{
  "schema_version": "1.0",
  "id": "archive:https://github.com/asgeirtj/system_prompts_leaks",
  "slug": "system-prompts-leaks-0pth2c5",
  "url": "https://feed7.dev/p/system-prompts-leaks-0pth2c5",
  "title": "asgeirtj/system_prompts_leaks",
  "why_included": "A maintained archive of extracted system prompts from 100+ AI products — Claude Fable 5, Claude Code, ChatGPT 5.5, Gemini, Cursor — useful for studying how vendors actually instruct their agents.",
  "summary": "**The gist** The repo collects extracted system prompts from roughly **100+** models and products across **Anthropic, OpenAI, Google, xAI**, Microsoft, Meta, and Mistral — including Claude Fable 5, Claude Code, ChatGPT 5.5, and Cursor — organized by vendor with a recently-updated index. It sits at **49.5k stars** with **599 commits** and updates as recent as July 2026.",
  "practical_implication": "**Why it matters** Vendor system prompts are the closest thing to a reference library for **prompting** and harness design: how labs structure tool instructions, refusal rules, and formatting constraints. Reading how **Claude Code** or **Cursor** is instructed can directly inform the system prompt of your own agent.",
  "agent_context": "**The gist** The repo collects extracted system prompts from roughly **100+** models and products across **Anthropic, OpenAI, Google, xAI**, Microsoft, Meta, and Mistral — including Claude Fable 5, Claude Code, ChatGPT 5.5, and Cursor — organized by vendor with a recently-updated index. It sits at **49.5k stars** with **599 commits** and updates as recent as July 2026.\n\n**Why it matters** Vendor system prompts are the closest thing to a reference library for **prompting** and harness design: how labs structure tool instructions, refusal rules, and formatting constraints. Reading how **Claude Code** or **Cursor** is instructed can directly inform the system prompt of your own agent.\n\n**Watch out** Nothing here is verified: prompts are obtained via **extraction-style prompting**, the repo states **no validation methodology**, and vendors revise prompts constantly — treat any entry as a possibly **stale or partial** reconstruction.",
  "source": {
    "name": "GitHub",
    "url": "https://github.com/asgeirtj/system_prompts_leaks",
    "published_at": null
  },
  "source_class": "tool",
  "content_type": "GitHub Repo",
  "layer": "context",
  "domains": [
    "coding"
  ],
  "topics": [
    "prompting",
    "context-engineering",
    "coding-agents"
  ],
  "verification": {
    "status": "needs_review",
    "label": "Needs Review",
    "method": "unverified",
    "verified_at": null
  },
  "uncertainty": [
    "Nothing here is verified: prompts are obtained via **extraction-style prompting**, the repo states **no validation methodology**, and vendors revise prompts constantly — treat any entry as a possibly **stale or partial** reconstruction."
  ],
  "lifecycle": "Current",
  "published_at": null,
  "modified_at": null,
  "supersedes": [],
  "expires_at": null,
  "formats": {
    "html": "https://feed7.dev/p/system-prompts-leaks-0pth2c5",
    "json": "https://feed7.dev/p/system-prompts-leaks-0pth2c5.json",
    "markdown": "https://feed7.dev/p/system-prompts-leaks-0pth2c5.md"
  }
}