> For the complete documentation index, see [llms.txt](https://icure.gitbook.io/icure/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://icure.gitbook.io/icure/icure-data-stack/rest-api-calls.md).

# REST API calls

The REST API enables direct access to the iCure data, while maintaining the encryption perimeter, to achieve connection with eHealth services or other EHRs and custom Apps.

In the following categories, detailed description of the API calls to query or modify data in the iCure Database.

The REST API is necessitated for use with the [Mobile/Web SDKs](/icure/icure-data-stack/mobile-web-sdks.md), as they are necessary for the decryption of the relevant information.