Show HN: Mdt – save tokens reading changes to Markdown (github.com)

I use shared markdown files to collaborate with agents. Their biggest complaint was that, when content changed, they needed to either re-read the full file or write code to find the difference.

So I made mdt. It's light - one binary, one sqlite file - and lets your agent track the changes to a shared file, so that it only reads the diff.

Ping me if I can make it better.