Implement GraphQL API

Implement comprehensive GraphQL API with modern best practices: $ARGUMENTS

Current Application Context

• Framework: @package.json or @requirements.txt (detect Apollo, GraphQL Yoga, etc.)
• Existing API: !find . -name "*.graphql" -o -name "*schema*" -o -name "*resolver*" | wc -l
• Database integration: @prisma/schema.prisma or database connection configs
• Authentication: !grep -r "auth\|jwt\|context" src/ 2>/dev/null | wc -l

Task

Build production-ready GraphQL API with comprehensive functionality and performance optimization:

Schema Approach: Use $ARGUMENTS to specify schema-first, code-first, or federation architecture

GraphQL Implementation:

1. Schema Design - Type definitions, queries, mutations, subscriptions, custom scalars
2. Resolver Architecture - Data fetching, authentication, authorization, error handling
3. DataLoader Integration - N+1 query prevention, batch loading, caching strategies
4. Real-time Features - WebSocket subscriptions, live data updates, connection management
5. Security & Performance - Query complexity analysis, depth limiting, rate limiting
6. Development Tools - GraphQL Playground, introspection, schema stitching

Advanced Features: File uploads, federated schemas, Apollo Federation, schema directives, and monitoring.

Production Readiness: Implement comprehensive error handling, logging, metrics, and deployment strategies.

Output: Complete GraphQL API with optimized resolvers, real-time capabilities, security controls, and developer documentation.