Xaero-Seed

Xaero Seed reads the world seed and works out where structures are and which biome every area has, then draws that on Xaero's Minimap and World Map. It also covers places you haven't been to yet.

It's client-side only. Nothing gets generated, no chunks are loaded and nothing is sent to the server. Everything is computed from the seed in the background.

What it shows

Structures. Villages, outposts, mansions, monuments, ancient cities, trial chambers, strongholds, fortresses and bastions, end cities and the rest of the vanilla list (20 types). Each one shows up with its matching item as the icon: a bell for villages, an eye of ender for strongholds, and so on. Hover an icon on the World Map to get its name and coordinates. Right click it to turn it into a normal Xaero waypoint.

Biomes. Unexplored parts of the World Map get colored by biome, so you can see where the nearest jungle or cherry grove is before going there. Hover a colored area to get the biome name. You can also lay the colors over the explored map at half opacity.

Controls

There are three buttons at the top right of the World Map: one for structures, one for biomes, and a settings screen. In the settings you can pick which structure types to show, change the icon size and the biome opacity, and set how far around you structures are computed.

J toggles structures and H toggles biomes. Both keys can be rebound.

Commands live under /xaero-seed. /xaero-seed structures list prints the 10 nearest structuredinates.

Seed

In singleplayer the seed is picked up on its own. On a server, enter it once with /xaero-seed seed <value> and it's remembered for that server. Plenty of servers don't allow seed-based tools, so check the rules first.

Accuracy

Structure positions come from the same placement code the game uses, and I checked them against ed chunks. Biomes match the generated world in about 99% of sampled spots. A few things to know:

• Cave biomes (lush caves, deep dark) aren't shown, only surface biomes.
• Some structures depend on templates the client can't always check. Those are drawn dimmed and
• On a server with datapacks that change worldgen, results will be wrong and the mod can't tell.
• Spigot and Paper servers can change structure salts. If yours does, you can enter the values in the config.
• Superflat and custom world types aren't supported.

Requirements

• Minecraft 26.2 with Fabric Loader and Fabric API
• Xaero's Minimap and/or Xaero's World Map (the mod does very little without them)
• Optional: Mod Menu and YetAnotherConfigLib for the in-game config screen