https://spec.graphql.org/October2021/#sec-Introspection



{
	__schema
	 {
		description
		types
		{
			name
 		}
	}
}

//

fragment inputValueFields on __InputValue
{

	name,
	description,
	type
	{
		...typeFields
	},
	defaultValue

}

fragment fieldFields on __Field {
	name,
	description,
	args
	{
		...inputValueFields
	},
	type
	{
		...typeFields
	},
	isDeprecated,
	deprecationReason: String
}

fragment typeFields on __Type {
	name,
	description,
	fields
	{
		...fieldFields
	},
	interfaces
	{
		...typeFields
	},
	possibleTypes
	{
		...typeFields
	},
	enumValues
	{
		...typeFields
	},
	inputFields
	{
		...inputValueFields
	},
	ofType
	{
		...typeFields
	},
	specifiedByURL
}

fragment directiveFields on __Directive {
	name,
	description,
	locations,
	args:
	{
		...inputValueFields
	},
	isRepeatable
}

{
	__schema
	 {
		description
		types
		{
			...typeFields
 		},
 		queryType
 		{
			...typeFields
 		},
		mutationType
		{
			...typeFields
 		},
		subscriptionType
		{
			...typeFields
 		},
		directives
		{
			...inputValueFields
		}
	}
}


//

{
	"data": null,
	"errors":
	[
		{
			"message": "  --> 64:2\n   |\n64 | \t{\n   | \t^---\n   |\n   = expected name",
			"locations":
			[
				{
					"line": 64,
					"column": 2
				}
			]
		}
	]
}

{
	"data": null,
	"errors":
	[
		{
			"message": "The recursion depth of the query cannot be greater than `32`",
			"locations":
			[
				{
					"line": 29,
					"column": 31
				}
			]
		}
	]
}

	{
 		value,
		description
	},




https://spec.graphql.org/October2021/#sec-Schema-Introspection.Schema-Introspection-Schema




https://graphql.org/learn/introspection/



{
  __schema {
    types {
      name
    }
  }
}


{
	"data":
	{
		"__schema":
		{
			"types":
			[
				{
					"name": "BoolValue"
				},
				{
					"name": "Boolean"
				},
				{
					"name": "Char"
				},
				{
					"name": "CharValue"
				},
				{
					"name": "F32Value"
				},
				{
					"name": "F64Value"
				},
				{
					"name": "Float"
				},
				{
					"name": "I128Scalar"
				},
				{
					"name": "I128ScalarValue"
				},
				{
					"name": "I16Value"
				},
				{
					"name": "I32Value"
				},
				{
					"name": "I64Value"
				},
				{
					"name": "I8Value"
				},
				{
					"name": "ID"
				},
				{
					"name": "InputWhatever"
				},
				{
					"name": "Int"
				},
				{
					"name": "IsizeValue"
				},
				{
					"name": "MutationRoot"
				},
				{
					"name": "QueryRoot"
				},
				{
					"name": "String"
				},
				{
					"name": "StringValue"
				},
				{
					"name": "U128Scalar"
				},
				{
					"name": "U128ScalarValue"
				},
				{
					"name": "U16Value"
				},
				{
					"name": "U32Value"
				},
				{
					"name": "U64Value"
				},
				{
					"name": "U8Value"
				},
				{
					"name": "UsizeValue"
				},
				{
					"name": "Whatever"
				},
				{
					"name": "__Directive"
				},
				{
					"name": "__DirectiveLocation"
				},
				{
					"name": "__EnumValue"
				},
				{
					"name": "__Field"
				},
				{
					"name": "__InputValue"
				},
				{
					"name": "__Schema"
				},
				{
					"name": "__Type"
				},
				{
					"name": "__TypeKind"
				}
			]
		}
	}
}


{
  __schema {
    queryType {
      name
    }
  }
}


{
	"data":
	{
		"__schema":
		{
			"queryType":
			{
				"name": "QueryRoot"
			}
		}
	}
}




{
  __type(name: "BoolValue") {
    name
    kind
  }
}


{
	"data":
	{
		"__type":
		{
			"name": "BoolValue",
			"kind": "OBJECT"
		}
	}
}



