Cookbook
Integrations
Stable
Install Leo SMS Gateway
A two-way SMS/MMS gateway your app owns — inbound Twilio webhook to database rows, a threaded inbox UI, outbound send with delivery receipts, group texts — plus the Codex CLI /goal loop that checks the text inbox (and Gmail) every 10 minutes, sleeps itself between ticks, and asks a human before answering anyone.
Related
Cookbook
Install Agent Gmail Service
The email half. Set it up if you want the same loop to check a Gmail inbox as well as the text inbox.
Cookbook
Twilio — SMS Sending & Phone Verification
The layer underneath this one — credentials, the Twilio client, one-off sends, and phone verification.
Link
Twilio Conversations API docs
Official reference for the group-messaging API used in Layer 6.