Explore the Y Combinator portfolio: AI idea validator, success predictor, live hiring board, and email digests. Live at exploreyc.com.
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Updated
Sep 16, 2026 - TypeScript
Explore the Y Combinator portfolio: AI idea validator, success predictor, live hiring board, and email digests. Live at exploreyc.com.
Your AI Co-Founder for Market Research, Competitor Analysis & Startup Validation
Killswitch is an AI startup idea validator that evaluates your idea across four critical dimensions: founder-market fit, willingness to pay, momentum, and execution risk. These scores combine into a clear verdict — pursue, pivot, or kill — so you can focus on what actually matters.
Open-source startup idea validator for Claude Code. Tells you if your idea is DEAD, ALIVE or INSUFFICIENT_DATA: research agents with verified quotes, a kill-cause scout for dead competitors and free substitutes, an independent judge, and the cheapest test to run before you build. Runs in your own Claude Code, no extra API keys.
To associate your repository with the idea-validator topic, visit your repo's landing page and select "manage topics."