allowed-tools: Read, Write, Edit, Bash argument-hint: [schema-approach] | --schema-first | --code-first | --federation description: Implement GraphQL API with comprehensive schema, resolvers, and real-time subscriptions

Implement GraphQL API

Implement comprehensive GraphQL API with modern best practices: $ARGUMENTS

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

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:

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