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ApprovabilityVerdict: Not approved Macroscope's review found this PR not approvable — This PR introduces a substantial Codex monitoring capability with authenticated MCP command execution, automatic background wake turns, and new synchronization and cleanup behavior in existing runtime paths. It also makes monitoring available by default to Codex sessions, creating broad runtime and authorization impact beyond a small isolated change. You can add or adjust custom eligibility rules. Learn more. |
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Addressed the static-analysis suppression called out in the final approval summary in 7a39b4cf6: the runtime test now uses the existing Effect FileSystem and Path services, with no diagnostic override. All 13 runtime tests, server typecheck, and targeted lint pass. The monitoring capability remains enabled for Codex as requested; the repository policy requiring human review for product-default changes still applies. |
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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)
Included review availability: Your plan provides up to 10 included reviews per hour; 3 remain after this review. 📝 WalkthroughWalkthroughThe change adds capability-gated MCP monitoring tools, a monitor session registry, Codex background task tracking, wake handling, provider event mapping, runtime wiring, tests, and documentation. ChangesCodex monitoring
Priority: ➖ Normal Estimated code review effort: 5 (Critical) | ~90 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant MCPClient
participant MonitorToolkitHandlersLive
participant MonitorSessions
participant CodexSessionRuntime
participant CodexBackgroundTasks
MCPClient->>MonitorToolkitHandlersLive: monitor_start(command)
MonitorToolkitHandlersLive->>MonitorSessions: start(providerSessionId, command)
MonitorSessions->>CodexSessionRuntime: start(command)
CodexSessionRuntime->>CodexBackgroundTasks: register and track process
CodexBackgroundTasks->>CodexSessionRuntime: queue monitor wake
CodexSessionRuntime->>MCPClient: deliver monitor event
Suggested reviewers: Merge Risk: 🟡 Moderate · up to A network observer can capture and reuse a monitor-capable credential when the server is bound to a non-loopback HTTP address. Restrict these bindings or require TLS before merging. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@apps/server/src/mcp/McpSessionRegistry.ts`:
- Line 132: Update the capability initialization in McpSessionRegistry so
monitor is not granted for non-loopback HTTP bearer sessions; only issue monitor
credentials when the transport is authenticated TLS or local IPC, while
preserving the existing preview default and eligible local-session behavior.
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apps/server/integration/OrchestrationEngineHarness.integration.tsapps/server/src/mcp/McpHttpServer.test.tsapps/server/src/mcp/McpHttpServer.tsapps/server/src/mcp/McpInvocationContext.tsapps/server/src/mcp/McpProviderSession.tsapps/server/src/mcp/McpSessionRegistry.test.tsapps/server/src/mcp/McpSessionRegistry.tsapps/server/src/mcp/MonitorSession.test.tsapps/server/src/mcp/MonitorSession.tsapps/server/src/mcp/toolkits/monitor/handlers.tsapps/server/src/mcp/toolkits/monitor/tools.tsapps/server/src/provider/Drivers/CodexDriver.test.tsapps/server/src/provider/Drivers/CodexDriver.tsapps/server/src/provider/Layers/CodexAdapter.test.tsapps/server/src/provider/Layers/CodexAdapter.tsapps/server/src/provider/Layers/CodexBackgroundTasks.test.tsapps/server/src/provider/Layers/CodexBackgroundTasks.tsapps/server/src/provider/Layers/CodexCollabRuntime.integration.test.tsapps/server/src/provider/Layers/CodexMonitoringRuntime.test.tsapps/server/src/provider/Layers/CodexSessionRuntime.tsapps/server/src/provider/Layers/ProviderInstanceRegistryLive.test.tsapps/server/src/provider/Layers/ProviderRegistry.test.tsapps/server/src/provider/Layers/ProviderService.test.tsapps/server/src/provider/Layers/ProviderService.tsapps/server/src/provider/testFixtures/codexMonitorAppServer.cjsapps/server/src/server.tsdocs/user/providers-codex.md
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Inline comments:
In `@apps/server/src/provider/Layers/CodexSessionRuntime.ts`:
- Around line 2356-2360: Update the command-execution output handling around
CodexSessionRuntime and CodexBackgroundTasks.output to maintain separate decoder
remainders for stdout and stderr instead of sharing one remainder. Emit complete
lines independently per stream, and when the process exits flush each non-empty
stream tail through backgroundTasks.output separately without imposing
cross-stream ordering.
