system_prompts_leaks

Name: system_prompts_leaks
Author: asgeirtj

Verified

Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, 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.

68,505stars

11,134forks

JavaScript

Installation

# Add to your Claude Code skills
git clone https://github.com/asgeirtj/system_prompts_leaks

Getting Started

Guides for using ai agents skills like system_prompts_leaks.

Caveman: Cut Claude Token Use by 65%
How agent-side prompt compression works, when to use it, and when not to.
What is an AI Skills Marketplace?
Definitions, how marketplaces work, and how to choose between them in 2026.
Getting Started with AI Skills

Security ReportVerified

Last scanned: 4/15/2026

{
  "issues": [],
  "status": "PASSED",
  "scannedAt": "2026-04-15T06:03:11.321Z",
  "semgrepRan": false,
  "npmAuditRan": true,
  "pipAuditRan": true
}

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README.md

Frequently Asked Questions

What is system_prompts_leaks?

system_prompts_leaks is an open-source ai agents skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by asgeirtj. Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, 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. It has 68,505 GitHub stars.

Is system_prompts_leaks safe to use?

Yes. system_prompts_leaks passed SkillsLLM's automated security scan — a dependency vulnerability audit plus prompt-injection heuristics — with no high-severity issues. You can read the full report in the Security Report section on this page.

How do I install system_prompts_leaks?

Clone the repository with "git clone https://github.com/asgeirtj/system_prompts_leaks" and add it to your Claude Code skills directory (see the Installation section above).

What programming language is system_prompts_leaks written in?

system_prompts_leaks is primarily written in JavaScript. It is open-source under asgeirtj on GitHub, so you can review or fork the full source.

Are there alternatives to system_prompts_leaks?

Yes. SkillsLLM lists many other AI Agents skills you can browse and compare side by side. Open the AI Agents category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh system_prompts_leaks against similar tools.

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⚠️ Third-Party Software Notice

This skill is third-party open-source software developed and hosted independently on GitHub. SkillsLLM is an informational directory and does not control or maintain the underlying repository.

Any security checks, ratings, or warnings displayed by SkillsLLM are automated and limited in scope. They do not constitute a security certification or guarantee that the software is safe, error-free, or free from malicious code, vulnerabilities, compromised dependencies, or prompt-injection risks.

Review the source code, permissions, dependencies, and configuration before installing or running any third-party skill. Use is at your own risk. To the maximum extent permitted by applicable law, SkillsLLM is not liable for losses arising from third-party software.

Read the Terms of Service

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Open Source Agent Analytics

Understand your agents in production

The Washington Post built its interactive story on prompts from this repo: See the hidden rules behind AI. Then use them to rewrite this article. (May 11, 2026)

CEPS' AI World built a live data dashboard from this repo's files: System prompts and what they tell us about the chat before the chat (July 10, 2026)

System Prompts Leaks

The full verbatim system prompts behind the most popular chatbots in the world. Carefully curated and complete. Feel free to open up a PR or get in contact if you got a different result.

Last Commit

Most recent additions/changes

What	Date	Link
GPT-6-Sol Codex	September 27, 2026	GPT-6-Sol Codex system prompt
GPT-6-Luna Codex	September 27, 2026	GPT-6-Luna Codex system prompt
Fable 5.1 Claude Code Desktop	September 27, 2026	Claude Code desktop app system prompt (Fable 5.1)
Claude Opus 5.5	September 22, 2026	Claude Opus 5.5 system prompt
Opus 5.5 Claude Code	September 22, 2026	Claude Code system prompt (Opus 5.5)
Grok 4.7	September 21, 2026	Grok 4.7 system prompt (Grok CLI)
Claude Projects	September 21, 2026	Claude Projects - Thread Claude system prompt
Claude Code Advisor tool	September 15, 2026	Advisor tool prompts (both sides)
ChatGPT Work Codex (local)	September 13, 2026	ChatGPT Work Codex local system prompt
Gemini 3.8 Flash	September 13, 2026	Gemini 3.8 Flash system prompt
Fable 5.1 Claude Code headless	September 5, 2026	Claude Code headless system prompt (Fable 5.1)
GPT-6-Astra Codex	September 4, 2026	Codex GPT-6-Astra system prompt
Claude Fable 5.1	September 1, 2026	Claude Fable 5.1 system prompt · Claude Code (Fable 5.1)
Grok 4.6	August 29, 2026	Grok 4.6 system prompt
Grok Bot	August 21, 2026	Grok Bot system prompt
Gemini 3.7 Flash	August 18, 2026	Gemini 3.7 Flash system prompt
Muse Code (Meta's coding CLI)	August 17, 2026	Muse Code system prompt
Claude Cowork (new capture + setup skills)	August 17, 2026	Claude Cowork system prompt · setup skills
Claude Science	August 14, 2026	Claude Science system prompt
GPT-5.6 Codex	July 26, 2026	Codex GPT-5.6 system prompt
Grok 4.5	July 26, 2026	Grok 4.5 system prompt
Claude Opus 5	July 24, 2026	Claude Opus 5 system prompt · Claude Code (Opus 5)
Claude Design (full prompt + 53 tools + 22 skills + 10 starter components)	July 23, 2026	Claude Design system prompt · skills · starter components
Perplexity	July 17, 2026	Perplexity AI system prompt
Claude Code (new models)	July 16, 2026	Claude Code system prompt (Fable 5) · Sonnet 5
OpenCode · Pi · CommandCode	July 16, 2026	OpenCode system prompt · Pi system prompt · CommandCode CLI system prompt

