Agent skill · software engineering · sundial-org
error-handler-gen
Generate error handling middleware for any framework. Use when setting up API error handling.
Why this skill is useful
Generates executable error handling middleware and custom error classes for multiple frameworks, providing capabilities not typically known by the AI.
What it needs
Requires openai account access. About 1k tokens when loaded. Last updated 2026-03-07. 639 stars on the source repository.
What this skill does
Error Handler Generator Good error handling means custom error classes, proper status codes, and consistent response shapes. This tool generates all of it for your framework. One command. Zero config. Just works. Quick Start What It Does Generates error middleware for your framework Creates custom error classes (NotFoundError, ValidationError, etc.) Includes async wrapper to catch promise rejections Sets up proper HTTP status codes Usage Examples Best Practices Don't leak stack traces - only show them in development Log errors server-side - you need them for debugging Use error codes - clients can handle specific codes Be consistent - same error shape everywhere When to Use This Starting a new API project Standardizing error handling across routes Adding proper error responses to a messy codebase Setting up error monitoring Part of the LXGIC Dev Toolkit This is one of 110+ free developer tools built by LXGIC Studios. No paywalls, no sign-ups, no API keys on free tiers. Just tools that work. Find more: GitHub: https://github.com/LXGIC-Studios Twitter: https://x.com/lxgicstudios Substack: https://lxgicstudios.substack.com Website: https://lxgic.dev Requirements No install needed. Just run with npx. Node.js 18+ recommended. Needs OPENAIAPIKEY environment variable. How It Works Generates framework-specific error handling code including custom error classes, middleware, and async wrappers. The output follows best practices for each framework. License MIT. Free forever. Use it however you want.
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills sundial-org/error-handler-gen