express

Create Express.js routes and middleware with BaseController patterns.

101|14|Updated Nov 2, 2025
One-click install
npx skills add https://github.com/blencorp/claude-code-kit --skill express
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: express
Source: https://github.com/blencorp/claude-code-kit/tree/main/cli/kits/express/skills/express
Command: npx skills add https://github.com/blencorp/claude-code-kit --skill express

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides essential Express.js patterns to build scalable and maintainable backend APIs. It simplifies the implementation of routing, middleware, and error handling, reducing the boilerplate and common mistakes associated with Express development.

Core Features & Use Cases

  • Clean Route Pattern: Define routes that delegate logic to controllers, keeping your routing files concise and focused.
  • BaseController for Consistency: Implement a BaseController for standardized error handling, response formatting, and Sentry integration across your API.
  • Middleware Composition: Learn to build and order authentication, audit, and error boundary middleware effectively.
  • Use Case: When adding a new API endpoint, this skill guides you in creating a clean route, a corresponding controller using the BaseController pattern, and integrating necessary middleware, ensuring consistency and robustness.

Quick Start

Use the express skill to create a new Express route for user authentication with a BaseController.

Frequently Asked Questions about express

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I structure Express.js routes with controllers to keep code clean and maintainable?

Express routing benefits from a controller pattern where routes delegate business logic to separate controller classes. This separation keeps routing files concise, improves testability, and makes middleware composition straightforward across your API endpoints.

What's the best way to handle errors consistently across Express.js middleware and routes?

Implement a BaseController pattern with standardized error handling, response formatting, and optional Sentry integration for tracing. This ensures uniform error responses and centralized exception management across all Express endpoints and middleware layers.

How do I compose authentication and validation middleware in Express effectively?

Order middleware by responsibility: authentication first, then audit or validation, then error boundaries. Middleware composition in Express allows you to chain these layers consistently and reuse them across routes, reducing boilerplate and enforcing security policies uniformly.

Can I use Express with TypeScript for type-safe routing and middleware?

Yes. Express routing, middleware, and controller patterns are TypeScript-ready. Typed controllers and middleware provide compile-time safety for request handlers, error callbacks, and response objects, catching issues before runtime.

What problems does a BaseController pattern solve in Express API development?

BaseController eliminates repetitive error handling, response formatting, and Sentry setup across route handlers. It enforces consistent success and error response shapes, delegates business logic safely away from routes, and scales with your backend application.

When should I separate routing, middleware, and controller logic in an Express app?

Always. Separation of concerns in Express prevents routes from becoming bloated with business logic, improves middleware reusability, enables cleaner testing, and reduces the surface area for bugs in request/response handling and authentication flows.