Quick reference for all Fusion-related attributes and their GraphQL directive equivalents. For detailed usage and examples, follow the links to the relevant guide pages.

Attribute and Directive Reference Table

Attribute	Directive	Description	Guide Page
[ObjectType<T>]	—	Maps static class as extension to entity type T	Entities and Lookups
[QueryType]	—	Marks class as contributing Query root fields	Getting Started
[MutationType]	—	Marks class as contributing Mutation root fields	Getting Started
[SubscriptionType]	—	Marks class as contributing Subscription root fields	Getting Started
[Lookup]	@lookup	Declares field as entity lookup resolver	Entities and Lookups
[NodeResolver]	—	Marks as Relay node resolver	Entities and Lookups
[Internal]	@internal	Hides lookup from composed schema	Entities and Lookups
[Shareable]	@shareable	Allows multiple subgraphs to resolve field	Entities and Lookups
[Parent(requires: "...")]	—	Declares field requirements from parent	Entities and Lookups
[Require("...")]	@require	Declares complex field requirements	Getting Started, Adding a Subgraph
[EntityKey("...")]	@key	Declares entity key for resolution	Entities and Lookups
[BindMember(nameof(...))]	—	Replaces raw FK with resolved entity	Adding a Subgraph
[Tag("...")]	@tag	Applies tag for composition filtering	Composition
[DataLoader]	—	Source-generates DataLoader interface	Getting Started, Entities and Lookups
[UsePaging]	—	Enables cursor-based pagination	Getting Started
[ID<T>]	—	Declares field as Relay-style ID	Entities and Lookups
[Inaccessible]	@inaccessible	Hides from composite schema	Composition
[Override(from: "...")]	@override	Migrates field ownership	Deployment and CI/CD
[Provides("...")]	@provides	Declares locally-resolvable subfields	Entities and Lookups
[External]	@external	Field defined by another subgraph	Entities and Lookups

See Also

• Getting Started — Introduction to Fusion attributes in practice
• Entities and Lookups — Deep dive into entity resolution
• Composition — How attributes affect schema merging
• Nitro CLI Reference — Command-line tools for composition