> [!WARNING] > **The v1 API has been deprecated and is replaced by [API v2](https://developer.churchsuite.com/).** > The v1 API will be turned off on 1st August 2027 - all existing applications should be migrated to use the v2 API. # ChurchSuite API v2 ## Introduction ChurchSuite offers a developer API for customers who wish to build custom applications and website integrations with their ChurchSuite modules. To understand how the ChurchSuite API might be able to support your ministry, check out our [Support Article](https://support.churchsuite.com/article/454-developer-api). For a full explanation of how to authenticate and use the API, and what access is available, please see our [developer documentation site](https://developer.churchsuite.com). ## OpenAPI The ChurchSuite APIs are documented using OpenAPI 3.0 specifications, which can be found in this repository.