feat(desktop): add opt-in Cua Driver computer use - #10899
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September 9, 2026 18:50
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Path: .coderabbit.yaml Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (2)
🚧 Files skipped from review as they are similar to previous changes (2)
Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review. 📝 WalkthroughWalkthroughAdds end-to-end CUA driver support across contracts, desktop and server runtimes, Codex session setup, settings, documentation, and desktop packaging. The change includes lifecycle handling, telemetry transport, configuration detection, platform bundle staging, and extensive tests. ChangesCUA driver integration
Priority: ➖ Normal Estimated code review effort: 5 (Critical) | ~120 minutes Merge Risk: ⚪ Minimal · up to This change adds opt-in Cua computer use while preserving existing configuration precedence and disabled-by-default behavior. No concrete current-head merge-blocking risk remains. Sequence Diagram(s)sequenceDiagram
participant CodexSession
participant CodexAdapter
participant CuaDriver
participant DesktopTelemetryReceiver
participant DesktopCuaDriver
CodexSession->>CodexAdapter: start session
CodexAdapter->>CuaDriver: resolve managed CUA
CuaDriver->>DesktopTelemetryReceiver: request desktop driver
DesktopTelemetryReceiver->>DesktopCuaDriver: send cuaDriverRequest
DesktopCuaDriver-->>DesktopTelemetryReceiver: publish cuaDriverReport
DesktopTelemetryReceiver-->>CuaDriver: return driver status
CuaDriver-->>CodexAdapter: return MCP app-server arguments
CodexAdapter-->>CodexSession: start with CUA configuration
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Actionable comments posted: 1
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Inline comments:
In `@apps/server/src/cua/CuaDriver.ts`:
- Around line 206-207: Update the cleanup flow containing host.uniffiDestroy()
so occupied is reset even when the synchronous native call throws. Guard the
destruction call with guaranteed cleanup semantics, preserving the existing
release behavior while ensuring later createHost calls are not blocked by a
stale occupied flag.
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ℹ️ Review info
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Review profile: CHILL
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⛔ Files ignored due to path filters (1)
pnpm-lock.yamlis excluded by!**/pnpm-lock.yaml
📒 Files selected for processing (37)
apps/desktop/package.jsonapps/desktop/src/app/DesktopApp.tsapps/desktop/src/backend/DesktopBackendManager.test.tsapps/desktop/src/backend/DesktopBackendManager.tsapps/desktop/src/backend/DesktopBackendPool.test.tsapps/desktop/src/cua/DesktopCuaDriver.test.tsapps/desktop/src/cua/DesktopCuaDriver.tsapps/desktop/src/main.tsapps/desktop/src/telemetry/DesktopTelemetryPublisher.test.tsapps/desktop/src/telemetry/DesktopTelemetryPublisher.tsapps/desktop/src/updates/DesktopRemoteUpdates.test.tsapps/server/package.jsonapps/server/src/cua/CuaDriver.test.tsapps/server/src/cua/CuaDriver.tsapps/server/src/cua/codexCuaConfiguration.test.tsapps/server/src/cua/codexCuaConfiguration.tsapps/server/src/cua/resolveCodexCua.test.tsapps/server/src/cua/resolveCodexCua.tsapps/server/src/provider/Layers/CodexAdapter.test.tsapps/server/src/provider/Layers/CodexAdapter.tsapps/server/src/provider/Layers/CodexSessionRuntime.test.tsapps/server/src/provider/Layers/CodexSessionRuntime.tsapps/server/src/resourceTelemetry/DesktopTelemetryReceiver.tsapps/server/src/server.tsapps/web/src/components/settings/ProjectDefaultsSettings.tsxapps/web/src/components/settings/SettingsPanels.tsxapps/web/src/components/settings/settingsSearch.tsdocs/user/providers-codex.mdpackages/contracts/src/cua.tspackages/contracts/src/index.tspackages/contracts/src/resourceTelemetry.tspackages/contracts/src/settings.test.tspackages/contracts/src/settings.tsscripts/build-desktop-artifact.test.tsscripts/build-desktop-artifact.tsscripts/lib/cli-external-packages.test.tsscripts/lib/cli-external-packages.ts
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The actionable cleanup finding is fixed in 201eb13 with a regression test. I am leaving the automated docstring-coverage warning unchanged: AGENTS.md asks for comments that explain usage or non-obvious constraints and discourages documentation that restates code. Adding docstrings solely to meet the percentage would conflict with that guidance. |
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What Changed
Add opt-in Cua Driver computer use for Codex sessions on current main. The environment owns a default-off setting; eligible sessions receive a managed MCP configuration while existing user Cua configuration takes precedence.
The desktop app hosts the native driver and passes its MCP descriptor over the existing private control pipe to its primary backend. Standalone servers can supply a driver executable through
T3CODE_CUA_DRIVER_PATH. Disabling the setting stops managed access without restarting the backend. Startup and shutdown waits are bounded. Late native calls retain their host until cleanup can safely finish, with regression coverage for cancellation and failure.Cua Driver SDK and release assets are pinned to 0.24.0, with verified archive checksums and platform bundle staging. The native SDK remains external to the server bundle so its native libraries and loaders can resolve correctly.
Why
Reimplements the focused computer-use integration from #5533 against current main, without the older orchestration branch history. Managed Cua is separate from agent browser access and is injected only into interactive Codex sessions. Other providers and a computer-view preview are outside this change. Mobile can direct sessions on an already configured host; setup is on web/desktop.
Validation
Integrated verification
Screenshots
Settings before and after
Before: the parent revision has no Cua computer-use setting.
After: the opt-in Cua setting is separate from agent browser access.
Linux native input before and after
The native GTK fixture before input through the managed MCP descriptor:
The same fixture after input, confirmed by accessibility and independent fixture readback:
Remaining verification
No provider credentials were copied to the VM, so an authenticated model turn invoking native tools is not claimed. Linux verification used built desktop bundles, not a packaged AppImage. Packaged macOS permission attribution and Windows execution remain unverified. Cua Driver 0.24.0's Electron text input failed in this Xvnc guest; GTK accessibility input passed. Keep this PR draft while the remaining integration review and platform verification are pending.
Implemented with Codex; plan debated with Claude Code using
claude-fable-5-1at medium effort.Summary by CodeRabbit
New Features
Documentation