Relevant APIs: visualization extensions

Qlik Sense comes with a number of client-side APIs that can be used for building visualization extensions.

Qlik Engine API

The Qlik Engine API is a Web-socket protocol that uses JSON to pass information between the Qlik engine and the clients.

It works on any platforms and with any programming language that include a Web-socket library.

See: Qlik Engine API

Backend API

JavaScript API that provides public methods for communicating with the Qlik engine which can be called from both visualization extensions and mashups.

In short terms, the Backend API is a wrapper around some of the Qlik Engine API methods but with the difference that the Backend API is aware of the context.

See: Backend API

Extension API

JavaScript API that provides public methods for building visualization extensions.

See: Extension API

Mashup API

JavaScript API that provides public methods for building mashup websites. Some of these methods can also be called from visualization extensions.

See: Mashup API