The Documentation Hub

Welcome to Kaleyra Documentation Hub. You can find comprehensive API docs, integration guides and docs to getting you started. In case you're stuck, refer to the docs here and you're good to go

Get Started    

Getting Started with Voice

Learn about the concepts that our APIs can help you build


Kaleyra Voice API facilitates better control on the way you communicate through an API. Dynamically built API enables you to initiate click-to-call, request for number blacklisting, request for call details and create, edit follow ups.

Additionally, you'll be able to view below, the concepts that can be used through Kaleyra Voice API:

API Response format

API Response Parameters

API Authentication

API Error Codes

API Submission Status

API Operator level status

Base URL

To start using Voice Services, the base URL with default response is provided below:

Still facing trouble using the API?

We have the best support team that works 24*7 providing regional language support in India. You can get in touch with them at and we'll address your concern.

If you're a global user and need quick help regarding your concerns, mail us at