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

**Service URL**: `https://cpl.kms.api.yandexcloud.kz`

#|
||Service | Description ||
|| [AsymmetricSignatureCrypto](AsymmetricSignatureCrypto/index.md) | Set of methods that perform asymmetric signature. ||
|| [AsymmetricSignatureKey](AsymmetricSignatureKey/index.md) | Set of methods for managing asymmetric signature keys. ||
|| [Operation](Operation/index.md) | A set of methods for managing operations for asynchronous API requests. ||
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