Startup Skill

Startup Skill is a free, open source toolkit that runs inside Claude Code and tests a startup idea before the founder builds it. The user describes an idea in a sentence, and about 45 minutes later receives a research backed GO or NO GO verdict with more than 30 structured files covering market analysis, competitor battle cards, a financial model and a 30 day action plan. The process runs in eight phases that begin with an intake of founder and market fit and constraints, then generate five to eight variations of the idea so the founder does not fixate on one approach. Market research uses 11 parallel agents in four sequential waves working from web data. The strategy phase produces a Lean Canvas, competitive battle cards, Dunford positioning and a Value Proposition Canvas, and a brand phase follows. Every claim is tagged as Data, Estimate or Assumption so the reader knows what to trust. The vendor describes the scoring as tuned to reject weak ideas and says it actively looks for the strongest reasons an idea will fail. A sample output scores a restaurant menu planner idea 2.8 out of 10 with a NO GO verdict. It is aimed at first time and solo founders who want a structured, skeptical read before committing months to a build. The vendor compares it with strategy consultants and unstructured desk research. The toolkit is MIT licensed with code on GitHub, and the site presents it as free to use.