Graphiql, the in-browser IDE for working with GraphQL APIs, available for any GraphQL endpoint.
To use, just set query parameters that specify the GraphQL endpoint and username, and password (for setting Basic Auth headers):
graphqlEndpoint -
graphqlUser -
graphqlPassword -
For example: /index.html?graphqlEndpoint=http%3A%2F%2Fgraphql.communitygraph.org%2Fgraphql%2F&graphqlUser=graphql&graphqlPassword=graphql