A file with project rules for AI coding helpers.
AGENTS.md is the “read this first” sign on a workshop door. It stops an AI from using the paintbrush as a hammer.
It tells coding helpers how this project works. Teams use it in big code projects.
Agentic coding
AGENTS.md gives coding agents clear rules inside the project.
System prompt
AGENTS.md adds project-specific instructions and saves them with the code.
Claude Code
Claude Code can read AGENTS.md before working in the project.