This cleans up a bunch of metric plumbing that had started to drift. The main change is making `codex-otel` the canonical home for shared metric definitions and metric tag helpers. I moved the `turn/thread` metric names that were still duplicated into the OTEL metric registry, added a shared `metrics::tags` module for common tag keys and session tag construction, and updated `SessionTelemetry` to build its metadata tags through that shared path. On the codex-core side, TTFT/TTFM now use the shared metric-name constants instead of local string definitions. I also switched the obvious remaining turn/thread metric callsites over to the shared constants, and added a small helper so TTFT/TTFM can attach an optional sanitized client.name tag from TurnContext. This should make follow-on telemetry work less ad hoc: - one canonical place for metric names - one canonical place for common metric tag keys/builders - less duplication between `codex-core` and `codex-otel`
codex-core
This crate implements the business logic for Codex. It is designed to be used by the various Codex UIs written in Rust.
Dependencies
Note that codex-core makes some assumptions about certain helper utilities being available in the environment. Currently, this support matrix is:
macOS
Expects /usr/bin/sandbox-exec to be present.
When using the workspace-write sandbox policy, the Seatbelt profile allows
writes under the configured writable roots while keeping .git (directory or
pointer file), the resolved gitdir: target, and .codex read-only.
Network access and filesystem read/write roots are controlled by
SandboxPolicy. Seatbelt consumes the resolved policy and enforces it.
Seatbelt also supports macOS permission-profile extensions layered on top of
SandboxPolicy:
- no extension profile provided:
keeps legacy default preferences read access (
user-preference-read). - extension profile provided with no
macos_preferencesgrant: does not add preferences access clauses. macos_preferences = "readonly": enables cfprefs read clauses anduser-preference-read.macos_preferences = "readwrite": includes readonly clauses plususer-preference-writeand cfprefs shm write clauses.macos_automation = true: enables broad Apple Events send permissions.macos_automation = ["com.apple.Notes", ...]: enables Apple Events send only to listed bundle IDs.macos_accessibility = true: enablescom.apple.axservermach lookup.macos_calendar = true: enablescom.apple.CalendarAgentmach lookup.
Linux
Expects the binary containing codex-core to run the equivalent of codex sandbox linux (legacy alias: codex debug landlock) when arg0 is codex-linux-sandbox. See the codex-arg0 crate for details.
All Platforms
Expects the binary containing codex-core to simulate the virtual apply_patch CLI when arg1 is --codex-run-as-apply-patch. See the codex-arg0 crate for details.