaWinandOrca Worker
c252d855ac
* fix(windows): resolve npm/pnpm .cmd shims past cmd.exe
A `.cmd` target forces every spawn through `cmd.exe /c` with each argument
caret-escaped, and Microsoft Defender for Endpoint scores a long `cmd.exe /c`
line carrying caret-escaped natural language as obfuscation. `codex.cmd` is
named in the spawn cluster of the MDE incident this addresses.
npm's `cmd-shim` and pnpm's `@zkochan/cmd-shim` generate files whose whole body
is "find node, run this script". Read one, and the spawn can go straight to
`node.exe <script> <args>` — no cmd.exe, no caret escaping. Anything the parser
does not recognise exactly, or whose target cannot be confirmed on disk, keeps
the existing cmd.exe path.
Incidentally fixes a real bug: cmd ends its command at a raw CR/LF whatever the
quote state, so a multi-line agent prompt through a `.cmd` shim had to be
rejected. Resolved shims have no such limit.
* fix(windows): refuse drive-relative shim paths and run the win32 tests in CI
Two blocking findings from review.
A drive-relative path defeated the absolute-path guard:
`win32.isAbsolute('D:evil.js')` is false, but `win32.resolve` reads the drive
letter and lands on `D:\evil.js`, outside the shim directory. cmd would have
built `C:\shim\D:evil.js` and failed; we would have executed the wrong file.
Adding `:` to the unsafe-character set closes it, and the alternate-data-stream
spelling `a.js:zone` with it. It costs no coverage: 84 of the 91 real shims on
this box still resolve, the same seven fall back.
Neither `windows-cmd-shim-resolution.test.ts` nor its `.win32` sibling was in
the Windows package job's file list, so the whole filesystem/resolution half and
the real-spawn equivalence suite ran nowhere. Both are now in
`WINDOWS_PACKAGE_TESTS` and in the pr.yml step.
Also from review: clear `windowsVerbatimArguments` explicitly on the resolved
branch rather than inheriting it, since there is no caller-built command line
there; document the kill switch and the PTY/hook-wrapper scope limits in
docs/reference; and cover drive-relative, BOM, line-ending, casing and `%*`
tampering in the platform-independent half of the tests.
* docs(windows): justify the shim-path colon guard from the filesystem rule
The guard was argued empirically ("none of the 91 shims on this box has one"),
which invites a future reader to relax it for a shim we have not seen. Windows
reserves `:` within a path segment, so a relative path cannot carry one at all:
the only spellings that can are drive-qualified, an alternate data stream, or a
`\?\` device path, and the last is already refused as absolute. That makes a
false refusal impossible rather than unobserved.
* refactor(child-process): move resolveSpawn into its own module
The merge with main pushed run-process.ts one line past the 300-line cap:
both sides grew it. The spawn-argv decision is already a pure, separately
tested unit, so it moves out rather than the cap moving up. run-process.ts
re-exports it, so no caller changes.
* perf(child-process): cache the shim interpreter lookup
The parse cache spared the shim read but not the PATH walk, so a second
resolution of the same .cmd did 0 reads and one statSync per PATH entry --
30 on a 30-entry PATH, synchronous on resolveSpawn, where one dead network
mount blocks the calling thread on every spawn.
Keyed by shim directory AND PATH, since the shim's own rule is
%~dp0\node.exe first then PATH, and a PATH edit between spawns must miss.
Corrects the stat comment, which accounted only for the shim itself.
* fix(child-process): revalidate a cached shim interpreter before using it
The node cache was held for process life and never rechecked, so a cached
node.exe that was later uninstalled -- or dropped from PATH by a version
manager -- was still handed to resolveSpawn, failing the spawn with ENOENT.
An uncached process in the same state returns null and falls back to
cmd.exe successfully, so the cache was strictly worse than no cache.
One statSync on a non-null hit, not one per PATH entry, so the walk this
cache exists to skip is still skipped. The stale-null direction stays
uncorrected on purpose: it only keeps the working cmd.exe fallback. Both
directions are now stated in the comment, along with the known miss for
callers that vary PATH per spawn.
* fix(child-process): honour PATHEXT when resolving the shim interpreter
The doc claimed a node.com/.bat/.cmd on PATH returned null and fell back to
cmd.exe. The scan actually skipped those entries and kept looking for a
node.exe, so PATH=C:\A;C:\B with C:\A\node.com and C:\B\node.exe resolved to
B's node.exe while the shim runs A's node.com -- a different binary, chosen
silently, on the one axis this module must not get wrong.
The scan now follows cmd's rule: first PATH directory holding any PATHEXT
spelling wins, PATHEXT order decides within it, and only an .exe winner is
returned. Anything else gives up and keeps the cmd.exe path, which restores
the strict-subset-of-cmd property everywhere except the documented cwd case.
PATHEXT is read from the child's env and joined into the cache key, since it
now changes the answer. Costs one stat per PATHEXT entry per node-less
directory, paid once per process behind the cache.
---------
Co-authored-by: Orca Worker <orca-worker@localhost>
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
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Antigravity
Pi
oh-my-pi
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Devin
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Autohand Code
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Cline
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Continue
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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 0.0.47 · Install guide
Community & Support
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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.
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Windows code signing sponored/provided by SignPath.io, certificate by SignPath Foundation.
License
Orca is free and open source under the MIT License.