What it does
Every AI chatbot receives a "system prompt": a long set of instructions from its maker that shapes how it behaves, what tools it can use and how it should answer. Users normally don't see it.
This collection gathers the text of system prompts reported for many well-known AI products, including ChatGPT, Claude, Gemini, Grok, Cursor and others, organised by company and product. It's regularly updated as new versions appear, and contributors can submit their own findings.
The README notes that news organisations and researchers have used the collection to explain how AI assistants are set up.
Who it's for
Curious readers, journalists, researchers and people writing their own AI prompts who want to see how major AI tools are instructed.
Can I use it without coding?
Yes. It's a collection of text files you can read in your web browser. New to this? Start here.
Can I run it?
- Cost
- FreeNothing to pay or sign up for.
- API key
- Not needed
Try it
- Browse the folders, which are grouped by company such as Anthropic, OpenAI and xAI.
- Open a file to read the hidden instructions behind that chatbot.
Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?
Before you install
- Only download from the official GitHub page. Copies with similar names exist for many popular projects.
- License (CC0-1.0): Read the license on the GitHub page before using it for business.
- More on staying safe
Where people are talking about it
- Claude's system prompt is over 24k tokens with toolsHacker News · May 2025