[Документация Yandex Cloud](../../../index.md) > [Yandex Key Management Service](../../index.md) > Справочник API > gRPC (англ.) > Overview

# Key Management Service API: gRPC reference

Actions are performed by 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://cpl.kms.api.yandexcloud.kz`

#|
||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. ||
|#