{
  __type(name: "Boolean") {
    name
    kind
  }
}

{
	"data":
	{
		"__type":
		{
			"name": "Boolean",
			"kind": "SCALAR"
		}
	}
}




{
  __type(name: "Boolean") {
 	name
 	kind
  	description
	specifiedByURL
  }
}

{
	"data":
	{
		"__type":
		{
			"name": "Boolean",
			"kind": "SCALAR",
			"description": "The `Boolean` scalar type represents `true` or `false`.",
			"specifiedByURL": null
		}
	}
}


{
  __type(name: "BoolValue") {
 	name
 	kind
  	description
	specifiedByURL
  }
}


{
	"data":
	{
		"__type":
		{
			"name": "BoolValue",
			"kind": "OBJECT",
			"description": null,
			"specifiedByURL": null
		}
	}
}


{
    __TypeKind
}

{
	"data": null,
	"errors":
	[
		{
			"message": "Unknown field \"__TypeKind\" on type \"QueryRoot\".",
			"locations":
			[
				{
					"line": 2,
					"column": 5
				}
			]
		}
	]
}


{
  __type(name: "__TypeKind") {
 	name
 	kind
  	description
	specifiedByURL
  }
}

{
	"data":
	{
		"__type":
		{
			"name": "__TypeKind",
			"kind": "ENUM",
			"description": "An enum describing what kind of type a given `__Type` is.",
			"specifiedByURL": null
		}
	}
}

//

{
	__schema
	{
		description,
		types
		{
			name
		},
		queryType
		{
			name
		},
		mutationType
		{
			name
		},
		subscriptionType
		{
			name
		},
		directives
		{
			name
		}
	}
}

query GetType($name: String)
{
	__type(name: $name)
	{
		name
		kind
		description
		specifiedByURL
	}
}

{
	"name": "String"
}

Invalid

Unexpected Whitespece encuntered



Invalid request: data did not match any variant of untagged enum BatchRequest

Invalid

Unexpected Whitespece encuntered


query GetType($name: String)
{
	__type(name: $name)
	{
		name
		kind
		description
		specifiedByURL
	}
}

{
	"name": "String"
}

Invalid request: data did not match any variant of untagged enum BatchRequest

Invalid

Unexpected Whitespece encuntered

{
	__type(name: "String")
	{
		name
		kind
		description
		specifiedByURL
	}
}

{
	"data":
	{
		"__type":
		{
			"name": "String",
			"kind": "SCALAR",
			"description": "The `String` scalar type represents textual data, represented as UTF-8\ncharacter sequences. The String type is most often used by GraphQL to\nrepresent free-form human-readable text.",
			"specifiedByURL": null
		}
	}
}

{
	__type(name: "Whatever")
	{
		name
		kind
		description
		specifiedByURL
	}
}

{
	"data":
	{
		"__type":
		{
			"name": "Whatever",
			"kind": "UNION",
			"description": null,
			"specifiedByURL": null
		}
	}
}




query GetType($name: String = "Whatever")
{
	__type(name: $name)
	{
		name
		kind
		description
		specifiedByURL
	}
}

{
	"data":
	{
		"__type":
		{
			"name": "Whatever",
			"kind": "UNION",
			"description": null,
			"specifiedByURL": null
		}
	}
}

//

{
	__schema
	{

		types
		{
			name
		},
		queryType
		{
			name
		},
		mutationType
		{
			name
		},
		subscriptionType
		{
			name
		},
		directives
		{
			name
		}
	}
}

