Backend GraphQL Patterns

Purpose

Design production GraphQL schemas with resolvers, DataLoader batching, and auth.

Agent Protocol

Trigger

Exact user phrases: "GraphQL", "schema", "resolver", "query", "mutation", "subscription", "Apollo", "Relay", "GraphQL federation", "GraphQL gateway", "data loader", "N+1 GraphQL", "GraphQL authorization", "GraphQL pagination", "GQL schema design", "GraphQL error handling".

Input Context

Before activating, verify:

• Schema size (number of types, depth of nesting)
• Data sources (primary database, REST APIs, gRPC services, external APIs)
• Authentication and authorization model (RBAC, ABAC, claims-based)
• Client types consuming the API (web SPA, mobile native, third-party, internal services)

Output Artifact

GraphQL schema design with resolver patterns and DataLoader setup as formatted text.