Skip to main content
Operation decorators use the same class and field model as @Type. 
from fastql import Field, Mutation, Query, Schema, Subscription


@Query(name="Query")
class QueryRoot:
    version: str = "1.0"


@Mutation(name="Mutation")
class MutationRoot:
    @Field
    def rename_user(self, id: str, name: str) -> bool:
        return True


@Subscription(name="Subscription")
class SubscriptionRoot:
    status: str = "idle"


schema = Schema(
    query=QueryRoot,
    mutation=MutationRoot,
    subscription=SubscriptionRoot,
)
Schema(...) compiles decorated Python root classes automatically. build_schema(...) provides the equivalent functional API and accepts additional named types, a registry, and SchemaConfig.
Subscription root metadata is supported, but FastQL does not yet implement a streaming subscription transport or event execution lifecycle.