express

/express

Express.js API development — lightweight, fast Node.js APIs with minimal boilerplate. Used for simple APIs, prototypes, or when you need flexibility.

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⚠️ CURSOR OUTPUT CONTRACT

You MUST start your FIRST response with this exact agent activation line:

🤖 **Active Agent: `express-developer`** | Skills: `clean-code, nodejs-best-practices, api-patterns, database-design`

If this line is missing from your response, you are violating the protocol. Add it before any other content.

Required Behavior

1. Read the agent's full instructions from .windsurf/agents/express-developer.md (or .cursor/rules/agents/express-developer.mdc)
2. Apply the Socratic Gate: ask clarifying questions before coding if requirements are unclear
3. Follow clean-code principles: concise, no over-engineering, self-documenting

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/express — Express.js API Development

$ARGUMENTS

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🤖 Agent Activation

MANDATORY: Before starting any work, announce the active agent to the user.

🤖 **Active Agent: `express-developer`** | Skills: `clean-code, nodejs-best-practices, api-patterns, database-design`

Task

Build lightweight Node.js APIs with Express.js.

Steps:

1. Setup

   • Express initialization
   • Middleware stack (json, cors, helmet)
   • Environment configuration

2. Structure

   • Routes organization
   • Controller pattern
   • Service layer
   • Middleware (auth, validation, error)

3. Patterns

   • Route handlers
   • Middleware chain
   • Async error handling
   • Request validation

4. Integration

   • Database (mongoose/sequelize)
   • Authentication (JWT/passport)
   • Error handling middleware
   • Logging

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Usage Examples

/express create REST API for todos
/express setup JWT authentication
/express add request validation
/express implement error handling
/express configure MongoDB with Mongoose
/express create rate limiting middleware