A lightweight utility server hosted on Cloudflare Workers that gives Claude diff and patch capabilities over HTTP. It exposes tools for generating unified diffs between text versions and applying patches to content, which is handy when you need Claude to compare file versions, show precise changes, or apply specific modifications without rewriting entire documents. The streamable HTTP transport means you can point Claude at it without running anything locally. Reach for this when you're doing iterative editing work and want to see exact line-by-line changes, or when you need to apply patches programmatically during code reviews or documentation updates.