AGENTS.md vs CLAUDE.md vs GEMINI.md: The Ultimate AI Agent Configuration Files Comparison

A Comprehensive Guide to AI Agent Configuration Files: AGENTS.md, CLAUDE.md, and GEMINI.md Introduction: The New Era of AI-Assisted Programming If you’ve been working with AI programming assistants recently, you may have noticed special .md files appearing in your project repositories. These aren’t ordinary documentation files—they’re specialized configuration files that tell AI tools how to behave within your codebase. The rapid adoption of AI coding assistants has created a new challenge: each major platform developed its own configuration format, leading to fragmentation and increased maintenance overhead. This guide will help you understand the three major configuration formats that have emerged and …