Anthropic — Claude system prompts

Claude.ai system prompts (web, desktop & mobile)

Model	Prompt
Claude Opus 5.5	Claude Opus 5.5 system prompt
Claude Fable 5.1	Claude Fable 5.1 system prompt
Claude Opus 5	Claude Opus 5 system prompt
Claude Fable 5	Claude Fable 5 system prompt
Claude Opus 4.8	Claude Opus 4.8 system prompt
Claude Sonnet 5	Claude Sonnet 5 system prompt
Claude Opus 4.7	Claude Opus 4.7 system prompt
Claude Opus 4.6	Claude Opus 4.6 system prompt · No tools
Claude Sonnet 4.6	Claude Sonnet 4.6 system prompt · No tools
Injected reminders	Claude.ai injected reminders

Claude Code system prompts

Component	Prompt
Opus 5.5 Claude Code	Claude Code system prompt (Opus 5.5)
Fable 5.1 Claude Code	Claude Code system prompt (Fable 5.1)
Fable 5.1 Claude Code Desktop	Claude Code desktop app system prompt (Fable 5.1) · Fable 5
Fable 5.1 Claude Code headless	Claude Code headless system prompt (Fable 5.1)
Opus 5 Claude Code	Claude Code system prompt (Opus 5)
Fable 5 Claude Code	Claude Code system prompt (Fable 5)
Opus 4.8 Claude Code	Claude Code system prompt (Opus 4.8)
Sonnet 5 Claude Code	Claude Code system prompt (Sonnet 5)
Claude Code (older models)	Opus 4.7 · Opus 4.6 · Sonnet 4.6 · Haiku 4.5
Subagents	Claude Code subagent system prompts
Advisor tool	Advisor tool prompts (both sides)
Skills & commands	Claude Code skills · Slash commands
Docs assistant	docs.claude.com assistant instructions

Claude integrations

Product	Prompt
Claude Projects	Claude Projects - Thread Claude system prompt
Claude Design	Claude Design system prompt · skills · starter components
Claude Cowork	Claude Cowork system prompt · Dispatch · setup skills
Claude Science	Claude Science system prompt
Claude for Microsoft 365	Claude for Excel · Claude for Word · Claude in PowerPoint
Claude in Chrome	Claude in Chrome extension system prompt
Claude iOS app	Claude mobile iOS system prompt

OpenAI — ChatGPT system prompts

Model	Prompt
ChatGPT 5.6 Sol	ChatGPT 5.6 system prompt (Sol, extra high)
ChatGPT 5.5 Thinking	ChatGPT 5.5 Thinking system prompt
ChatGPT 5.5 Instant	ChatGPT 5.5 Instant system prompt
ChatGPT 5.4	ChatGPT 5.4 Thinking system prompt
ChatGPT 5.3	ChatGPT 5.3 Instant system prompt
ChatGPT 5.2	ChatGPT 5.2 Thinking system prompt
ChatGPT 5	ChatGPT 5 Thinking system prompt · Agent mode
ChatGPT Atlas	ChatGPT Atlas system prompt
ChatGPT 4.5	ChatGPT 4.5 system prompt
ChatGPT 4o	[ChatGPT 4o system