name: observability-and-instrumentation description: Use when shipping production behavior, adding logs, metrics, traces, alerts, retries, queues, or external calls; when an incident is hard to explain from available telemetry; or when a feature needs operational evidence. metadata: version: "1.0.0"
Observability and Instrumentation
The discipline is the same everywhere — start with the on-call questions, choose the right signal, follow the instrumentation rules, verify before claiming it's done — but how it's applied is calibrated per model. Pick the file for the model actually running:
| Model | File | |
|---|
| Claude Opus 5.5 | opus-5-5.md | |
| Claude Fable 5.1 | fable-5-1.md | |
| Claude Sonnet 5 | sonnet-5.md | |
| Claude Sonnet 5.5 | sonnet-5-5.md | |
| Claude Haiku 5.5 | haiku-5-5.md | |
| OpenAI GPT-6 Astra | gpt-6-astra.md | |
| OpenAI GPT-6 Sol | gpt-6-sol.md | |
| OpenAI GPT-6.1 Sol | gpt-6-1-sol.md | |
| OpenAI GPT-6 Luna | gpt-6-luna.md | |
Read the file matching the model actually running before applying this skill.
Running a model not listed above (an older generation, a different model family entirely)? sonnet-5.md carries the fullest general-purpose version of the underlying procedure — read that one rather than skipping this skill.