Express questions are easy to answer from stale memory or outdated Express 4 patterns. Use this skill to ground answers in the official Express.js documentation and return the closest authoritative page instead of generic Node.js HTTP advice.

When to Use

Use this skill when the request is about:

Express concepts, middleware model, routing, and application structure
express(), the application object, request/response objects, and Router
Route paths, parameters, handlers, and HTTP method routing
Writing and using middleware, including error-handling middleware
Static files, template engines, and serving assets
Error handling, debugging, and working behind proxies
Database integration patterns documented by Express
Express 5 migration, performance best practices, security, and graceful shutdown
Official Express middleware packages (body-parser, cors, session, etc.)

Do not use this skill for:

expressjs-docs

When to Use