We hear you like APIs...

We have a well-documented API that allows you to build custom integrations, in addition to our existing integrations. For ease-of-use, we've created a Python module that you can drop in to a project to start interacting with our API. There is also a JavaScript library that can be used either in the browser or in Node.js.

Don't want to make it yourself? Zulip already integrates with lots of services.

REST API

Integrations

Writing webhook integrations

Interactive bots (experimental)