Extracted system prompts from Anthropic - Claude Fable 5.1, Opus 5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Google - Gemini 3.8 Flash, 3.1 Pro, Antigravity. xAI - Grok, Grok Bot, Cursor, Kimi and more! Updated regularly.
System Prompts Leaks is a collection of captured system instructions used to guide AI chatbots and coding agents before they receive user messages. It serves researchers and developers studying how different AI assistants are directed.
Skill Claude CodeCodex
Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration. TRIGGER — read BEFORE opening the target file; don't skip because it "looks like a one-liner" — whenever: the prompt names Claude/Anthropic in any form (Claude…
Skill Claude CodeCodex
Initialize new CLAUDE.md file(s) and optional skills/hooks with codebase documentation.
Skill Claude Code
Write or debug a Claude Code plugin made of function hooks (a hooks module exporting register(on, options), hooks ($, e, next) on events like tool.call, prompt.submit, ui.render, session.start). Load it before writing or changing such a plugin; it says where the exact types come from, how to run a plugin under…
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: