Scalars

Boolean

The Boolean scalar type represents true or false.

Float

The Float scalar type represents signed double-precision fractional values as specified by IEEE 754.

ID

The ID scalar type represents a unique identifier, often used to refetch an object or as key for a cache. The ID type appears in a JSON response as a String; however, it is not intended to be human-readable. When expected as an input type, any string (such as "4") or integer (such as 4) input value will be accepted as an ID.

JSON

Reference

References another document, used as a foreign key

String

The String scalar type represents textual data, represented as UTF-8 character sequences. The String type is most often used by GraphQL to represent free-form human-readable text.