JustCall

JustCall REST API

REST API for placing calls, sending SMS and MMS messages, managing contacts, phone numbers, users, and call dispositions in JustCall. Authentication uses an API key and API secret passed in the Authorization header. Webhooks notify on completed calls and SMS events.

Documentation GitHub

Documentation

https://developer.justcall.io/docs/overview

https://developer.justcall.io/reference

Other Resources

Send SMS Endpoint

https://developer.justcall.io/reference/texts_new_v21

https://justcall.io/product/api-and-webhooks/

https://raw.githubusercontent.com/api-evangelist/justcall/refs/heads/main/apis.yml

OpenAPI Specification