Claude Code System Prompts
A continuously updated extraction of every part of Claude Code's system prompt, including built-in tool descriptions and sub-agent prompts, with token counts and a changelog across hundreds of versions.
This repository publishes an up-to-date extraction of Claude Code's system prompts: the descriptions behind its built-in tools, the separate prompts for its built-in sub-agents, and the prompts behind utility functions such as conversation compaction, project-memory-file generation, the status line, web fetching, shell-command handling, security review and agent creation, together with each prompt's token count for the current Claude Code release.
Because Claude Code assembles its behavior from more than 500 separate strings inside a large, minified JavaScript file rather than one fixed prompt, the project extracts them directly from the compiled source using a script, so the result matches what actually ships, and it also maintains a changelog tracking how these prompts have changed across roughly 300 prior versions of Claude Code.
A companion tool, mentioned in the same project, lets a user edit individual prompt pieces as separate Markdown files and then patch their own npm-based or native Claude Code installation with the changes, including diffing and conflict handling when both the user and a new Claude Code release have modified the same prompt.