Interactive Command and Control

Our new real-time web service protocol provides for persistent, asynchronous connections - enabling faster application development with advanced control.

Advanced Call Control

Your application has complete control between events. Change codecs on-the-fly, move calls across different endpoints, or even control all the JavaScript for WebRTC video conferences.

Smarter Error Handling

Unconstrained by conformance to legacy APIs, the RELAY client provides the modern programmer with both more human readability and granularity in the error handling and response.

Granular Customization

While our backward compatible LāML APIs are designed for simplicity and compatibility, RELAY APIs are designed to give you granular control to optimize settings for your specific application.

Native SignalWire Functions

RELAY APIs are our recommended choice when developing on features native to SignalWire, including support for our native address objects (used in E911 provisioning), number groups, provisioning phone numbers, and extended support for SIP endpoints.

Powerful SDKs for Popular Languages

Getting started in your preferred language couldn't be easier.

Power and Flexibility Asynchronous APIs

Our real-time APIs are designed for asynchronous control, enabling the most responsive interactions and application logic. Ideal for advanced real-time call functions.

Simplicity Synchronous APIs

Familiar and secure, our synchronous REST APIs simplify real-time control with support for the polling and event logic built right into the framework.

Priced to Disrupt

As the original geeks of software-defined telecom, our mission is to democratize the technology, not price-gouge you for numbers, minutes, or messages. Our industry-low rates are offered to all customers regardless of volume. No contracts. No commitments.

See pricing