10 GitHub repos revealing how Cursor, Claude, Devin and other AI tools are prompted
victor_explore · x · 2026-10-14
A curated list of 10 GitHub repos (stars as of Oct 2026) showing how top AI tools are prompted:
- prompts.chat (172K stars, MIT/CC0): biggest community prompt library, self-hostable, formerly Awesome ChatGPT Prompts.
- System Prompts of AI Tools (144K stars, GPL 3.0): leaked prompts and tool lists from 30 coding tools (Cursor, Devin, v0, Lovable); some outdated.
- Prompt Engineering Guide (79K stars, MIT): the standard free guide to prompting, context engineering, RAG and agents.
- OpenAI Cookbook (76K stars, MIT): official OpenAI examples incl. prompts for latest models and Codex.
- System Prompts Leaks (69K stars, CC0): hidden instructions behind ChatGPT, Claude, Gemini, Grok, Claude Code; regularly updated.
- Claude Cookbooks (53K stars, MIT): official copy-paste Claude recipes.
- Fabric (44K stars, MIT): reusable prompt patterns for the terminal.
- Anthropic's Interactive Prompt Engineering Tutorial (38K stars): 9-chapter official course.
- Leaked System Prompts (15K stars): oldest active prompt-leak archive.
- Claude Code System Prompts (13K stars, MIT): every Claude Code prompt, per release.
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