{
	"data":
	{
		"__schema":
		{
			"types":
			[
				{
					"name": "BoolValue"
				},
				{
					"name": "Boolean"
				},
				{
					"name": "Char"
				},
				{
					"name": "CharValue"
				},
				{
					"name": "F32Value"
				},
				{
					"name": "F64Value"
				},
				{
					"name": "Float"
				},
				{
					"name": "I128Scalar"
				},
				{
					"name": "I128ScalarValue"
				},
				{
					"name": "I16Value"
				},
				{
					"name": "I32Value"
				},
				{
					"name": "I64Value"
				},
				{
					"name": "I8Value"
				},
				{
					"name": "ID"
				},
				{
					"name": "InputWhatever"
				},
				{
					"name": "Int"
				},
				{
					"name": "IsizeValue"
				},
				{
					"name": "MutationRoot"
				},
				{
					"name": "QueryRoot"
				},
				{
					"name": "String"
				},
				{
					"name": "StringValue"
				},
				{
					"name": "U128Scalar"
				},
				{
					"name": "U128ScalarValue"
				},
				{
					"name": "U16Value"
				},
				{
					"name": "U32Value"
				},
				{
					"name": "U64Value"
				},
				{
					"name": "U8Value"
				},
				{
					"name": "UsizeValue"
				},
				{
					"name": "Whatever"
				},
				{
					"name": "__Directive"
				},
				{
					"name": "__DirectiveLocation"
				},
				{
					"name": "__EnumValue"
				},
				{
					"name": "__Field"
				},
				{
					"name": "__InputValue"
				},
				{
					"name": "__Schema"
				},
				{
					"name": "__Type"
				},
				{
					"name": "__TypeKind"
				}
			],
			"queryType":
			{
				"name": "QueryRoot"
			}
		},
		"mutationType":
		{
			"name": "MutationRoot"
		}
	},
	"subscriptionType": null,
	"directives":
	[
		{
			"name": "include"
		},
		{
			"name": "skip"
		}
	]
}

//

{
	__schema
	{
	
		types
		{
			name
		},

	}
}

{
	"data":
	{
		"__schema":
		{
			"types":
			[
				{
					"name": "BoolValue"
				},
				{
					"name": "Boolean"
				},
				{
					"name": "Char"
				},
				{
					"name": "CharValue"
				},
				{
					"name": "F32Value"
				},
				{
					"name": "F64Value"
				},
				{
					"name": "Float"
				},
				{
					"name": "I128Scalar"
				},
				{
					"name": "I128ScalarValue"
				},
				{
					"name": "I16Value"
				},
				{
					"name": "I32Value"
				},
				{
					"name": "I64Value"
				},
				{
					"name": "I8Value"
				},
				{
					"name": "ID"
				},
				{
					"name": "InputWhatever"
				},
				{
					"name": "Int"
				},
				{
					"name": "IsizeValue"
				},
				{
					"name": "MutationRoot"
				},
				{
					"name": "QueryRoot"
				},
				{
					"name": "String"
				},
				{
					"name": "StringValue"
				},
				{
					"name": "U128Scalar"
				},
				{
					"name": "U128ScalarValue"
				},
				{
					"name": "U16Value"
				},
				{
					"name": "U32Value"
				},
				{
					"name": "U64Value"
				},
				{
					"name": "U8Value"
				},
				{
					"name": "UsizeValue"
				},
				{
					"name": "Whatever"
				},
				{
					"name": "__Directive"
				},
				{
					"name": "__DirectiveLocation"
				},
				{
					"name": "__EnumValue"
				},
				{
					"name": "__Field"
				},
				{
					"name": "__InputValue"
				},
				{
					"name": "__Schema"
				},
				{
					"name": "__Type"
				},
				{
					"name": "__TypeKind"
				}
			]
		}
	}
}

//

{
	__schema
	{
		queryType
		{
			name
		}
	}
}

{
	"data":
	{
		"__schema":
		{
			"queryType":
			{
				"name": "QueryRoot"
			}
		}
	}
}

//

{
	"data":
	{
		"__schema":
		{
			"queryType":
			{
				"name": "QueryRoot"
			}
		}
	}
}

{
	"data":
	{
		"__schema":
		{
			"queryType":
			{
				"name": "QueryRoot"
			}
		}
	}
}

//

{
	__schema
	{
		mutationType
		{
			name
		}
	}
}

{
	"data":
	{
		"__schema":
		{
			"mutationType":
			{
				"name": "MutationRoot"
			}
		}
	}
}

//

{
	__schema
	{
		subscriptionType
		{
			name
		}
	}
}

{
	"data":
	{
		"__schema":
		{
			"subscriptionType": null
		}
	}
}

//

{
	__schema
	{
		directives
		{
			name
		}
	}
}
		
{
	"data":
	{
		"__schema":
		{
			"directives":
			[
				{
					"name": "include"
				},
				{
					"name": "skip"
				}
			]
		}
	}
}

