[Документация Yandex Cloud](../../../index.md) > [Yandex Managed Service for Sharded PostgreSQL](../../index.md) > Справочник API > gRPC (англ.) > Overview

# Managed Service for SPQR 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/mdb/spqr/v1).

**Service URL**: `https://mdb.api.yandexcloud.kz`

#|
||Service | Description ||
|| [Backup](Backup/index.md) | A set of methods for managing SPQR Backup resources. ||
|| [Cluster](Cluster/index.md) | A set of methods for managing SPQR Cluster resources. ||
|| [Database](Database/index.md) | A set of methods for managing SPQR Database resources. ||
|| [Maintenance](Maintenance/index.md) | A set of methods for managing maintenances in a service. ||
|| [Operation](Operation/index.md) | A set of methods for managing operations for asynchronous API requests. ||
|| [ResourcePreset](ResourcePreset/index.md) | A set of methods for managing ResourcePreset resources. ||
|| [User](User/index.md) | A set of methods for managing SPQR User resources. ||
|#