Summary & Key Takeaways ​

commit-rewriter is a new web application for editing Git commit messages. It helps clean up "coding agent cruft" and private issue IDs. The tool can be run locally via uvx commit-rewriter. It creates a timestamped branch before rewriting commits for safety. Edits apply to all commits from the first modified one to the most recent. This utility addresses a specific need for developers working with AI-assisted code.

Our Commentary ​

Simon Willison always delivers these incredibly practical tools. commit-rewriter feels like a direct response to the current AI coding boom. We've all seen those messy, verbose AI-generated commits. This is exactly the kind of small, focused utility that makes a developer's life easier. I appreciate the safety net of the timestamped branch; that's a thoughtful touch.