Neil 10bbcc2cd4 fix(ssh): corroborate an empty lsof answer before calling an endpoint free
#18304 decided enumerability after `lsof` runs, keying on stderr, non-numeric
output, and an abnormal exit. One failure carries none of those signals: probing
as a uid that does not own the socket's holder, `lsof -t -a -U <path>` exits 1
with no stdout and no stderr. Measured on Debian 12 against #18304's own probe, a
live relay owned by root probed as `nobody`:

  probe    uid      path         marker        pids
  merged   nobody   held.sock    lsof          []      <- live relay holds it
  merged   nobody   stale.sock   lsof          []      <- genuinely nobody
  merged   root     held.sock    lsof          [10]
  merged   root     stale.sock   lsof          []

The first two rows are byte-identical, so nothing about lsof's answer can
separate them. The first reaches `verdict: exited / evidence: no-holder`, which
`classifySupersededRelay` maps to `stale-endpoint-removed` and `rm -f` on an
inode a live relay is still holding. `hidepid=2` produces the same shape.

A positive control does not solve this. Controlling on something the probe itself
holds passes precisely when we are blind: as `nobody`, `lsof -t -p $$` returns a
pid while the socket query returns nothing. Blindness is to *other* uids, and
another uid's process is not ours to manufacture.

/proc/net/unix is. It is world-readable and lists every bound unix socket
regardless of owner, so an entry for the path alongside no reported pid proves
lsof was blind rather than that the path is free. Only an otherwise-clean empty
answer is corroborated; a reported pid still stands on its own, and the check is
skipped when the answer was already unavailable. Same run, with this change:

  fixed    nobody   held.sock    unavailable   []      <- no longer reapable
  fixed    nobody   stale.sock   lsof          []      <- still reapable
  fixed    root     held.sock    lsof          [10]    <- unchanged
  fixed    root     stale.sock   lsof          []      <- unchanged

The marker can only ever move from `lsof` toward `unavailable`, so this never
authorises an unlink that #18304 refuses.

Off Linux there is no /proc/net/unix, the check returns false, and behaviour is
exactly as before -- deliberately, because defaulting to `unavailable` there
would stop every macOS host from reaping a stale endpoint and trade a rare
destructive bug for a universal accumulation one. The tests are Linux-gated for
the same reason, with an assertion that the evidence they depend on is actually
present so the block cannot pass vacuously.
2026-09-14 00:17:08 -07:00
2026-09-14 01:05:07 +00:00
2026-05-04 20:42:03 -07:00
2026-03-16 22:27:51 -07:00
2026-03-28 10:19:14 -07:00

Orca Orca

GitHub stars Total downloads across all releases License: MIT Join the Orca Discord Follow Orca on X Supported platforms: macOS, Windows, and Linux

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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

Orca desktop app running agents in parallel worktrees, with the Orca mobile companion app in the corner

Features

Mobile Companion

Monitor and steer your agents from your phone — get notified when an agent finishes and send follow-ups from anywhere.

iOS App Store · TestFlight · Android APK 0.0.48 · Docs →

Orca desktop with the mobile companion app

Parallel Worktrees

Fan one prompt across five agents, each in its own isolated git worktree — compare the results and merge the winner.

Docs →

Parallel worktree orchestration

Terminal Splits

Ghostty-class terminals with WebGL rendering, infinite splits, and scrollback that survives restarts.

Docs →

Terminal splits

Design Mode

Click any UI element in a real Chromium window to send its HTML, CSS, and a cropped screenshot straight into your agent's prompt.

Docs →

Embedded browser and Design Mode

GitHub & Linear, Native

Browse PRs, issues, and project boards in-app — open a worktree from any task and review without a context switch.

Docs →

GitHub and Linear task workflows in Orca

SSH Worktrees

Run agents on a beefy remote box with full file editing, git, and terminals — auto-reconnect and port forwarding included.

Docs →

Remote worktrees over SSH

Annotate AI Diffs

Drop comments on any diff line and ship them back to the agent — review, edit, and commit without leaving Orca.

Docs →

Annotate AI-generated diffs

Drag Files to Agents

VS Code's editor with autosave everywhere — drag files or images straight into an agent prompt.

Docs →

Drag files and images into an agent prompt

Orca CLI

Agents drive Orca too — script every workflow with orca worktree create, snapshot, click, and fill.

Docs →

Script Orca from the CLI

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 logo Claude Code   Codex logo Codex   Grok logo Grok   Cursor logo Cursor   GitHub Copilot logo GitHub Copilot   OpenCode logo OpenCode   MiMo Code logo MiMo Code   Amp logo Amp   OpenClaude logo OpenClaude   Antigravity logo Antigravity   Pi logo Pi   oh-my-pi logo oh-my-pi   Hermes Agent logo Hermes Agent   Devin logo Devin   Goose logo Goose   Auggie logo Auggie   Autohand Code logo Autohand Code   Charm logo Charm   Cline logo Cline   Codebuff logo Codebuff   Command Code logo Command Code   Continue logo Continue   Droid logo Droid   Kilocode logo Kilocode   Kimi logo Kimi   Kiro logo Kiro   Mistral Vibe logo Mistral Vibe   Qwen Code logo Qwen Code   Rovo Dev logo Rovo Dev   + any CLI agent


Install

Desktop — macOS, Windows, Linux

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.


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.

    WeChat group 8 QR code for the Orca community  WeChat group 9 QR code for the Orca community

  • 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.

Orca contributors

GitHub star history chart for stablyai/orca

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.

S
Description
Orca is the ADE for working with a fleet of parallel agents. Run any coding agent with your own subscription. Available on desktop, mobile and remote runtime.
Readme MIT
1.5 GiB
Languages
TypeScript 95.1%
JavaScript 4.1%
Swift 0.2%
HCL 0.2%
CSS 0.1%