This repo holds the meta and master.mdb files for the mobile game, Uma Musume: Pretty Derby.

This project was retired on October 29, 2025, and the hosted API and its supporting apps have been shut down. I worked with Katboi from UmaViewer beforehand, so that app wasn't affected.

I had been meaning to step away from maintaining this project. By the time I retired it, I hadn't played the game in over three years, but I've always enjoyed this community and wanted to provide some kind of support for as long as I could. I open-sourced everything except the CI/CD, which was a very simple setup, so anyone who wants to pick up where I left off is welcome to fork it.

Older copies of the master.mdb is at the archived repo here.