Instrument an existing agent

Retrofit Progress Observability onto an existing codebase with the smallest possible diff, then run it once so spans start flowing. For a project that does not exist yet, this is the wrong skill — it only edits what is already there.

This skill writes code — the instrumentation edits and nothing else. It never restructures the app, and it never reads the platform back: confirming the traces arrived is left to /health-check.

1 · Detect — before touching anything

Scan the repo and report what you found, then the diff you intend to make, before editing: