Sanity Check — Bootstrapper Decision Filter

A fast, opinionated filter that applies core bootstrapper principles to any founder decision. This is NOT a deep analysis skill — it's a gut check with structure. One page max.

Read .claude/skills/_shared/philosophy.md first — the 6 lenses below are distilled from those principles.

When to Use

• Quick decisions that don't need 10 dimension skills
• "Should I add this feature?"
• "Should I pivot to this adjacent market?"
• "Should I raise my prices?"
• "Should I hire for this role?"
• Reviewing the output of another skill — "Run /sanity-check on my /analyze-idea CONDITIONAL verdict"
• Any fork-in-the-road moment where the founder needs a principled nudge, not a research project

The 6 Lenses

Apply each lens to the decision. Skip any that are clearly irrelevant (e.g., lens 4 doesn't apply to a pricing decision). Never force all 6 — use judgment.