[Yandex Cloud documentation](../../index.md) > [Yandex Cloud API concepts](../index.md) > API methods > Overview

# API methods

[Yandex Cloud APIs](https://github.com/yandex-cloud/cloudapi) use a set of methods for resource management. Each gRPC call is mapped to a particular HTTP method. For example, the `List` call is mapped to the `GET` method, and the `Create` call is mapped to the `POST` method. Mapping to HTTP requests is specified in a method's description in [google.api.http](https://github.com/googleapis/googleapis/blob/master/google/api/http.proto) annotation.

There are two sets of methods in APIs:

* [Standard API methods](standard-methods.md) allow you to perform CRUD operations: create, retrieve, update, and delete resources. Standard methods have the same signature and work in the same way for all APIs they are used in.
* [Additional API methods](custom-methods.md) enhance the functionality of standard methods. You can use them to attach a disk, restart a VM, and perform other operations. The signature of additional methods differs from that of standard ones.