graphql

Build a typed GraphQL API with resolvers, DataLoader, and federation.

1|Updated Dec 15, 2025
One-click install
npx skills add https://github.com/jokken79/YuKyuDATA-app1.0v --skill graphql-jokken79
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: graphql
Source: https://github.com/jokken79/YuKyuDATA-app1.0v/tree/main/.agent/skills/graphql
Command: npx skills add https://github.com/jokken79/YuKyuDATA-app1.0v --skill graphql-jokken79

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

GraphQL gives clients exactly the data they need - no more, no less. One endpoint, typed schema, introspection. But the flexibility that makes it powerful also makes it dangerous. Without proper controls, clients can craft queries that bring down your server.

Core Features & Use Cases

  • schema design
  • resolvers
  • DataLoader for N+1 prevention
  • federation for microservices
  • client integration with Apollo/urql

Quick Start

Initialize a typed schema, implement resolvers with DataLoader, and expose a single endpoint using Apollo Server.

Frequently Asked Questions about graphql

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I prevent N+1 query problems in a GraphQL API?

Prevent N+1 query problems in a GraphQL API by implementing DataLoader to batch and cache database requests within resolver execution cycles. This optimization drastically reduces redundant database fetches when resolving nested list fields.

How does federation work for GraphQL microservices?

Federation for GraphQL microservices combines multiple isolated service schemas into a single unified data graph. This exposes one typed API surface for clients while allowing individual microservices to own their resolvers and domain logic.

Can I use Apollo Client and urql with a typed GraphQL schema?

Yes, you can integrate Apollo Client and urql with a typed GraphQL schema. These client libraries consume the introspection capabilities of the single endpoint to fetch exactly the fields requested by the front-end application.

What is the best way to secure a scalable GraphQL API against malicious queries?

Secure a scalable GraphQL API by implementing proper controls against overly flexible client queries that can bring down your server. Establish a typed schema, use DataLoader optimization, and apply query depth limiting to expose a safe single endpoint.

Why does my GraphQL server return more data than the client needs?

A GraphQL server should not return more data than needed. By defining a typed schema and implementing precise resolvers, the API surface returns exactly the fields requested by the client, ensuring predictable and well-documented data responses.