LowApps

Use Application Commands

USE_APPLICATION_COMMANDS

Controls whether members can use slash commands. Your bot does not need it to register or respond to commands; that is what the applications.commands scope is for.

Value: 2147483648
Bit: 1 << 31
Hex: 0x80000000
Channel types: Text, Voice, Stage

Discord's description: “Allows members to use application commands.”

In the bot examples

Utility / slash-command botdoes not need it

That permission controls members, not your bot.

Start a calculation with it Discord docs