Jinwoo Hong
e628090ad4
* perf(mobile): cut the relay reconnect critical path and admit dead sockets faster
Phone medians put E2EE authentication at ~424ms but `connected` at ~630ms,
because the session serialized two RPC round trips behind it: the resume
confirm (`pairing.getEndpoints`) and the capability advisory. Both now ride
the authenticated socket concurrently and off the critical path, so the
session publishes `connected` as soon as E2EE authenticates. Peer identity
is already proven by then — the confirm carries credential/lease bookkeeping
and the cell assignment check, and it still fails the session on a bad answer
or a foreign relayHostId, only later. `persistResumeConfirmation` awaits the
new `whenResumeConfirmed()` instead of assuming the answer is present at
`connected`.
Foreground liveness on a retained relay: `notifyForeground('app-resume')`
now probes past the 10s voluntary minimum on urgent bounds (2s, one miss),
so a socket that died while the process was suspended is admitted in ~2s
instead of ~8s. Focus and network nudges keep the old minimum and bounds.
Relay sessions also gain a 25s idle sweep, gated on foreground so a
backgrounded app spends no probes.
Recovery is no longer blocked by the direct return probe. The probe's 12s
dial is a pure observation on its own socket, so it takes the supervisor's
operation mutex only for the cutover; a relay recovery landing during a
foreground return now starts immediately instead of waiting the budget out.
Requests that do land during the cutover are queued in a new
RelayRecoveryIntentQueue and replayed on release — an owning forced
replacement keeps its intent, everything else replays as a plain recovery.
Tests updated deliberately, for the new ordering:
- 'sends no periodic traffic while an authenticated relay is idle' asserted
the absence of any relay idle probe, which is exactly the gap D3 closes.
Replaced by a sweep test plus a backgrounded no-probe test.
- 'rate-limits foreground sequences without suppressing a retry' asserted
that app-resume was suppressed inside the 10s minimum. An app resume is
now the one nudge that must never be rate-limited.
- the session helpers waited for the confirm answer before `connected`;
they now authenticate, read both concurrent frames, and settle them.
* fix(mobile): book backoff when a relay resume confirm fails after the cutover
Review round 1 on 352bfd2300.
P1: publishing `connected` at E2EE authentication made `migrateTo` resolve
before the resume confirm answered, so a confirm that failed afterwards —
a `relayHostId` mismatch from a rehomed desktop is the live case — was still
reported as an `established` dial. registerFailure was skipped, no cooldown
was booked, recordMigration()/setActiveSession() ran for a dying session, and
the queued-recovery replay redialled immediately: a tight loop with a
connected→disconnected blip per pass. The establisher now awaits
whenResumeConfirmed() after the cutover and, if the session is no longer
connected, reports a failed dial (or an aborted one when direct won or the
supervisor went inactive) exactly as a rejected migrateTo used to. The UI
still connects early; only the supervisor's bookkeeping waits.
The state check, rather than getFailure(), is the oracle: a live session can
carry a latched failure without having failed yet, and "is this session still
alive once the confirm settled" is precisely the question migrateTo used to
answer.
P2: the resume probe profile goes to two 2s misses instead of one. The first
frame after a resume rides a cold radio and a possibly distant cell, so one
slow answer is not proof of a dead link; the verdict still lands at 4s rather
than the previous 8s.
Nits: the direct probe's two early returns no longer close the candidate the
finally also closes (the second shape pre-existed); RelayRecoveryIntentQueue
is cleared in the supervisor's stop().
Mutex-hold note: persistResumeConfirmation, and now the establisher's own
await, are bounded by the confirm's request timeout. That would have been the
session's 30s default, so the confirm is pinned to RELAY_CONFIRM_TIMEOUT_MS
(12s) — the same bound migrateTo's waitForAuthenticated applied before.
Test: a supervisor-level case where every dial authenticates then fails the
confirm must book 250/500/1000ms backoff with no immediate redial, and must
never record a migration. It fails on the pre-fix establisher.
* fix(mobile): close three relay probe and liveness gaps from review
Review findings on this PR, fixed here so they ride along with the rest.
Direct return probe: schedule() guarded only the pending timer, so a caller
asking for an immediate probe while a dial was in flight started a second one
that overwrote activeProbe. stop() then reached only the newest socket and left
the earlier dial running out its 12s budget. Releasing the operation mutex for
the dial removed the only thing that had been serializing probes, and the
background bounce hits it directly: background() cancels the timer but leaves an
in-flight dial alone, and the matching foreground return asks for a probe at
once. The in-flight probe now owns the next slot and re-arms on the soonest
delay any caller asked for, so an urgent request is deferred rather than dropped
on the 15s floor.
Liveness watchdog: both retry paths in handleProbeTimeout, the tolerated-miss
one and the unfair-window one, retried without rechecking shouldIdleProbe. An
idle-sweep probe that started in the foreground could therefore keep spending
probes after the app backgrounded and terminate a healthy relay on misses that
were really iOS suspending the socket, which is the exact reading the foreground
gate exists to prevent. Probes now carry their origin, and an idle-sweep probe
that times out while backgrounded clears its state and re-arms the sweep with no
misses carried forward. Caller probes still reach a verdict.
Relay RPC session: whenResumeConfirmed() handed a pre-authentication caller an
already-resolved promise, so the documented contract only held after
authentication. No caller can reach that window today, since publishAuthenticated
assigns the promise before publishing 'connected' and both readers run after
migrateTo resolves, but the type comment promised more than the code delivered.
The deferred now exists from construction and settles on the confirm, on fail(),
and on close(), which are the only ways the session can end. Both endings had to
settle it and already shared nearly all of their teardown, so they are unified
behind one terminate().
* fix(mobile): give a resume probe its own miss budget
A resume probe supersedes an ordinary probe already in flight, but startProbe
carried the ordinary profile's missedProbes across the switch. Relay uses 2
misses for both profiles, so one earlier 4s miss plus a single slow 2s answer
terminated the session -- consuming the tolerated cold-radio answer the urgent
profile exists to provide. Switching profile now resets the count.
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. |
 |
Parallel WorktreesFan one prompt across five agents, each in its own isolated git worktree — compare the results and merge the winner. |
 |
Terminal SplitsGhostty-class terminals with WebGL rendering, infinite splits, and scrollback that survives restarts. |
 |
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. |
 |
GitHub & Linear, NativeBrowse PRs, issues, and project boards in-app — open a worktree from any task and review without a context switch. |
 |
SSH WorktreesRun agents on a beefy remote box with full file editing, git, and terminals — auto-reconnect and port forwarding included. |
 |
Annotate AI DiffsDrop comments on any diff line and ship them back to the agent — review, edit, and commit without leaving Orca. |
 |
Drag Files to AgentsVS Code's editor with autosave everywhere — drag files or images straight into an agent prompt. |
 |
Orca CLIAgents drive Orca too — script every workflow with |
 |
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 0.0.48 · Install guide
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.
-
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.
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.