ClaudeMap

System Prompts Leaks

A continuously updated archive of extracted system prompts, fastest to cover the newest Claude models (Fable 5.1, Opus 5, Claude Design).

Prompt Librariessystem-promptleaksreferencearchive
Visit projectasgeirtj/system_prompts_leaks

asgeirtj's archive collects extracted system prompts across vendors and models, and it is the fastest to carry new Anthropic models — Fable 5.1, Opus 5, and Claude Design entries are already in, backed by 700+ commits of history. Use it to study how instruction hierarchies and tool descriptions evolve across model generations. Caveat: third-party extractions, not official docs — treat exact wording as approximate.

What it does

  • Verbatim prompts organized per vendor and model — one file per model version, e.g. claude-opus-4.6 through claude-opus-5.5
  • Claude Code system prompts tracked per model release, alongside Claude.ai, Claude Design, and artifact-type skills
  • Dedicated CC0-1.0 (public domain) license, unusual for a leak collection
  • High-profile coverage: a Washington Post interactive built on its prompts and a Simon Willison citation

When to use it

Use it to diff how instruction hierarchies, guardrails, and tool descriptions evolve across model generations — one file per model version makes before/after comparisons straightforward.

Getting started

Plain markdown files organized in vendor directories — browse on GitHub or clone the repository.

Things to know

Third-party extraction of proprietary prompts, not official docs — wording should be treated as approximate, and individual files can vanish if the vendor objects.

Repository

asgeirtj/system_prompts_leaks

Charted

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