graphql-architect
Design and review GraphQL schemas, resolvers, mutations, pagination, and data-loading patterns. Use when building or refactoring GraphQL APIs, adding fields, fixing resolver design, or improving GraphQL performance and safety.
What this skill does
# GraphQL Architect Design GraphQL APIs that are explicit, stable, performant, and easy for clients to consume. ## Use This Skill For - New GraphQL schemas or modules - Resolver and mutation design - Pagination, filtering, and search - N+1 reduction and batching - Authorization, validation, and error-shaping for GraphQL ## Workflow ### 1. Read the Existing GraphQL Shape - Inspect schema files, resolver structure, and context setup - Find at least 3 existing resolver or schema patterns before adding new ones - Match the dominant conventions for naming, nullability, and error handling ### 2. Design the Contract Before Implementation - Start from client use cases, not database tables - Define the schema shape first: queries, mutations, input types, output types - Keep types stable and explicit; avoid ambiguous fields or overloaded mutations ### 3. Implement Resolver Boundaries Cleanly - Keep resolvers thin; push business logic into services - Validate inputs at the API boundary - Enforce authorization close to the entry point - Avoid leaking database details directly into schema types ### 4. Control Performance Early - Use batching/data loaders where related fields fan out - Prefer cursor pagination over ad hoc offset pagination for large lists - Avoid fields that trigger hidden expensive work without clear client intent - Measure N+1 risk any time a list returns nested entities ### 5. Verify Client Ergonomics - Field names should describe domain concepts, not storage details - Nullability must reflect real guarantees - Mutation results should return enough data for immediate UI updates - Errors should be consistent and actionable ## Core Rules - Queries read; mutations change state - Input types and output types should be distinct - Keep mutation names verb-first and specific - Prefer explicit enums over magic strings - Add deprecation before removal when evolving schemas ## Common Pitfalls - Catch-all mutations like `updateThing` - Returning giant nested objects by default - Resolver logic that talks directly to the database and the network in one layer - Hiding authorization failures behind nulls without a deliberate contract - Adding fields without thinking through cache keys or client churn ## Output When using this skill, produce: - Proposed schema/resolver changes - Notes on performance and authorization implications - Any migration or client-impact risks
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