Error Handler Generator
Generate complete error handling middleware for any framework with custom error classes, async wrappers, and proper HTTP status codes. Supports Express, Fastify, Next.js, Koa, and more.
🚀 Generate production-ready error handling middleware in seconds. This tool creates custom error classes, async wrappers, and proper HTTP status codes for Express, Fastify, Next.js, and Koa. One command, zero config—your error handling is done.
💡 Perfect for starting new API projects, standardizing error responses across routes, or fixing messy error handling in existing codebases. Works with TypeScript and JavaScript, saves directly to your project.
✨ Part of the LXGIC Dev Toolkit—110+ free tools built for developers. No paywalls, no sign-ups required.
Requirements
OPENAI_API_KEY environment variable required for code generation