//

{
	__schema
	{
		description,
		directives
		{
			name
		}
	}
}

{
	"data": null,
	"errors":
	[
		{
			"message": "Unknown field \"description\" on type \"__Schema\". Did you mean \"subscriptionType\"?",
			"locations":
			[
				{
					"line": 4,
					"column": 3
				}
			]
		}
	]
}

//

{
	__schema
	{
		description
	}
}

{
	"data": null,
	"errors":
	[
		{
			"message": "Unknown field \"description\" on type \"__Schema\". Did you mean \"subscriptionType\"?",
			"locations":
			[
				{
					"line": 4,
					"column": 3
				}
			]
		}
	]
}

//

{
	__schema
	{
		queryType
		{
			name
		},
		mutationType
		{
			name
		},
		subscriptionType
		{
			name
		},
		directives
		{
			name
		},
		types
		{
			name
		},
	}
}

{
	"data":
	{
		"__schema":
		{
			"queryType":
			{
				"name": "QueryRoot"
			}
		},
		"mutationType":
		{
			"name": "MutationRoot"
		}
	},
	"subscriptionType": null,
	"directives":
	[
		{
			"name": "include"
		},
		{
			"name": "skip"
		}
	],
	"types":
	[
		{
			"name": "BoolValue"
		},
		{
			"name": "Boolean"
		},
		{
			"name": "Char"
		},
		{
			"name": "CharValue"
		},
		{
			"name": "F32Value"
		},
		{
			"name": "F64Value"
		},
		{
			"name": "Float"
		},
		{
			"name": "I128Scalar"
		},
		{
			"name": "I128ScalarValue"
		},
		{
			"name": "I16Value"
		},
		{
			"name": "I32Value"
		},
		{
			"name": "I64Value"
		},
		{
			"name": "I8Value"
		},
		{
			"name": "ID"
		},
		{
			"name": "InputWhatever"
		},
		{
			"name": "Int"
		},
		{
			"name": "IsizeValue"
		},
		{
			"name": "MutationRoot"
		},
		{
			"name": "QueryRoot"
		},
		{
			"name": "String"
		},
		{
			"name": "StringValue"
		},
		{
			"name": "U128Scalar"
		},
		{
			"name": "U128ScalarValue"
		},
		{
			"name": "U16Value"
		},
		{
			"name": "U32Value"
		},
		{
			"name": "U64Value"
		},
		{
			"name": "U8Value"
		},
		{
			"name": "UsizeValue"
		},
		{
			"name": "Whatever"
		},
		{
			"name": "__Directive"
		},
		{
			"name": "__DirectiveLocation"
		},
		{
			"name": "__EnumValue"
		},
		{
			"name": "__Field"
		},
		{
			"name": "__InputValue"
		},
		{
			"name": "__Schema"
		},
		{
			"name": "__Type"
		},
		{
			"name": "__TypeKind"
		}
	]
}

//

{
	__schema
	{
		name,
		queryType
		{
			name
		},
		mutationType
		{
			name
		},
		subscriptionType
		{
			name
		},
		directives
		{
			name
		},
		types
		{
			name
		},
	}
}

{
	"data": null,
	"errors":
	[
		{
			"message": "Unknown field \"name\" on type \"__Schema\".",
			"locations":
			[
				{
					"line": 4,
					"column": 3
				}
			]
		}
	]
}

//

{
	__schema
	{
		types
		{
			name,
			kind
		},
		queryType
		{
			name
		},
		mutationType
		{
			name
		},
		subscriptionType
		{
			name
		},
		directives
		{
			name
		}
	}
}

