How does this skill improve application security?

It explicitly prevents server-side stack traces and internal technical details from being sent over the network boundary to the browser.

Why shouldn't I throw raw errors in Server Actions?

Throwing raw errors in production often masks details for security reasons; returning a standardized result object ensures the client receives a safe, actionable message without leaking sensitive server info.

What is the benefit of a Single Source of Truth (SSoT) for messages?

A SSoT prevents message duplication, ensures a consistent tone across the application, and simplifies maintenance when updating text or adding internationalization.

What does the handleAsyncAction utility do?

It is a client-side helper that centralizes loading states, success callbacks, and error message display, reducing boilerplate in React components.

Next.js Unified Error Handling

Name: Next.js Unified Error Handling
Author: shoma-endo

byshoma-endo

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API Development

Standardizes error handling and user messaging across Next.js Server Actions to ensure consistent, secure, and user-friendly feedback.

This skill provides a comprehensive framework for managing errors across the network boundary in Next.js App Router applications. By enforcing a Single Source of Truth (SSoT) for error messages and utilizing a standardized Result pattern for Server Actions, it prevents sensitive server-side details from leaking to the client while streamlining UI state updates. It is particularly useful for developers looking to maintain high-quality UX and secure codebases by centralizing message management and automating repetitive client-side handling logic.

Key Features

010 GitHub stars

02Secures applications by preventing raw Error objects from crossing the network boundary

03Enforces Single Source of Truth (SSoT) for all user-facing error messages

04Standardizes Server Action responses using a unified ServerActionResult type

05Includes built-in anti-patterns and self-review checklists for code quality

06Automates UI state management through the handleAsyncAction utility

Use Cases

01Standardizing error responses in Next.js App Router projects using Server Actions

02Enhancing application security by sanitizing server-side errors before they reach the client

03Implementing centralized message management to prevent string duplication

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add shoma-endo/industry-specific-mc-training error-handling-and-messages

For use in Claude.ai and ChatGPT

Download Skill