# Authentication Support
API Platform Admin delegates the authentication support to React Admin.
Refer to [the chapter dedicated to authentication in the React Admin documentation](https://marmelab.com/react-admin/Authentication.html)
for more information.
In short, you have to tweak the data provider and the API documentation parser like this:
```typescript
// pwa/pages/admin/index.tsx
import Head from "next/head";
import { Redirect, Route } from "react-router-dom";
import {
fetchHydra as baseFetchHydra,
hydraDataProvider as baseHydraDataProvider,
useIntrospection,
} from "@api-platform/admin";
import { parseHydraDocumentation } from "@api-platform/api-doc-parser";
import authProvider from "utils/authProvider";
import { ENTRYPOINT } from "config/entrypoint";
const getHeaders = () => localStorage.getItem("token") ? {
Authorization: `Bearer ${localStorage.getItem("token")}`,
} : {};
const fetchHydra = (url, options = {}) =>
baseFetchHydra(url, {
...options,
headers: getHeaders,
});
const RedirectToLogin = () => {
const introspect = useIntrospection();
if (localStorage.getItem("token")) {
introspect();
return <>;
}
return ;
};
const apiDocumentationParser = async () => {
try {
return await parseHydraDocumentation(ENTRYPOINT, { headers: getHeaders });
} catch (result) {
const { api, response, status } = result;
if (status !== 401 || !response) {
throw result;
}
// Prevent infinite loop if the token is expired
localStorage.removeItem("token");
return {
api,
response,
status,
customRoutes: [
],
};
}
};
const dataProvider = baseHydraDataProvider({
entrypoint: ENTRYPOINT,
httpClient: fetchHydra,
apiDocumentationParser,
});
const AdminLoader = () => {
if (typeof window !== "undefined") {
const { HydraAdmin } = require("@api-platform/admin");
return ;
}
return <>;
};
const Admin = () => (
<>
API Platform Admin
);
export default Admin;
```
For the implementation of the auth provider, you can find a working example in the [API Platform's demo application](https://github.com/api-platform/demo/blob/main/pwa/utils/authProvider.tsx).