PromptItIn logoPromptItIn
Log in
Developer

CLAUDE.md and AGENTS.md generator

Coding agents work better when they know how your project runs. Pick your stack and toolchain, set a few rules, and download a ready CLAUDE.md or AGENTS.md.

Free tool · Updated

Which file
Your stack
Package manager or toolchain
Fills in the commands below. Edit them to match your project.
House rules
CLAUDE.md

Add a project name or pick your stack, and the file shows here.

How to use it

  1. Pick CLAUDE.md for Claude Code, or AGENTS.md for Codex, Cursor and other agents.
  2. Write the project name and what it does, and tap your stack.
  3. Pick your package manager to fill in the commands, then edit them to match.
  4. Choose your house rules, download the file and save it in the root of your repo.

Tips

  • The commands matter most. An agent that knows how to build and test can check its own work.
  • Keep it short. Every line is read in every session, so cut anything the agent would do anyway.
  • Add a rule each time the agent repeats a mistake.
  • Using both? Keep AGENTS.md as the main file and point CLAUDE.md to it.

Frequently asked questions

What is CLAUDE.md?

A Markdown file Claude Code reads at the start of every session. It holds your project's commands, conventions and rules, so you don't repeat them in every chat.

What is AGENTS.md?

An open format for the same idea, read by many coding agents, including OpenAI Codex and Cursor. It lives in the root of your repo.

Which one should I use?

CLAUDE.md if you use Claude Code. AGENTS.md if you use Codex, Cursor or several agents. The content is the same, so you can make both here.

Is my project info sent anywhere?

No. The file is put together in your browser.

Cursor Rules GeneratorPick your stack and house rules and get a Cursor project rule as an .mdc file, with description, globs and alwaysApply set. Download it into .cursor/rules. Free.System Prompt GeneratorDescribe what your assistant should do, pick where it runs and its tone, and our AI writes a full system prompt with its role, rules, limits and reply format. Free.llms.txt GeneratorCreate an llms.txt file in the standard format: your site's name, a summary and your key pages with notes. Paste links in any form. Free, runs in your browser.

All free tools

Want a full prompt, not just keywords?

PromptItIn turns a rough idea into a clear prompt for ChatGPT, Claude, Gemini or any image model. Free to start.

Open the prompt generatorAdd to Chrome, free