{
	"data":
	{
		"__schema":
		{
			"types":
			[
				{
					"name": "BoolValue",
					"kind": "OBJECT"
				},
				{
					"name": "Boolean",
					"kind": "SCALAR"
				},
				{
					"name": "Char",
					"kind": "SCALAR"
				},
				{
					"name": "CharValue",
					"kind": "OBJECT"
				},
				{
					"name": "F32Value",
					"kind": "OBJECT"
				},
				{
					"name": "F64Value",
					"kind": "OBJECT"
				},
				{
					"name": "Float",
					"kind": "SCALAR"
				},
				{
					"name": "I128Scalar",
					"kind": "SCALAR"
				},
				{
					"name": "I128ScalarValue",
					"kind": "OBJECT"
				},
				{
					"name": "I16Value",
					"kind": "OBJECT"
				},
				{
					"name": "I32Value",
					"kind": "OBJECT"
				},
				{
					"name": "I64Value",
					"kind": "OBJECT"
				},
				{
					"name": "I8Value",
					"kind": "OBJECT"
				},
				{
					"name": "ID",
					"kind": "SCALAR"
				},
				{
					"name": "InputWhatever",
					"kind": "INPUT_OBJECT"
				},
				{
					"name": "Int",
					"kind": "SCALAR"
				},
				{
					"name": "IsizeValue",
					"kind": "OBJECT"
				},
				{
					"name": "MutationRoot",
					"kind": "OBJECT"
				},
				{
					"name": "QueryRoot",
					"kind": "OBJECT"
				},
				{
					"name": "String",
					"kind": "SCALAR"
				},
				{
					"name": "StringValue",
					"kind": "OBJECT"
				},
				{
					"name": "U128Scalar",
					"kind": "SCALAR"
				},
				{
					"name": "U128ScalarValue",
					"kind": "OBJECT"
				},
				{
					"name": "U16Value",
					"kind": "OBJECT"
				},
				{
					"name": "U32Value",
					"kind": "OBJECT"
				},
				{
					"name": "U64Value",
					"kind": "OBJECT"
				},
				{
					"name": "U8Value",
					"kind": "OBJECT"
				},
				{
					"name": "UsizeValue",
					"kind": "OBJECT"
				},
				{
					"name": "Whatever",
					"kind": "UNION"
				},
				{
					"name": "__Directive",
					"kind": "OBJECT"
				},
				{
					"name": "__DirectiveLocation",
					"kind": "ENUM"
				},
				{
					"name": "__EnumValue",
					"kind": "OBJECT"
				},
				{
					"name": "__Field",
					"kind": "OBJECT"
				},
				{
					"name": "__InputValue",
					"kind": "OBJECT"
				},
				{
					"name": "__Schema",
					"kind": "OBJECT"
				},
				{
					"name": "__Type",
					"kind": "OBJECT"
				},
				{
					"name": "__TypeKind",
					"kind": "ENUM"
				}
			],
			"queryType":
			{
				"name": "QueryRoot"
			}
		},
		"mutationType":
		{
			"name": "MutationRoot"
		}
	},
	"subscriptionType": null,
	"directives":
	[
		{
			"name": "include"
		},
		{
			"name": "skip"
		}
	]
}

//

With an exposed Hashmap in a query object a JSONObject appears!

