What is the graphql Introspection query?

Question

What is the graphql Introspection query.i am trying to this toll.it's work but i don't know what's the meaning of graphql Introspection query.

I am trying this tool

Answer 1

Per the spec, compliant GraphQL server implementations expose a special query that describes the schema itself. This allows for clients like Graphiql to be able to accomplish things like type-ahead and auto completion of queries.