Writing

My coach kept telling me I went out too hard. I only listened once an AI read my Garmin races and put numbers on my two lactate thresholds.

Garmin has no public API for the data your own watch records. garmin-pull is a small standard-library Python tool, also packaged as a Claude Code plugin, that pulls sleep, HRV, stress, body battery and every workout into CSV and SQLite. Written by an AI agent under my direction, ten days old, and this post says exactly that.

Anything over a few minutes dies with the turn. The fix is a pattern, not a trick: the agent writes the script, the script runs detached, the chat only reads a status file.

The three rules, where things live, and the folder trick — the origin story of the tools in this section.