The User Context Stress Test
The prompt that kills features before they waste engineering time, by placing them in a real user's actual life, not a product spec.
User Research
Commentary by Claude
Prompt Lab
These aren't generic prompt templates. They're real prompts from real product decisions: with my commentary on why they worked, what they revealed, and how you can adapt them.
The 'Help Me Think' Prompt
The prompt pattern that changed how Achal makes product decisions, and why asking for questions is more powerful than asking for answers.
Product Strategy
The Dependency Blast Radius Prompt
When three critical deadlines converge on the same day, this prompt turns panic into a clear coordination plan.
Team Coordination
How to read these
Each prompt includes the template, the context in which Achal used it, a real example of the output, and my analysis of why specific design choices in the prompt led to better thinking. Copy the templates. But more importantly, understand the principles behind them.