[codex-analytics] subagent analytics ( #15915 ) - creates custom event that emits subagent thread analytics from core
- wires client metadata (`product_client_id, client_name,
client_version`), through from app-server
- creates `created_at `timestamp in core
- subagent analytics are behind `FeatureFlag::GeneralAnalytics`
PR stack
- [[telemetry] thread events
#15690 ](https://github.com/openai/codex/pull/15690 )
- --> [[telemetry] subagent events
#15915 ](https://github.com/openai/codex/pull/15915 )
- [[telemetry] turn events
#15591 ](https://github.com/openai/codex/pull/15591 )
- [[telemetry] steer events
#15697 ](https://github.com/openai/codex/pull/15697 )
- [[telemetry] queued prompt data
#15804 ](https://github.com/openai/codex/pull/15804 )
Notes:
- core does not spawn a subagent thread for compact, but represented in
mapping for consistency
`INFO | 2026-04-01 13:08:12 | codex_backend.routers.analytics_events |
analytics_events.track_analytics_events:399 | Tracked
codex_thread_initialized event params={'thread_id':
'019d4aa9-233b-70f2-a958-c3dbae1e30fa', 'product_surface': 'codex',
'app_server_client': {'product_client_id': 'CODEX_CLI', 'client_name':
'codex-tui', 'client_version': '0.0.0', 'rpc_transport': 'in_process',
'experimental_api_enabled': None}, 'runtime': {'codex_rs_version':
'0.0.0', 'runtime_os': 'macos', 'runtime_os_version': '26.4.0',
'runtime_arch': 'aarch64'}, 'model': 'gpt-5.3-codex', 'ephemeral':
False, 'initialization_mode': 'new', 'created_at': 1775074091,
'thread_source': 'subagent', 'subagent_source': 'thread_spawn',
'parent_thread_id': '019d4aa8-51ec-77e3-bafb-2c1b8e29e385'} | `
`INFO | 2026-04-01 13:08:41 | codex_backend.routers.analytics_events |
analytics_events.track_analytics_events:399 | Tracked
codex_thread_initialized event params={'thread_id':
'019d4aa9-94e3-75f1-8864-ff8ad0e55e1e', 'product_surface': 'codex',
'app_server_client': {'product_client_id': 'CODEX_CLI', 'client_name':
'codex-tui', 'client_version': '0.0.0', 'rpc_transport': 'in_process',
'experimental_api_enabled': None}, 'runtime': {'codex_rs_version':
'0.0.0', 'runtime_os': 'macos', 'runtime_os_version': '26.4.0',
'runtime_arch': 'aarch64'}, 'model': 'gpt-5.3-codex', 'ephemeral':
False, 'initialization_mode': 'new', 'created_at': 1775074120,
'thread_source': 'subagent', 'subagent_source': 'review',
'parent_thread_id': None} | `
---------
Co-authored-by: jif-oai <jif@openai.com >
Co-authored-by: Michael Bolin <mbolin@openai.com >
rhan-oai ·
Ahmed Ibrahim ·