This is a client pack, not a server pack. If you run a server, the useful question is what it means for yours.
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Amazing Xray is kesselot's Fabric pack, with over 600,000 downloads on CurseForge. It bundles an xray view that highlights ores and valuable blocks through stone, with a menu for choosing exactly which blocks are shown, plus performance mods and shader support. It is designed to be small, fast and compatible with vanilla servers.
The key word there is client. Everything the pack does happens in the rendering on your own machine — it changes what you see, not what the world contains.
There is nothing to put on the server side, and trying to add a client rendering pack to a server install will usually stop the server starting at all. Run a normal server for whatever Minecraft version your group is on, and let players install their own client packs.
This is why the pack advertises vanilla-server compatibility: it works precisely because the server never knows it is there.
If it is a private server with friends, it means very little — if everyone agrees to use it, it is just a different way to play, and plenty of groups do exactly that on creative-adjacent or casual servers.
If it is a public or competitive server, it matters. Because xray is client-side, no plugin can detect it reliably, and no mod list requirement will keep it out. The only effective answer is to stop sending the information in the first place.
A lot of confusion around modded servers comes from this one distinction. Content mods that add blocks, items or mobs must be on both sides. Rendering and interface mods — shaders, minimaps, FPS packs, xray — live only on the client. Knowing which category a pack falls into saves a lot of failed server starts.
There are less contentious ways to get there on a server everyone shares: a mining-focused mod that everyone installs, a datapack that increases ore rates, or simply turning ore generation up in the world settings. Those apply to everyone equally, which usually keeps a server together better than half the players quietly using an xray pack.
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