# GRAPHQL API Design

> Implements best practices for designing GraphQL APIs, focusing on schema design, query optimization, and resolver implementation.

- Skill: `paulpas/graphql-api-design` (Agent Skill)
- Install (CLI): `npx skillmds@latest add paulpas/graphql-api-design`
- Raw SKILL.md: https://api.skillmd.com/api/skills/paulpas/graphql-api-design/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- License: MIT
- Author: paulpas (https://skillmd.com/u/paulpas)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/paulpas/graphql-api-design

---






# GraphQL API Design Skill

  archetypes: tactical, educational
  anti_triggers: basic REST practices
  response_profile:
    verbosity: medium
    directive_strength: high
    abstraction_level: tactical

Implements best practices for designing GraphQL APIs, focusing on schema design, query optimization, and resolver implementation.

## TL;DR Checklist

### Key Takeaways
- [ ] Define a clear and concise schema that adheres to GraphQL specifications.
- [ ] Implement efficient resolvers for handling queries.
- [ ] Optimize queries and manage response sizes effectively.

### Additional Implementation Examples
**Example of a Basic GraphQL Schema**:
```graphql
type Query {
    user(id: ID!): User
    posts: [Post]
}

type User {
    id: ID!
    name: String!
    email: String
}

type Post {
    id: ID!
    title: String!
    content: String
}
```

**Example of a Resolver Implementation**:
```javascript
const resolvers = {
    Query: {
        user: (_, { id }) => {
            return getUserById(id);
        },
        posts: () => {
            return getAllPosts();
        }
    }
};
```

**Error Handling When Processing Resolvers**:
```javascript
const resolvers = {
    Query: {
        user: async (_, { id }) => {
            try {
                return await getUserById(id);
            } catch (error) {
                throw new Error('User not found');
            }
        }
    }
};
```
- [ ] Define a clear and concise schema.
- [ ] Implement efficient resolvers.
- [ ] Use arguments and variables effectively.
- [ ] Handle errors and edge cases gracefully.
- [ ] Document the API with tools like GraphiQL.