API Documentation


Write and test applications using any HTTP client in any programming language to query meta-data about your account, phone numbers, calls, text messages, and recordings.


TwiML is a set of XML instructions you can use to tell Twilio what to do when you receive an incoming call or SMS. Use TwiML to create all kinds of interactive voice and SMS applications.

Client API

Twilio Client lets any browser, phone or tablet talk using only a data connection. And best of all, your existing applications will already work with Twilio Client.