Mod Doctor
A lightweight developer tool that scans Minecraft mods for missing, broken, or suspicious registrations, assets, recipes, tags, and data files.
The Mod Doctor results screen in action — showing a detected warning with its rule ID, evidence, severity, and suggested fix.
A full modpack scan completed successfully — 10,152 entries checked across 4 mods, with a generated report ready for review.
Customize Mod Doctor's diagnostic rules directly in-game — enable or disable individual checks, change severity levels, filter by category, and save your preferred configuration.