You can go to Settings → Developers to enable it. Follow the instructions in the app or read the documentation.
Yes. In Beeper Desktop, go to Settings → Developers → MCP and follow the steps. Learn more here.
Beeper Desktop API runs entirely on your device and is only available when the app is running.
Yes. See the limitations section in the docs.
Email developers@beeper.com, DM us on X, or join the Beeper Devs community: Beeper Desktop → Settings → Developers → Community chat (or Matrix: #beeper-developers:beeper.com).