Always Show Debug Info

Some multiplayer servers turn on the reducedDebugInfo gamerule, which tells connected clients to hide parts of the debug menu. This mod forces the F3 screen to show its full contents regardless of that setting, and it does not bypass the server in any other way. The gamerule check on the client is ignored, so the information stays visible while the screen is open. Some values are simply not sent by the server while the gamerule is on, and the mod cannot recover those, so the screen shows what the client receives.

The debug screen then lists the usual data: player position and coordinates, the current biome as minecraft:biome, day count for the world, local difficulty, light levels, chunk generation statistics, particle render statistics, and entity spawn counts that show how many active mobs contribute to the mob cap. Looking at a block shows its fluid states and tags, and looking at an entity shows its details. The F3 key combinations for entity hitboxes, chunk borders, copying coordinates and copying block or entity NBT data to the clipboard all keep working.

The mod is client-side only, so a server does not need it, and it is published for Fabric alone. Its files cover 26.1 – 26.1.2 in three releases, the latest being 1.0.0 for 26.1.2. The code is released under CC0 1.0 Universal, so the work is in the public domain and not open source in the license sense of the catalog.