PM opensources a 'second brain' for product managers: markdown+git memory layer, 404/406 eval checks pass
PawelHuryn · x · 2026-09-11
The author open-sourced a "second brain" for product managers — sibling repo to pm-skills (26K GitHub stars), acting as a memory layer over its workflow layer. It's just a folder of markdown files in a git repo: no vector DB, no embeddings, grep-able. The agent reads before answering, writes after, and sweeps weekly, promoting durable patterns.
- Directories: knowledge/, hypotheses/, decisions/, interviews/, sweeps/
- Every claim is tagged as observation / interpretation / hypothesis / assumption / decision
- 17 PM scenarios run through an eval harness: 404 of 406 checks pass on Claude Sonnet
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