Startups.RIP is a comprehensive research platform and wiki that documents more than 1,700 Y Combinator startups which have shut down or been acquired. An AI research agent generates detailed post-mortems for each one, explaining what the company built, why it failed, and what has changed in the market since then.
For active builders, Startups.RIP offers rebuild playbooks and implementation-ready technical specifications. These can be used directly with AI coding agents like Claude Code or Cursor, letting you iterate on validated market ideas with a fresh perspective instead of starting from scratch.
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