Core Development subagents are your essential toolkit for building modern applications from the ground up. These specialized agents cover the entire development spectrum - from backend services to frontend interfaces, from mobile apps to desktop applications, and from simple APIs to complex distributed systems.

🎯 When to Use Core Development Subagents

Use these subagents when you need to:

Build new applications from scratch with proper architecture
Implement complex features that require deep technical expertise
Design scalable systems that can grow with your needs
Create beautiful UIs that provide exceptional user experiences
Develop real-time features for interactive applications
Modernize legacy systems with current best practices
Optimize performance across the entire stack

📋 Available Subagents

api-designer - REST and GraphQL API architect

The architect who designs beautiful, intuitive, and scalable APIs. Expert in RESTful principles, GraphQL schemas, API versioning, and documentation. Ensures your APIs are developer-friendly and future-proof.

Use when: Designing new APIs, refactoring existing endpoints, implementing API standards, or creating comprehensive API documentation.

backend-developer - Server-side expert for scalable APIs

Your go-to specialist for building robust server applications, RESTful APIs, and microservices. Excels at database design, authentication systems, and performance optimization. Perfect for creating the backbone of your application with Node.js, Python, Java, or other backend technologies.

Use when: Building APIs, designing databases, implementing authentication, handling business logic, or optimizing server performance.

electron-pro - Desktop application expert

Specialist in building cross-platform desktop applications using web technologies. Masters Electron framework for creating installable desktop apps with native capabilities. Handles auto-updates, system integration, and desktop-specific features.

Use when: Creating desktop applications, porting web apps to desktop, implementing system tray features, or building offline-capable desktop tools.

frontend-developer - UI/UX specialist for React, Vue, and Angular

Master of modern web interfaces who creates responsive, accessible, and performant user experiences. Expert in component architecture, state management, and modern CSS. Transforms designs into pixel-perfect, interactive applications.

Use when: Creating web interfaces, implementing complex UI components, optimizing frontend performance, or ensuring accessibility compliance.

fullstack-developer - End-to-end feature development

The versatile expert who seamlessly works across the entire stack. Builds complete features from database to UI, ensuring smooth integration between frontend and backend. Ideal for rapid prototyping and full feature implementation.

Use when: Building complete features, prototyping applications, working on small to medium projects, or when you need unified development across the stack.

graphql-architect - GraphQL schema and federation expert

Specialized in GraphQL ecosystem, from schema design to federation strategies. Masters resolver optimization, subscription patterns, and GraphQL best practices. Perfect for building flexible, efficient data layers.

Use when: Implementing GraphQL APIs, designing schemas, optimizing resolvers, setting up federation, or migrating from REST to GraphQL.

microservices-architect - Distributed systems designer

Expert in designing and implementing microservices architectures. Handles service decomposition, inter-service communication, distributed transactions, and orchestration. Ensures your system scales horizontally with resilience.

Use when: Breaking monoliths into microservices, designing distributed systems, implementing service mesh, or solving distributed system challenges.

mobile-developer - Cross-platform mobile specialist

Expert in creating native and cross-platform mobile applications for iOS and Android. Proficient in React Native, Flutter, and native development. Focuses on mobile-specific challenges like offline functionality, push notifications, and app store optimization.

Use when: Building mobile apps, implementing mobile-specific features, optimizing for mobile performance, or preparing for app store deployment.

ui-designer - Visual design and interaction specialist

Master of visual design who creates beautiful, intuitive, and accessible user interfaces. Expert in design systems, typography, color theory, and interaction patterns. Transforms ideas into polished designs that balance aesthetics with functionality while maintaining brand consistency.

Use when: Creating visual designs, building design systems, defining interaction patterns, establishing brand identity, or preparing design handoffs for development.

websocket-engineer - Real-time communication specialist

Master of real-time, bidirectional communication. Implements WebSocket servers, manages connections at scale, and handles real-time features like chat, notifications, and live updates. Expert in Socket.io and native WebSocket implementations.

Use when: Building chat applications, implementing real-time notifications, creating collaborative features, or developing live-updating dashboards.

wordpress-master - WordPress development and optimization expert

Specialist in WordPress ecosystem who builds everything from simple blogs to enterprise platforms. Masters theme development, plugin architecture, Gutenberg blocks, and performance optimization. Expert in both classic PHP development and modern block-based solutions.

Use when: Building WordPress sites, developing custom themes, creating plugins, implementing WooCommerce solutions, or optimizing WordPress performance.

🚀 Quick Selection Guide

If you need to...	Use this subagent
Build a REST API with database	backend-developer
Create a responsive web UI	frontend-developer
Develop a complete web application	fullstack-developer
Build a mobile app	mobile-developer
Design user interfaces	ui-designer
Create a desktop application	electron-pro
Design a new API structure	api-designer
Implement GraphQL	graphql-architect
Build a distributed system	microservices-architect
Add real-time features	websocket-engineer
Create a WordPress site	wordpress-master

💡 Common Combinations

Full-Stack Web Application:

Start with api-designer for API structure
Use backend-developer for server implementation
Employ frontend-developer for UI development

Enterprise System:

Begin with microservices-architect for system design
Use graphql-architect for data layer
Add backend-developer for service implementation

Real-time Application:

Start with websocket-engineer for real-time infrastructure
Add backend-developer for business logic
Use frontend-developer for interactive UI

Design-Driven Development:

Begin with ui-designer for visual design and prototypes
Use frontend-developer for implementation
Add accessibility-tester for compliance validation

WordPress Project:

Start with wordpress-master for architecture and setup
Add php-pro for custom PHP development
Use frontend-developer for custom JavaScript

🎬 Getting Started

Choose the right subagent based on your specific needs
Provide clear context about your project requirements
Specify your tech stack preferences if any
Describe your constraints (performance, scalability, timeline)
Let the subagent guide you through best practices and implementation

Each subagent comes with:

Deep expertise in their domain
Knowledge of current best practices
Ability to work with your existing codebase
Focus on clean, maintainable code
Understanding of production requirements

📚 Best Practices

Start with architecture: Use architects (API, GraphQL, Microservices) before implementation
Iterate frequently: Work with subagents in short cycles for better results
Combine expertise: Use multiple subagents for complex projects
Follow conventions: Each subagent knows the best practices for their domain
Think production-ready: All subagents consider scalability, security, and maintenance

Choose your subagent and start building amazing applications today!