Cobblemon Repel

(Also available on Modrinth)

Cobblemon Repel is a Fabric addon to Cobblemon that adds 3 new blocks that prevent Pokémon spawns in a configurable radius. This mod is completely server-side and can be added to the server with players still able to join even without the mod installed, thanks to Polymer. It can still be used in singleplayer however.

Repel Super Repel Max Repel

The Repel comes in three variants: regular, Super and Max. The regular Repel stops Pokémon spawns in a 32 block radius around it, while Super and Max double and triple the range respectively.

Recipes

Repel Recipe Super Repel Recipe Max Repel Recipe

Any Apricorn can be used, any Cobblemon Berry can be used, any Experience Candy can be used, any Evolution Item can be used

Configuration

The range of each Repel can be configured with the /gamerule command.

repelRange - The base range used for regular Repels, other Repels use this with a multiplier, can be a value between 0 and 512, default is 32. Setting this value to 0 will completely disable the Repels
superRepelRangeMultipler - The multiplier for the Super Repels, can be a value between 1 and 10, default is 2
maxRepelRangeMultipler - The multiplier for the Max Repels, can be a value between 1 and 10, default is 3

Mod Support

Cobblemon Repel has support for Cobblemon Spawn Notification where it disables the broadcast if the spawned Pokémon was caught by a Repel. (As of 1.7, this is no longer the case as Spawn Notification now surpresses the notification on its own if the spawn was cancelled.)

(Neo)Forge?

I won't port it to NeoForge, due to Polymer being Fabric only.

Someone did port this mod to NeoForge however! You can find it here.