system_prompts_leaks
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.
Install / Use
npx skills add asgeirtj/system_prompts_leaksInstalls into whichever agent you are using.
CLAUDE.md
Claude Code project instructions
Quality Score
Category
AI & Machine LearningSupported Platforms
Our assessment of system_prompts_leaks
system_prompts_leaks scores 93/100 on our quality scale, 192nd of 961 AI & Machine Learning skills we index (top 20%).
Its CLAUDE.md is 22 KB long, well organised into 27 sections and no code examples: a thorough specification that gives an agent plenty to work with.
With 70,891 GitHub stars, it is one of the more widely adopted skills in the catalogue.
Maintenance, license and trust
- The repository was last updated yesterday, so system_prompts_leaks is actively maintained.
- Our last check on 2026-10-17 found the source still online.
- It is released under the CC0-1.0 license, a permissive license that allows use, modification and commercial use with attribution.
- Its trust signals score 100/100, with no cautions. These come from repository metadata, not a code audit — read the skill file before letting an agent act on it.
Safety scan
No issues foundOur scan of the whole file found no instruction hijacking, hidden characters, credential access, data exfiltration or destructive commands. An AI review of the same text found nothing harmful.
AI review by kimi-k2.7-code on 2026-09-24. Automated pattern scan on 2026-09-24. It catches known dangerous patterns, not every risk — read a skill before letting an agent act on it.
system_prompts_leaks compared with similar skills
All 4 of these similar skills score higher than system_prompts_leaks; compare them before choosing.
| Skill | Score | Stars | Updated | Format |
|---|---|---|---|---|
| system_prompts_leaks (this skill)by asgeirtj | 93 | 70.9k | 1d ago | CLAUDE.md |
| claude-memby thedotmack | 100 | 113.6k | today | CLAUDE.md |
| taste-skillby Leonxlnx | 100 | 110.8k | 1d ago | CLAUDE.md |
| Agent-Reachby Panniantong | 100 | 109.3k | today | CLAUDE.md |
| Understand-Anythingby Egonex-AI | 100 | 91.0k | 11d ago | CLAUDE.md |
Frequently asked questions
- How do I install system_prompts_leaks?
- Run
npx skills add asgeirtj/system_prompts_leaks. The install tabs above show the steps for each supported agent. - Which AI agents does system_prompts_leaks work with?
- It is written for Claude Code, Cursor, Gemini CLI and OpenAI Codex, as a CLAUDE.md file. Other agents that read the same format can often use it too.
- Is system_prompts_leaks safe to use?
- Our scan of the whole file found no instruction hijacking, hidden characters, credential access, data exfiltration or destructive commands. An AI review of the same text found nothing harmful. It is CC0-1.0-licensed and scores 100/100 on trust signals. Skills are instructions an agent will follow, so read the file before installing it and do not approve commands you do not understand.
- Is system_prompts_leaks still maintained?
- The repository was last updated yesterday, so system_prompts_leaks is actively maintained.
Skill content
View source on GitHubOpen Source Agent Analytics
Understand your agents in production
</div>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.
Most recent additions/changes
| What | Date | Link | |------|------|------| | Claude Opus 5.5 | September 22, 2026 | Claude Opus 5.5 System Prompt | | Claude Code (Opus 5.5) | 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 | | Claude Code headless (Fable 5.1) | September 5, 2026 | Claude Code headless system prompt (Fable 5.1) | | Codex GPT-6-Astra | 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 | | Codex GPT-5.6 (Sol variant) | 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 | | Kimi K2.6 | July 14, 2026 | Kimi K2.6 system prompt | | Perplexity Deep Research | July 14, 2026 | Perplexity Deep Research 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 | |-----------|--------| | Claude Code (Opus 5.5) | Claude Code system prompt (Opus 5.5) | | Claude Code (Fable 5.1) | Claude Code system prompt (Fable 5.1) | | Claude Code (Opus 5) | Claude Code system prompt (Opus 5) | | Claude Code (Fable 5) | Claude Code system prompt (Fable 5) | | Claude Code (Opus 4.8) | Claude Code system prompt (Opus 4.8) | | Claude Code (Sonnet 5) | 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 | | Skills & commands | Claude Code skills · Slash commands | | MCP servers | Claude in Chrome MCP server system prompt | | 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 prompt · Deprecation preparedness | | Voice modes | ChatGPT advanced voice mode system prompt · Legacy voice mode | | Personalities | ChatGPT personality instructions | | Memory | ChatGPT advanced memory system prompt |
Codex system prompts
| Model | Prompt | |-------|--------| | Codex GPT-5.6 | Codex GPT-5.6 system prompt (Terra/Luna) · Sol | | Codex GPT-5.5 | Codex GPT-5.5 system prompt · Full prompt · Friendly · Pragmatic | | Codex GPT-5.4 | Codex GPT-5.4 system prompt · Mini | | Codex Spark | Codex Spark system prompt | | Codex modes | Plan mode · Auto-review · Computer use · Control Chrome · In-app browser | | Personas | Friendly · Pragmatic |
API-injected prompts
| Model | Prompt | |-------|--------| | GPT-5.5 | GPT-5.5 API system prompt · Pro | | GPT-5.4 / 5.3 | GPT-5.4 API · 5.3 Chat · 5.3 Codex | | o-series & older | o3 / o4-mini reasoning-effort variants |
<details><summary>Old models, tools & deprecated features</summary>| | | |--|--| | Old models | GPT-4.5 · GPT-4.1 · GPT-4.1 Mini · o3 · o4-mini · GPT-5.2 Mini (free) · ChatGPT 4o Mini | | Old 4o variants | 4o WhatsApp · 4o new personality · Monday GPT | | Old tools | Canvas · [Image gen](OpenA
Truncated for display — read the full file on GitHub.
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Trust signals
From repository metadata: license, adoption, age and documentation. Not a code audit — see the Safety scan above for what the skill file itself contains.