Show HN: Mdarena – Benchmark your Claude.md against your own PRs

20 pointsposted 11 hours ago
by hudsongr

3 Comments

hudsongr

11 hours ago

Hey! I built this because everyone's writing CLAUDE.md files now but nobody knows if theirs actually works. The research is contradictory too, one paper says they hurt performance, another says they help. So I made a tool that just measures it on your own repo using your own PRs and your own test suite.

Turns out it's not often you can point to a single markdown file and say "this made the agent 27% better at resolving real tasks." That's what we saw on our production monorepo. I imagine this as a way for teams to actually make their agents write better code instead of guessing.

aszen

an hour ago

This is quite interesting, will try it. I kind of expect this to be done continuously as the code base changes.

geiser

2 hours ago

Could be a neat addition to LynxPrompt. Quite interesting, thanks!