[Home](./index.md) > [server](./server.md) > [ChatManager](./server.chatmanager.md) > [registerCommand](./server.chatmanager.registercommand.md) ## ChatManager.registerCommand() method Register a command and its callback. **Signature:** ```typescript registerCommand(command: string, callback: CommandCallback): void; ``` ## Parameters

Parameter	Type	Description
command	string	The command to register.
callback	[CommandCallback](./server.commandcallback.md)	The callback function to execute when the command is used.

**Returns:** void