Claude system prompts as a git timeline

This article describes a project that converts Anthropic's published system prompts for Claude into a git-based exploration tool. By breaking down the monolithic Markdown source into granular files per model, family, and revision with timestamped commits, researchers can use git commands like log, diff, and blame to trace prompt evolution, compare differences, and attribute changes to specific dates without manual parsing. The author used Claude Code to generate separate files for each model and fake commit dates for GitHub browsing, enabling detailed analysis of changes between Opus 4.6 and 4.7. This is a technical tutorial on using git for AI prompt version control.