The filename isn't the bottleneck. Coverage is.
23 of the 40 most popular repos on GitHub have no agent file at all. agents.md vs claude.md does nothing for a repo that has neither.
The real win is an agent that reads the codebase and builds that context itself.
Everyone's fighting over agents.md vs claude.md.
I scored the 40 most popular repos on GitHub. 57% have no agent instructions file at all. Not agents.md, not claude.md, nothing.
React, Django, Rust, Vite, Supabase, none of them.
We're debating which filename wins. Most repos don't even have one.