Configure GraphQL client endpoint and HTTP headers
- Launch GraphiQL.
 - Click Edit HTTP Headers.
The Edit HTTP Headers window appears.

 - Click Add Header.

 - Enter 
X-AUTH-EMAILin the Header name field and your email address registered with Cloudflare in the Header value field, and click Save. - To configure authentication, click Add Header. You can use Cloudflare Analytics API token authentication (recommended) or Cloudflare API key authentication.
- Token authentication:
Enter Authorization in the Header Name field, and enter 
Bearer {your-analytics-token}in the Header value field, then click Save.
 - Key authentication:
Enter 
X-AUTH-KEYin the Header Name field, and paste your Global API Key in the Header value field, then click Save.
 
 - Token authentication:
Enter Authorization in the Header Name field, and enter 
 - Click anywhere outside the Edit HTTP Headers window in GraphiQL to close it and return to the main GraphiQL display.
 - Enter 
https://api.cloudflare.com/client/v4/graphqlin the GraphQL Endpoint field
 
Now that you have configured authentication with a Cloudflare API key, you are ready to run queries using GraphiQL.