Often, you can handle all interaction with the RingCentral API using methods provided in the SDKs without ever needing to learn more about the lower level details of the API communication itself.
Any communication between an external program and RingCentral is performed through one of our APIs. The APIs are agnostic to development platform and language, allowing you much more flexibility.
RingCentral provides documentation for each API we offer. The documentation has details on each API call, including required fields and response details. For a complete list of the RingCentral APIs, visit here.
For those who prefer to write in PHP we have provided an SDK here