Jinwoo Hong a174a086d7 fix(runtime): answer terminal.subscribe at once for a pane the desktop already has mounted (#23512)
* fix(runtime): answer terminal.subscribe at once for a pane the desktop already has mounted

A mobile subscribe to a PTY with no headless model asked the renderer to
mount its tab and waited for a newer serializer settle. The renderer drops
mount requests for tabs it already has mounted, so a reattached daemon PTY
whose restored provider snapshot outranked the live renderer held the reply
for the full 3 s deadline. A live renderer screen now proves attachment and
is adopted directly; an unmounted pane still requests the mount and waits.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* fix(runtime): treat any renderer answer, even a blank screen, as an attached pane

A fresh shell that has printed nothing has a registered serializer and an
empty screen; requiring non-empty data sent it back through the dropped
mount request and the 3 s wait. A blank screen skips the wait but does not
replace the chosen snapshot, so a parked pane cannot erase provider history.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* fix(runtime): treat a mounted pane with unsettled output as attached

The stable renderer snapshot returned null both when no renderer answered
and when output advanced under every retry, so a desktop pane printing
continuously still took the dropped mount request and the 3 s wait. It now
returns a typed outcome (settled, moving, absent); moving skips the mount
and publishes the chosen snapshot, and late recovery still requires settled.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* fix(runtime): adopt only a renderer-ordered screen when probing a mounted pane

The attachment probe read the terminal before knowing it would adopt, which
can reach the provider snapshot on the unmounted path; the read now follows
the decision. A seq-less renderer screen would replay every buffered chunk
on top of itself, so the probe keeps the chosen snapshot for it. The probe,
adopt and mount wait move into their own module to stay under the line cap.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* fix(runtime): adopt a seq-less renderer screen when no output is pending

The seq gate only prevents a double replay of buffered output, so a settled
non-blank screen without a seq is safe when nothing is pending. That keeps
the better screen for a pane right after a deferred cold restore, before it
is renderer-ordered. The rule now applies after the mount wait as well.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* refactor(runtime): decide renderer attachment from the host's serializer flag

The mounted-pane probe re-derived attachment by serializing the renderer up to six
times, which cost ~7.5 s for a registered but unresponsive renderer on a busy PTY.
The host already holds that fact in the serializer readiness flag. The flag is never
cleared when a pane closes over a live PTY, so one null serializer answer falls back
to the mount wait: worst case is the old 3 s plus one 750 ms serialize.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* refactor(runtime): let the serializer's answer alone prove renderer attachment

serializeRendererTerminalBuffer already answers null when the host's serializer flag is
unset, so the separate flag accessor was redundant. The numeric-seq adopt test now
replays only the byte past the seam.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb
2026-09-28 04:28:46 -04:00
2026-09-26 20:50:46 +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

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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 0.0.50 · 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.

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Parallel worktree orchestration

Terminal Splits

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

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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.

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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.

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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.

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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.

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Annotate AI-generated diffs

Drag Files to Agents

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

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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.

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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   Muse logo Muse   DeepSeek Harness logo DeepSeek Harness   ZCode logo ZCode   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

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  • 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.

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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

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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.
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