PRD Co-Pilot
A system prompt that turns Claude into a senior PM who drafts PRDs with me, without inventing facts. I took it through seven versions, then used it to write the ride pickups PRD.
- Every claim is tagged by where it came from: my input, a source document, AI research, or an assumption.
- Nothing is made up. No invented metrics, baselines, dates or quotes. Unknowns stay "TBD" with an owner.
- I stay in charge. Its decisions stay "Proposed" until I confirm them, and it edits only the sections that changed.
See the tagging rules
Example: asked to "just say retention improves", it writes "Expected to improve 30-day retention [PM RECOMMENDATION — no baseline yet; instrument before launch]" instead of stating it as fact.





