This repository tracks changes to Claude Code's internal system prompts and feature flags across different versions. It serves as the data source for an automated Twitter/X bot (@ClaudeCodeLog) that analyzes and summarizes these changes for users interested in the evolution of Claude Code's behavior and features. The primary benefit is providing transparency and detailed insights into Claude Code's development.

How It Works

The project maintains version-tagged snapshots of Claude Code's system prompt (cc-prompt.md) and feature flags (cc-flags.md). This structure allows for easy comparison between versions using GitHub's diffing capabilities. The repository's data fuels an automated bot that detects new Claude Code releases, extracts relevant files, analyzes prompt and flag modifications (potentially using AI for diff generation), and posts detailed, deep-linked summaries to Twitter/X.

Quick Start & Requirements

This repository primarily serves as a data store and tracking mechanism. The README does not provide direct installation or usage instructions for cloning and running the changelog tracking itself. It references related tools like cchistory for extraction and Claude Code documentation for the underlying product.

Highlighted Details

• Automated changelog generation via the @ClaudeCodeLog Twitter/X account.
• AI-powered diff generation for analyzing prompt and feature flag changes.
• Deep-linking to specific line changes within GitHub diff views for granular inspection.
• Tracks both internal system prompts and Statsig feature flags.

Maintenance & Community

The project is maintained by marckrenn. It powers the @ClaudeCodeLog Twitter/X account and relies on the cchistory tool for data extraction. Further technical details on cchistory are available via a linked explanation. No direct community channels (like Discord/Slack) or roadmap links are provided in the README.

Licensing & Compatibility

The README does not explicitly state the repository's license. Therefore, its compatibility for commercial use or closed-source linking cannot be determined from the provided text.

Limitations & Caveats

The repository focuses solely on tracking changes to Claude Code's system prompt and feature flags; it does not track other aspects of Claude Code's functionality or performance. The README does not detail any known bugs, alpha status, or specific unsupported platforms. The lack of explicit licensing information is a significant caveat for potential adopters.