{
	"data":
	{
		"__schema":
		{
			"types":
			[
				{
					"name": "BoolValue",
					"kind": "OBJECT"
				},
				{
					"name": "Boolean",
					"kind": "SCALAR"
				},
				{
					"name": "Char",
					"kind": "SCALAR"
				},
				{
					"name": "CharValue",
					"kind": "OBJECT"
				},
				{
					"name": "F32Value",
					"kind": "OBJECT"
				},
				{
					"name": "F64Value",
					"kind": "OBJECT"
				},
				{
					"name": "Float",
					"kind": "SCALAR"
				},
				{
					"name": "I128Scalar",
					"kind": "SCALAR"
				},
				{
					"name": "I128ScalarValue",
					"kind": "OBJECT"
				},
				{
					"name": "I16Value",
					"kind": "OBJECT"
				},
				{
					"name": "I32Value",
					"kind": "OBJECT"
				},
				{
					"name": "I64Value",
					"kind": "OBJECT"
				},
				{
					"name": "I8Value",
					"kind": "OBJECT"
				},
				{
					"name": "ID",
					"kind": "SCALAR"
				},
				{
					"name": "InputWhatever",
					"kind": "INPUT_OBJECT"
				},
				{
					"name": "Int",
					"kind": "SCALAR"
				},
				{
					"name": "IsizeValue",
					"kind": "OBJECT"
				},
				{
					"name": "JSONObject",
					"kind": "SCALAR"
				},
				{
					"name": "MutationRoot",
					"kind": "OBJECT"
				},
				{
					"name": "QueryRoot",
					"kind": "OBJECT"
				},
				{
					"name": "String",
					"kind": "SCALAR"
				},
				{
					"name": "StringValue",
					"kind": "OBJECT"
				},
				{
					"name": "U128Scalar",
					"kind": "SCALAR"
				},
				{
					"name": "U128ScalarValue",
					"kind": "OBJECT"
				},
				{
					"name": "U16Value",
					"kind": "OBJECT"
				},
				{
					"name": "U32Value",
					"kind": "OBJECT"
				},
				{
					"name": "U64Value",
					"kind": "OBJECT"
				},
				{
					"name": "U8Value",
					"kind": "OBJECT"
				},
				{
					"name": "UsizeValue",
					"kind": "OBJECT"
				},
				{
					"name": "Whatever",
					"kind": "UNION"
				},
				{
					"name": "__Directive",
					"kind": "OBJECT"
				},
				{
					"name": "__DirectiveLocation",
					"kind": "ENUM"
				},
				{
					"name": "__EnumValue",
					"kind": "OBJECT"
				},
				{
					"name": "__Field",
					"kind": "OBJECT"
				},
				{
					"name": "__InputValue",
					"kind": "OBJECT"
				},
				{
					"name": "__Schema",
					"kind": "OBJECT"
				},
				{
					"name": "__Type",
					"kind": "OBJECT"
				},
				{
					"name": "__TypeKind",
					"kind": "ENUM"
				}
			],
			"queryType":
			{
				"name": "QueryRoot"
			}
		},
		"mutationType":
		{
			"name": "MutationRoot"
		}
	},
	"subscriptionType": null,
	"directives":
	[
		{
			"name": "include"
		},
		{
			"name": "skip"
		}
	]
}

//

General type information:

query GetType($name: String)
{
	__type(name: $name)
	{
		name
		kind
		description
	}
}

{
	"name": "String"
}

{
	"data":
	{
		"__type":
		{
			"name": "String",
			"kind": "SCALAR",
			"description": "The `String` scalar type represents textual data, represented as UTF-8\ncharacter sequences. The String type is most often used by GraphQL to\nrepresent free-form human-readable text."
		}
	}
}

{
	"name": "BoolValue"
}

{
	"data":
	{
		"__type":
		{
			"name": "BoolValue",
			"kind": "OBJECT",
			"description": null
		}
	}
}

{
	"name": "Whatever"
}

{
	"data":
	{
		"__type":
		{
			"name": "Whatever",
			"kind": "UNION",
			"description": null
		}
	}
}

{
	"name": "CharValue"
}

{
	"data":
	{
		"__type":
		{
			"name": "CharValue",
			"kind": "OBJECT",
			"description": null
		}
	}
}

{
	"name": "Int"
}

{
	"data":
	{
		"__type":
		{
			"name": "Int",
			"kind": "SCALAR",
			"description": "The `Int` scalar type represents non-fractional whole numeric values."
		}
	}
}

{
	"name": "ID"
}

{
	"data":
	{
		"__type":
		{
			"name": "ID",
			"kind": "SCALAR",
			"description": null
		}
	}
}

//

Intrinsics:

Input:

Int - Scalar
Float - Scalar
String - Scalar
Boolean - Scalar
Null - Scalar

Output:

ID - Scalar

Plus anything prepended with __

Then:

Enum - Enum
List - List
Object - Object

General query:

query GetType($name: String)
{
	__type(name: $name)
	{
		kind
		name
		description
	}
}



OBJECT type kind:

query GetObjectType($name: String, $includeDeprecated: Boolean = false)
{

	__type(name: $name)
	{
		description,
		fields(includeDeprecated: $includeDeprecated)
		{
			name
			description
			args
			{
				name
				description
				type
				{
					kind
					name
				}
				defaultValue
			
			}
			type
			{
				kind
				name
			}
			isDeprecated
			deprecationReason
		}	
	}
}

//

{
	"name": "BoolValue"
}

{
	"data":
	{
		"__type":
		{
			"description": null,
			"fields":
			[
				{
					"name": "value",
					"description": null,
					"args":
					[
					],
					"type":
					{
						"kind": "NON_NULL",
						"name": null
					},
					"isDeprecated": false,
					"deprecationReason": null
				}
			]
		}
	}
}

