AGENTS.md best practices for coding agents (ANSWERED)
TL;DR — Quick Answer
AGENTS.md should be a concise agent onboarding doc: purpose, setup commands, test commands, conventions, and sharp edges. Keep it short — bloated files raise tokens and can reduce task success.
The Interview Question
What belongs in AGENTS.md? Give best practices for writing an effective file and explain why overly long AGENTS.md can hurt performance and cost.
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AGENTS.mdContext EngineeringBest PracticesAnthropicOpenAIMicrosoft