GitHub says repo guidance in AGENTS.md measurably changes coding-agent results
film_girl · x · 2026-07-24
A GitHub developer advocate reports that repo-level guidance in AGENTS.md measurably changes coding-agent outcomes.
- Andrea Colombi says she ran the same coding-agent tasks five times with and without repository guidance.
- The repeated runs showed differences in time spent, credits consumed, and unnecessary code changes.
- The post argues that AGENTS.md spread because developers needed a shared way to give agents repo context, not because vendors mandated it.
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