//

OBJECT type kind (no fields):

query GetObjectType($name: String, $includeDeprecated: Boolean = false)
{
	__type(name: $name)
	{
		description	
	}
}

//

INTERFACE type kind:

query GetInterfaceType($name: String, $includeDeprecated: Boolean = false)
{
	__type(name: $name)
	{
		description,
		fields(includeDeprecated: $includeDeprecated)
		{
			name
			description
			args
			{
				name
				description
				type
				{
					kind
					name
				}
				defaultValue
			
			}
			type
			{
				kind
				name
			}
			isDeprecated
			deprecationReason
		}
		interfaces
		{
			kind
			name
		}
		possibleTypes
		{
			kind
			name
		}
	}
}

UNION type kind:

query GetUnionType($name: String)
{
	__type(name: $name)
	{
		description
		possibleTypes
		{
			kind
			name
		}
	}	
}

//

{
	"name": "Whatever"
}

{
	"data":
	{
		"__type":
		{
			"description": null,
			"possibleTypes":
			[
				{
					"kind": "OBJECT",
					"name": "BoolValue"
				},
				{
					"kind": "OBJECT",
					"name": "CharValue"
				},
				{
					"kind": "OBJECT",
					"name": "F32Value"
				},
				{
					"kind": "OBJECT",
					"name": "F64Value"
				},
				{
					"kind": "OBJECT",
					"name": "I8Value"
				},
				{
					"kind": "OBJECT",
					"name": "I16Value"
				},
				{
					"kind": "OBJECT",
					"name": "I32Value"
				},
				{
					"kind": "OBJECT",
					"name": "I64Value"
				},
				{
					"kind": "OBJECT",
					"name": "I128ScalarValue"
				},
				{
					"kind": "OBJECT",
					"name": "IsizeValue"
				},
				{
					"kind": "OBJECT",
					"name": "U8Value"
				},
				{
					"kind": "OBJECT",
					"name": "U16Value"
				},
				{
					"kind": "OBJECT",
					"name": "U32Value"
				},
				{
					"kind": "OBJECT",
					"name": "U64Value"
				},
				{
					"kind": "OBJECT",
					"name": "U128ScalarValue"
				},
				{
					"kind": "OBJECT",
					"name": "UsizeValue"
				},
				{
					"kind": "OBJECT",
					"name": "StringValue"
				}
			]
		}
	}
}

//

ENUM type kind:

query GetEnumType($name: String, $includeDeprecated: Boolean = false)
{
	__type(name: $name)
	{
		description
		enumValues(includeDeprecated: $includeDeprecated)
		{
			name
  			description
  			isDeprecated
  			deprecationReason
		}
	}	
}

//

{
	"name": "__DirectiveLocation"
}

{
	"data":
	{
		"__type":
		{
			"description": "A Directive can be adjacent to many parts of the GraphQL language, a\n__DirectiveLocation describes one such possible adjacencies.",
			"enumValues":
			[
				{
					"name": "QUERY",
					"description": "Location adjacent to a query operation.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "MUTATION",
					"description": "Location adjacent to a mutation operation.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "SUBSCRIPTION",
					"description": "Location adjacent to a subscription operation.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "FIELD",
					"description": "Location adjacent to a field.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "FRAGMENT_DEFINITION",
					"description": "Location adjacent to a fragment definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "FRAGMENT_SPREAD",
					"description": "Location adjacent to a fragment spread.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "INLINE_FRAGMENT",
					"description": "Location adjacent to an inline fragment.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "VARIABLE_DEFINITION",
					"description": "Location adjacent to a variable definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "SCHEMA",
					"description": "Location adjacent to a schema definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "SCALAR",
					"description": "Location adjacent to a scalar definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "OBJECT",
					"description": "Location adjacent to an object type definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "FIELD_DEFINITION",
					"description": "Location adjacent to a field definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "ARGUMENT_DEFINITION",
					"description": "Location adjacent to an argument definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "INTERFACE",
					"description": "Location adjacent to an interface definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "UNION",
					"description": "Location adjacent to a union definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "ENUM",
					"description": "Location adjacent to an enum definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "ENUM_VALUE",
					"description": "Location adjacent to an enum value definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "INPUT_OBJECT",
					"description": "Location adjacent to an input object type definition.",
					"isDeprecated": false,
					"deprecationReason": null
				},
				{
					"name": "INPUT_FIELD_DEFINITION",
					"description": "Location adjacent to an input object field definition.",
					"isDeprecated": false,
					"deprecationReason": null
				}
			]
		}
	}
}

