API Documentation

Use the OneSend API send SMS to your customers.

Getting started

To get started, create a new account on our website, then read about how to make requests for the resources you need to access using our HTTP APIs.

Learn how to authenticate your API requests.

Understand how to work with paginated responses.

Read about the different types of errors returned by the API.

Learn how to send a SMS using OneSend

Learn how to prevent people from receiving messages.