How do I implement user-friendly messages?

The skill includes a dedicated message mapper that translates internal error codes into localized, non-technical strings suitable for end-user display.

How does this help with React applications?

It provides production-ready Error Boundary components and Next.js error templates (error.tsx, global-error.tsx) to gracefully handle UI crashes and provide user-friendly fallbacks.

Can I use this with any error tracking service?

Yes, while the templates default to Sentry, the patterns are designed to be easily swappable for Bugsnag, LogRocket, or any other observability platform.

What makes the AppError hierarchy special?

It distinguishes between operational errors (expected) and programmer errors (unexpected), allowing your application to respond appropriately with specific HTTP codes and sanitized messages.

Does this include retry logic?

Yes, it includes a configurable retry utility supporting linear and exponential backoff, ideal for making external API integrations more resilient.

Robust Error Handling

Name: Robust Error Handling
Author: antoineschaller

byantoineschaller

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Analytics & Monitoring

Implements comprehensive error handling patterns, custom hierarchies, and observability integrations for TypeScript and React applications.

The Error Handling skill provides a standardized framework for managing application failures across the entire stack, from frontend UI crashes to backend API failures. It includes a robust class hierarchy for custom error types, React-specific error boundaries, Next.js route handlers, and server-side middleware. By integrating structured logging and retry logic with exponential backoff, it helps developers build resilient systems that provide clear user feedback while ensuring critical issues are captured in observability tools like Sentry or Bugsnag.

Key Features

01Standardized API error response formatting for Express and Server Actions

02React Error Boundaries and Next.js global/route-specific error templates

03Custom AppError hierarchy with HTTP status codes and operational flagging

04Structured logging with context and Sentry integration for real-time monitoring

051 GitHub stars

06Configurable retry utility with linear and exponential backoff for async tasks

Use Cases

01Building a production-ready Next.js application with unified error reporting

02Standardizing API response formats and error status codes across microservices

03Implementing automatic retries for flaky external API calls or network requests

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add antoineschaller/cortex-skills error-handling

For use in Claude.ai and ChatGPT

Download Skill