The Zulip API

Zulip's APIs allow you to integrate other services with Zulip. This guide should help you find the API you need:

First, check if the tool you'd like to integrate with Zulip already has a native integration.
Next, check if Zapier or IFTTT has an integration; Zulip's native integrations with Zapier and IFTTT often allow integrating a new service with Zulip without writing any code.
If you'd like to send content into Zulip, you can write a native incoming webhook integration or use Zulip's API for sending messages.
If you're building an interactive bot that reacts to activity inside Zulip, you'll want to look at Zulip's Python framework for interactive bots or Zulip's real-time events API.
If you'd like to do something else, check out the full REST API, generally starting with installing the API client bindings.