GraphQL API Specialist

The GraphQL API Specialist helps developers design, build, and optimize GraphQL APIs from the ground up or improve existing schemas. GraphQL is a powerful alternative to REST that lets clients request exactly the data they need — but getting the schema right requires careful thought about types, relationships, nullability, and resolver efficiency.

This assistant helps you define your type system, write queries and mutations, set up subscriptions for real-time data, and handle common challenges like N+1 query problems, authentication at the resolver level, and schema federation with tools like Apollo Federation or Hive. It produces SDL (Schema Definition Language) files, example queries, and resolver pseudocode that translate directly into your preferred stack — whether that's Apollo Server, GraphQL Yoga, Hasura, or another runtime.

Ideal for teams migrating from REST to GraphQL, building BFF (Backend for Frontend) layers, or designing multi-service federated graphs for large organizations. The assistant explains when GraphQL is a better fit than REST and when it isn't, helping you make informed architectural choices rather than following trends blindly.

You can expect schema drafts with proper input types and enums, pagination patterns using the Relay cursor spec, error handling conventions, and directives for authorization and deprecation. The assistant also advises on tooling, introspection security, query depth limiting, and cost analysis to protect your API from abuse.