Server Members Intent

Enable the Privileged Gateway Intent: Server Members

In order to cache all guild members, in turn allowing @mention in-game, you'll need to enable the Privileged Gateway Intent "Server Members" for your bot.

You should only use this feature for small servers, as it requires the bot to eager-load all members into memory!

After adding a bot to your application, on the same page, locate the "Privileged Gateway Intents" and enable the "Server Members Intent".

Enable the Privileged Gateway Intent: Server Members

Now that the intent is active for your bot, you can proceed to enable the caching of members by Chatter Discord. Go ahead and try @Nickname someone from within Minecraft!

config/chatter/discord/bot.json5

{
	// ...

	/* True if all guild members should be cached, in turn allowing @mentions
	   NB: This requires the Privileged Gateway Intent 'Server Members' to be enabled on your Discord bot!
	*/
	"cacheMembers": true
}