Concept · Building with AI
AGENTS.md
Also called: agents.md, agents md, agents dot md, CLAUDE.md, claude md, agent instructions file, rules file
A plain text file in a project that many coding agents read automatically at the start of every session. It holds the project's standing instructions, such as how to run it, which conventions to follow and what to avoid. Some tools use their own file name for the same idea, for example CLAUDE.md for Claude Code.
For example: A founder adds a line to AGENTS.md saying 'ask before changing anything in billing', and every later session follows it.
Connects to 12
- System prompt Concept
- Coding agent Concept
- Repository Concept
- Context pointer Concept
- Agent skills Concept
- Progressive disclosure Concept
- Claude Code Tool
- Startup ecosystem Concept
- Filesystem Concept
- Memory system Concept
- Home repo Concept
- AX Concept