Startups.RIP

An AI-researched wiki of failed Y Combinator startups, with post-mortems and rebuild playbooks.

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Introduction

Startups.RIP is a research wiki covering over 1,700 Y Combinator startups that shut down or were acquired. An AI research agent writes post-mortems that explain what each company built, why it did not work out, and what has changed in the market since. Pro members get implementation-ready technical specs and rebuild playbooks that can be pasted into AI coding tools.

Added on: Nov 2, 2026
Website: startups.rip

Product information

What is Startups.RIP?

A research wiki of shut-down and acquired Y Combinator startups, with AI-written post-mortems and rebuild specs.

How to use Startups.RIP?

Browse startups by YC batch or industry to read research reports. Pro users can open the technical specs and rebuild plans for an idea they want to pursue with AI coding tools.

Core features of Startups.RIP

Database of 1,700+ YC startup post-mortems
AI-generated rebuild playbooks
Implementation-ready technical specs for AI coding agents
On-demand research reports for Pro subscribers
Browsing by industry and YC batch

Use cases of Startups.RIP

1Researching market validation and past failures in a niche
2Finding technical blueprints for rebuilding older startup ideas
3Doing due diligence on a market segment

Frequently asked questions about Startups.RIP

What is Startups.RIP?+

Startups.RIP is a research platform and wiki covering over 1,700 Y Combinator startups that shut down or were acquired.

What is the Startups.RIP Builder Discount?+

If you launch a project from a teardown or rebuild plan and share it publicly, you can get a 50% refund at 1,000+ views or a full refund at 10,000+ views.

What tools are Startups.RIP technical specs compatible with?+

The specs are designed to be pasted directly into AI agents such as Claude Code, Cursor, or Lovable.

Which category is Startups.RIP in?+

Startups.RIP is listed under AI Research Assistant.