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Our API offers a host of functionality to help our creators automate a bunch of tasks to help make their lives as easy as possible and developers build apps for our ever-growing Kit App Store. As long as the authenticated account’s plan is eligible for use with the API, apps and legacy integrations, you will be able to create and send broadcasts to your subscribers, manage your email list through tags and custom fields, import purchase data from your favourite e-commerce platforms and much, much more. If you are a third party developer, you can use the Kit API to link together or build on top of the Kit platform. Then, once your app is complete, you will be able to publish it to the thousands of creators using our platform today.

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New to Kit API V4

Kit API V4 introduces many new features and improved functionality from our previous versions such as:
  • Improved performance
  • Cursor-based pagination
  • Bulk requests and async processing
  • New functionality for broadcasts, including access to subscriber filters and improved HTML support
  • Better access to subscriber stats
  • Bug fixes
  • and much, much more.
See our guide on upgrading from V3 to V4 for more details.
Kit API V4 is the latest version of our API. API V3 is still available for use but is deprecated and will be sunset in the future. We recommend using API V4 for all new projects.

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Quick Access

Kit App Store Overview

Learn everything you need to know to build for the Kit App Store.

Upgrading from V3

Using V3 of the Kit API? Find out about breaking changes between versions, to get you up and running on V4 in no time.