Directory · Claude Code extensions
System Prompts Leaks
Curated collection of verbatim system prompts from Claude Code, Codex, Cursor, ChatGPT, Gemini, Grok and other AI products.
★ 69,574 stars · last updated 2026-10-13 · Free, open source · View on GitHub
Best for
- Studying how Claude Code and its subagents, skills and slash commands are instructed
- Comparing system prompts across coding agents like Codex, Cursor and Antigravity
- Prompt engineering research and writing your own agent instructions
Our take
A reference repository of markdown files, not a tool or extension, so there is nothing to install. It is very actively maintained with frequent additions and has been cited by outlets like The Washington Post and Simon Willison. The prompts are leaked or extracted rather than officially published, so accuracy depends on community verification and the README invites PRs when results differ.
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