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apps/server/integration/OrchestrationEngineHarness.integration.tsapps/server/src/mcp/McpHttpServer.test.tsapps/server/src/mcp/McpHttpServer.tsapps/server/src/mcp/McpInvocationContext.tsapps/server/src/mcp/McpProviderSession.tsapps/server/src/mcp/McpSessionRegistry.test.tsapps/server/src/provider/Drivers/CodexDriver.tsapps/server/src/provider/Layers/CodexAdapter.tsapps/server/src/provider/Layers/CodexSessionRuntime.tsapps/server/src/provider/Layers/ProviderService.test.tsapps/server/src/provider/Layers/ProviderService.tsapps/server/src/server.ts
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…toring events Adds the monitor MCP capability with monitor_start and monitor_unsubscribe tools. Codex sessions track background tasks, serialize user and monitor turns behind a single-permit lock, and wake from watcher output once the foreground turn is idle. Stop cancels pending wakes and managed commands. Fork adaptations: the McpCapability union keeps the fork's thread-metadata, thread-reference and worktree capabilities alongside monitor; CodexAdapter keeps the mt-desktop MCP resolver next to the new MonitorSessions service; the rewritten sendTurn carries the fork's plugin-skill discovery, computer history context, desktop tool flag and computer-home workspace flag. (cherry picked from PR pingdotgg#10183, commits d8d319d..2dacc2b squashed) Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Thanks for the PR. We're not taking changes to the orchestration and provider layers right now: that part of the server is being rewritten for V2, and merging into the current code would either conflict with or be thrown away by that work. Closing for now. If this is still an issue once V2 lands, please reopen (or open a fresh PR against the new code) and we'll take a proper look. |
Codex can now start a background watcher with
monitor_start, finish its turn, and wake when the command emits a complete output line or exits. The authenticated MCP tool schedules native Codex command execution and subscribes before launch, so immediate output is captured without chaining shell and subscription tools.monitor_unsubscribediscards pending wakes while leaving the command running.The adapter uses the existing task lifecycle and monitoring UI. Output is bounded, wakes wait for foreground work to finish, and Stop cancels pending wakes and terminates managed commands. Commands inherit the session sandbox policy. Monitoring requires Codex 0.153.2+ and is independent of browser permission.
Validation: 43 focused monitoring/MCP tests pass on the latest changes; broader adapter/runtime tests and server typecheck passed during implementation. Targeted lint passes. A live Codex 0.153.2 session scheduled a 30-second watcher through MCP, finished its turn, woke from output, and stopped successfully. Tool selection remains model-driven.
Implemented with GPT-6 and GPT-5.6 Sol through the Codex harness in T3 Code.
Note
Add background monitoring and wake-from-monitor support for Codex sessions
monitorcapability andMonitorSessionsservice withmonitor_startandmonitor_unsubscribetools, registered independently from the existingpreviewcapability in ProviderService.ts and McpHttpServer.tsCodexSessionRuntimegains background-task tracking, a single-permit turn lock that serializes user and monitor turns, monitor-wake delivery with rejected-wake retention, and interruption/cleanup that cancels active monitors and cleans background terminals in CodexSessionRuntime.tsCodexAdaptermaps native background monitor and task-status notifications into runtime timeline and task events; monitoring is gated to Codex versions >= 0.153.2 viasupportsCodexMonitoringCodexSessionRuntimenow requires aMonitorSessionsservice in its environment;McpCredentialRequestaccepts an optional capability array defaulting topreviewwhen absent. User turns now apply a 10-second start timeout and suppress monitor wakes while a send is pending. Monitor tool discovery returnsmonitor_start/monitor_unsubscribeonly for credentials with themonitorcapability.Macroscope summarized 27277b7.
Summary by CodeRabbit
New Features
Documentation