Twilio conferences, participants, queues, members, recordings, transcriptions, recording add-on results, and payload metadata. This bounded leaf carries 38 hash-pinned Twilio 2010-04-01 operations. Every mutation requires approval, reads are uncached and require no approval, form mutations expose closed typed fields, JSON responses preserve unsafe integers, and Basic credentials come only from the enrolled connection. Credential-bearing routes and the live caller-ID validation-code route are excluded fail-closed.