# API GraphQL introduction

## Queries and Mutations

**Queries** are used to fetch data. They are typically considered to not change values on the server-side and can be run in parallel.

**Mutations** are used to change objects on the server-side and are intended to be run one at a time for a given resource.

## Access to the API

The API can be accessed
1. through the [Developer Playground](https://admin.wifi.unwired.at/developer/playground) UI
1. programmatically via [https://api.wifi.unwired.at/](https://api.wifi.unwired.at/)

## GraphQL background

- GraphQL introduction: [https://graphql.org/learn/](https://graphql.org/learn/)