Channels: everything that talks to the outside — Public, Live, Paused

Three states, and the difference matters. Public means anyone holding the address gets a real answer right now. Live means the channel is running but exposes nothing of yours — an outgoing webhook reaches out to you, and an API client needs a secret as well as the client id you can see here. Paused means it answers as closed; nothing is deleted, and the address is never reused for anything else.