# GraphiQL

> **Security Notice:** All versions of `graphiql` < `1.4.3` are vulnerable to an XSS attack in cases where the GraphQL server to which the GraphiQL web app connects is not trusted. Learn more in [our security advisory](https://github.com/graphql/graphiql/tree/main/docs/security/2021-introspection-schema-xss.md).

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_/ˈɡrafək(ə)l/_ A graphical interactive in-browser GraphQL IDE. [Try the live demo](http://graphql.org/swapi-graphql).

[![](resources/graphiql.png)](http://graphql.org/swapi-graphql)

## Features

- Full language support of the latest [GraphQL Specification](https://spec.graphql.org/draft/#sec-Language):
- Syntax highlighting
- Intelligent type ahead of fields, arguments, types, and more
- Real-time error highlighting and reporting for queries and variables
- Automatic query and variables completion
- Automatic leaf node insertion for non-scalar fields
- Documentation explorer with search and markdown support
- Persisted state using `localStorage`
- Simple API for adding custom plugins

## Live Demos

- The [latest stable version](http://graphql.org/swapi-graphql)
- The current state of the `master` branch:
  - Using the [minified bundles](https://graphiql-test.netlify.com/)
  - Using the [development bundles](https://graphiql-test.netlify.com/dev) (good for inspecting, debugging, etc)
- Each pull request will also get its own preview deployment on Netlify, you'll find a link in the GitHub checks

## Examples

- [`Unpkg (CDN)`](../../examples/graphiql-cdn) - A single HTML file using CDN assets and a script tag
- [`Webpack`](../../examples/graphiql-webpack) - A starter for Webpack
- [`Create React App`](../../examples/graphiql-create-react-app) - An example using [Create React App](https://create-react-app.dev/)
- [`Parcel`](../../examples/graphiql-parcel) - An example using [Parcel](https://parceljs.org/)

## Getting started

> If you're looking to upgrade from `graphiql@1.x` to `graphiql@2`, check out the [migration guide](../../docs/migration/graphiql-2.0.0.md)!

### UMD

With `unpkg`/`jsdelivr`, etc.:

```html
<link href="https://unpkg.com/graphiql/graphiql.min.css" rel="stylesheet" />
<script crossorigin src="https://unpkg.com/graphiql/graphiql.min.js"></script>
```

(see: Usage UMD Bundle below for more required script tags)

## Usage

### Using as package

The `graphiql` package can be installed using your favorite package manager. You also need to have `react`,`react-dom` and `graphql` installed which are peer dependencies of `graphiql`.

```sh
npm install --save graphiql react react-dom graphql
```

The package exports a bunch of React components:

- The `GraphiQLProvider` components renders multiple context providers that encapsulate all state management
- The `GraphiQLInterface` component renders the UI that makes up GraphiQL
- The `GraphiQL` component is a combination of both the above components

There is a single prop that is required for the `GraphiQL` component called fetcher. A fetcher is a function that performs a request to a GraphQL API. It may return a `Promise` for queries or mutations, but also an `Observable` or an `AsyncIterable` in order to handle subscriptions or multipart responses.

An easy way to get create such a function is the [`createGraphiQLFetcher`](../graphiql-toolkit/src/create-fetcher/createFetcher.ts) method exported from the `@graphiql/toolkit` package. If you want to implement your own fetcher function you can use the `Fetcher` type from `@graphiql/toolkit` to make sure the signature matches what GraphiQL expects.

The following is everything you need to render GraphiQL in your React application:

```jsx
import { createGraphiQLFetcher } from '@graphiql/toolkit';
import { GraphiQL } from 'graphiql';
import React from 'react';
import ReactDOM from 'react-dom';

import 'graphiql/graphiql.css';

const fetcher = createGraphiQLFetcher({
  url: 'https://my.backend/graphql',
});

ReactDOM.render(<GraphiQL fetcher={fetcher} />, document.body);
```

### Using as UMD bundle over CDN (Unpkg, JSDelivr, etc)

There exist pre-bundled static assets that allow you to easily render GraphiQL just by putting together a single HTML file. Check out the `index.html` file in the [example project](../../examples/graphiql-cdn/) in this repository.

## Customize

GraphiQL supports customization in UI and behavior by accepting React props and children.

### Props

For props documentation, see the [API Docs](https://graphiql-test.netlify.app/typedoc/modules/graphiql.html#graphiqlprops-1)

### Children

Parts of the UI can be customized by passing children to the `GraphiQL` or the `GraphiQLInterface` component.

- `<GraphiQL.Logo>`: Replace the GraphiQL logo with your own.

- `<GraphiQL.Toolbar>`: Add a custom toolbar below the execution button. Pass the empty `<GraphiQL.Toolbar />` if an empty toolbar is desired. Use the components provided by `@graphiql/react` to create toolbar buttons with proper styles.

- `<GraphiQL.Footer>`: Add a custom footer shown below the response editor.

### Plugins

Starting with `graphiql@2` there exists a simple plugin API that allow you to build your own custom tools right into GraphiQL.

There are two built-in plugins that come with GraphiQL: The documentation explorer and the query history. Both can be toggled using icons in the sidebar on the left side of the screen. When opened, they appear next to the sidebar in a resizable portion of the screen.

To define your own plugin, all you need is a JavaScript object with three properties:

- `title`: A unique title for the plugin (this will show up in a tooltip when hovering over the sidebar icon)
- `icon`: A React component that renders an icon which will be included in the sidebar
- `content`: A React component that renders the plugin contents which will be shown next to the sidebar when opening the plugin

You can pass a list of plugin objects to the `GraphiQL` component using the `plugins` prop. You can also control the visibility state of plugins using the `visiblePlugin` prop and react to changes of the plugin visibility state using the `onTogglePluginVisibility` prop.

Inside the component you pass to `content` you can interact with the GraphiQL state using the hooks provided by `@graphiql/react`. As an example, check out how you can integrate the OneGraph Explorer in GraphiQL using the plugin API in the [example folder](../../examples/graphiql-explorer) in this repo.

### Theming

The GraphiQL interface uses CSS variables for theming, in particular for colors. Check out the [`root.css`](../graphiql-react/src/style/root.css) file for the available variables.

Overriding these variables is the only officially supported way of customizing the appearance of GraphiQL. Starting from version 2, class names are no longer be considered stable and might change between minor or patch version updates.

### Editor Theme

The colors inside the editor can also be altered using [CodeMirror editor themes](https://codemirror.net/demo/theme.html). You can use the `editorTheme` prop to pass in the name of the theme. The CSS for the theme has to be loaded for the theme prop to work.

```jsx
// In your document head:
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.23.0/theme/solarized.css" />

// When rendering GraphiQL:
<GraphiQL editorTheme="solarized light" />
```

You can also create your own theme in CSS. As a reference, the default `graphiql` theme definition can be found [here](../graphiql-react/src/editor/style/codemirror.css).
