[Yandex Cloud documentation](../../index.md) > [Yandex Key Management Service](../index.md) > API reference > REST > Overview

# Key Management Service API: REST reference

This API reference is organized by resource. Actions are performed by sending HTTP requests to resource URLs or making RPC calls. For more information about API architecture, see [API Concepts](../../api-design-guide/index.md).

**Interface definitions** available at [GitHub](https://github.com/yandex-cloud/cloudapi/tree/master/yandex/cloud/kms/v1).

**Service URL**: `https://kms.api.cloud.yandex.net`

#|
||Service | Description ||
|| [Operation](Operation/index.md) | A set of methods for managing operations for asynchronous API requests. ||
|| [SymmetricCrypto](SymmetricCrypto/index.md) | Set of methods that perform symmetric encryption and decryption. ||
|| [SymmetricKey](SymmetricKey/index.md) | Set of methods for managing symmetric KMS keys. ||
|#