//

INPUT_OBJECT type kind:

query GetInputObjectType($name: String)
{
	__type(name: $name)
	{
		description
		inputFields
		{
			name
  			description
  			type
  			{
				kind
				name
			}
  			defaultValue
		}
	}	
}

//

{
	"name": "InputWhatever"
}

Error:

{"data":{"__type":{"description":null,"inputFields":[{"name":"bool","description":null,"type":{"kind":"SCALAR","name":"Boolean"},"defaultValue":null},{"name":"char","description":null,"type":{"kind":"SCALAR","name":"Char"},"defaultValue":null},{"name":"f32","description":null,"type":{"kind":"SCALAR","name":"Float"},"defaultValue":null},{"name":"f64","description":null,"type":{"kind":"SCALAR","name":"Float"},"defaultValue":null},{"name":"i8","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"i16","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"i32","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"i64","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"i128","description":null,"type":{"kind":"SCALAR","name":"I128Scalar"},"defaultValue":null},{"name":"isize","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"u8","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"u16","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"u32","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"u64","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"u128","description":null,"type":{"kind":"SCALAR","name":"U128Scalar"},"defaultValue":null},{"name":"usize","description":null,"type":{"kind":"SCALAR","name":"Int"},"defaultValue":null},{"name":"string","description":null,"type":{"kind":"SCALAR","name":"String"},"defaultValue":null}]}}}

{
	"data":
	{
		"__type":
		{
			"description": null,
			"inputFields":
			[
				{
					"name": "bool",
					"description": null,
					"type":
					{
						"kind": "SCALAR",
						"name": "Boolean"
					}
				},
				"defaultValue"

Error: Expected comma or closing curly or sqare bracket

Premature object closing error fixed:

{
        "data":
        {
                "__type":
                {
                        "description": null,
                        "inputFields":
                        [
                                {
                                        "name": "bool",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Boolean"
                                        },
                                        "defaultValue": null,
                                        "name": "char",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Char"
                                        },
                                        "defaultValue": null,
                                        "name": "f32",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Float"
                                        },
                                        "defaultValue": null,
                                        "name": "f64",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Float"
                                        },
                                        "defaultValue": null,
                                        "name": "i8",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "i16",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "i32",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "i64",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "i128",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "I128Scalar"
                                        },
                                        "defaultValue": null,
                                        "name": "isize",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "u8",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "u16",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "u32",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "u64",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "u128",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "U128Scalar"
                                        },
                                        "defaultValue": null,
                                        "name": "usize",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null,
                                        "name": "string",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "String"
                                        },
                                        "defaultValue": null
                                }                               }

Error: Unexpected char encountered

//

Works Now!

{
        "data":
        {
                "__type":
                {
                        "description": null,
                        "inputFields":
                        [
                                {
                                        "name": "bool",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Boolean"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "char",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Char"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "f32",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Float"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "f64",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Float"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "i8",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "i16",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "i32",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "i64",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "i128",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "I128Scalar"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "isize",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "u8",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "u16",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "u32",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "u64",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "u128",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "U128Scalar"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "usize",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "Int"
                                        },
                                        "defaultValue": null
                                },
                                {
                                        "name": "string",
                                        "description": null,
                                        "type":
                                        {
                                                "kind": "SCALAR",
                                                "name": "String"
                                        },
                                        "defaultValue": null
                                }
                        ]
                }
        }
}

//

NON_NULL and LIST type kinds:

query NonNullOrList($name: String)
{
	__type(name: $name)
	{
		description
		ofType
		{
			kind
			name
		}
	}	
}

custom SCALAR type kinds:

query CustomScalar($name: String)
{
	__type(name: $name)
	{
		description
		specifiedByURL
	}
}