claude-code-system-prompts
CLAUDE.md0 starsChanged 9 months agoMITView on GitHub
System prompts extracted via script from the Claude Code npm package's compiled JavaScript source. Maintained by Piebald AI, not by Anthropic. See the Extraction section in README.md for details on the extraction method. Claude Code is Anthropic's CLI tool for agentic coding. It is distributed as a compiled npm package (@anthropic-ai/claude-code). Source code is not publicly available. The anthropics/claude-code GitHub repository contains issues and releases only.
2 other projects use a version of this.
Adopted by
Steady: 0 new projects took it in the last 4 weeks, none the 4 weeks before.thin data
Most recently taken up by
- Najeebullah3124/awesome-claude-universeword for word, first seen Apr 24, 2026
- Piebald-AI/claude-code-system-promptsword for word, first seen Feb 9, 2026
Other versions2 projects use a version of this.
Word for word · 2
- Piebald-AI/claude-code-system-prompts★ 13k100% same
- Najeebullah3124/awesome-claude-universe★ 2100% same
Edited · 0
None found.
Wrote their own version · 0
None found.
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
The file
We split this CLAUDE.md into the rules it gives an agent
1 rule. About 0 are common, 1 is distinctive, and 0 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈1
Distinctive · estimate
This author's own choices. Worth a look.
0
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Distinctive: line 16
Local patching: Use tweakcc to customize individual prompt pieces in your local Claude Code installation
≈ “Common” is an estimate: at least 1 in 5 of the 26,980 CLAUDE.md files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
Claude Code System Prompts
What this repository is
System prompts extracted via script from the Claude Code npm package's compiled JavaScript source. Maintained by Piebald AI, not by Anthropic.
See the Extraction section in README.md for details on the extraction method.
What Claude Code is
Claude Code is Anthropic's CLI tool for agentic coding. It is distributed as a compiled npm package (@anthropic-ai/claude-code). Source code is not publicly available. The anthropics/claude-code GitHub repository contains issues and releases only.
How to use these files
- Reference: Understand what prompts Claude Code uses and how they change across versions
- Local patching: Use tweakcc to customize individual prompt pieces in your local Claude Code installation
- Feature requests: For changes to Claude Code's prompts, file issues at anthropics/claude-code/issues
For AI agents working with this repository
- These files are extracted reference material, not modifiable source code
- Editing files here does not change Claude Code's behavior
- The
system-prompts/directory contains markdown files with YAML frontmatter noting the Claude Code version and template variables - Template variables like
${BASH_TOOL_NAME}are interpolated at runtime by Claude Code — they appear as literal strings in these files - The CHANGELOG.md tracks prompt changes across Claude Code versions
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Your trail
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.