[Yandex Cloud documentation](../../../index.md) > [Yandex IoT Core](../../index.md) > Devices API reference > gRPC > Overview

# IoT Core Service: 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/iot/devices/v1).

**Service URL**: `https://iot-devices.api.cloud.yandex.net`

#|
||Service | Description ||
|| [DeviceData](DeviceData/index.md) | A set of methods to work with IoT Core messages on behalf of device ||
|| [Device](Device/index.md) | A set of methods for managing devices. ||
|| [Operation](Operation/index.md) | A set of methods for managing operations for asynchronous API requests. ||
|| [RegistryData](RegistryData/index.md) | A set of methods to work with IoT Core messages on behalf of registry ||
|| [Registry](Registry/index.md) | A set of methods for managing registry. ||
|#