# GraphQL Playground

Many playgrounds or developer tools exist to explore and test a GraphQL API.

One tool is [Hasura's GraphiQL](https://cloud.hasura.io/public/graphiql?header=content-type:application/json\&header=Authorization:Bearer%20%3Center%20your%20token%20here%3E\&endpoint=https://api.innerspace.io) , which provides Schema Introspection, allowing you to see what entities are available and easily construct queries.  All that is required is a bearer token, as described on the [authentication](https://developers.innerspace.io/authentication "mention") page.