Hey HN, I built QuickGitHub.

The idea is simple: take any GitHub URL, add “quick” before github.com, and get AI-generated system design documentation in under 60 seconds.

github.com/vercel/next.js → quickgithub.com/vercel/next.js

The generated docs include a system overview, architecture breakdown, key modules, tech stack, entry points, and dependencies.

There’s also a Q&A chat to ask follow-up questions about the repo.

Why I built this:

I think we’re heading toward a world where most code is written by AI agents, and the bottleneck shifts from writing code to understanding what was written. Traditional docs assume a human author. I wanted something that could explain any codebase instantly, regardless of who (or what) wrote it.

Some details: * Each repo is indexed once and cached permanently * Login required via GitHub OAuth (one free repo per account) * All generated docs are public by default * It’s open source: github.com/stym06/quickgithub

Would love feedback on the quality of the generated docs.

Try it on a repo you know well and tell me where it gets things wrong. that’s the most useful feedback I can get.