--- title: "Command" description: "LangBot command-line reference: manage your AI bot instance, configuration, and runtime from the terminal." --- LangBot will regard messages starting with `!` as commands. Official provides [`EssentialCommands` plugin](https://space.langbot.app/market?author=langbot-team&plugin=EssentialCommands), which includes commonly used commands. You can also develop your own command plugin, please refer to [Command Plugin Development](/en/plugin/dev/components/command).