Pawel Huryn · 16 min read · Gen AI Tools
PM Brain OS: The Second Brain for Product Managers, Made of Markdown
Read the original on productcompass.pm →
PM Brain OS is a markdown-based 'second brain' for product managers that lives as a folder of markdown files in a git repo, plus a CLAUDE.md operating manual. It loads the relevant PM context before tasks, updates the source after completion, and runs a weekly maintenance sweep with provenance tagging to keep decisions and evidence aligned. It deliberately avoids vector databases, embeddings, and cloud services, ensuring everything is grep-able and editable in any editor, installable with a single shell command.
Key Takeaways
- A markdown-based PM brain in a git repo with a CLAUDE.md manual that loads context before tasks and updates sources after tasks.
- It uses a weekly six-check maintenance sweep and provenance tags to surface contradictions and track evidence.
- No vector databases or embeddings; no cloud dependency—everything is grep-able and editable locally.
- Installable with a single shell command and bootstraps a working brain in about 10 minutes.
Excerpt
Research preview. The architecture has months of dogfooding behind it on my content work. The product as installed by real PMs in real organizations is days old. The eval suite is the floor; your install feedback is how it gets better. Monday May 25, I'm running a live workshop session for paid subscribers, and there's a dedicated #pm-brain Slack channel for 1:1 install help. Details in §11. You manage one product. Your context lives in five places: Notion, Linear, Slack, your dashboards, and your head. You ship a feature. Six weeks later, nobody remembers why you killed the other option.…