BlockSpawn is a Minecraft plugin for Paper 1.21.4 (Java 21), allowing you to disable the natural spawning of specific mobs.

Supported causes like:

• Spawn Eggs
• /summon
• CUSTOM causes

will continue to work.

It works in all worlds and stores mob names in a config file.

Everything is written in a single Java file for easy deployment and readability.

/blockspawn <mob> – Disables natural spawning of the specified mob

/unblockspawn <mob> – Re-enables spawning for the specified mob

/listblocked – Displays the current list of blocked mobs

plugin.yml – Registers commands and permissions

blocked.yml – Stores blocked mob types (auto-generated)

pom.xml – Maven configuration for Java 21 and Paper API

1. Download the .jar file from the Maven `target` folder
2. Place it inside the `plugins/` directory
3. Start your Paper 1.21.4 server
4. Use commands in-game to control spawning

• Java 21
• PaperMC 1.21.4
• Maven 3.9+ (to build from source)

• Paper 1.21.4
• Spigot 1.21.4 (basic compatibility only)
• OpenJDK 21