error-handling

Implement idiomatic Go 1.13+ error handling with sentinel, wrapped, and custom errors.

2|1|Updated Nov 13, 2025
One-click install
npx skills add https://github.com/MolcajeteAI/plugin --skill error-handling-molcajeteai
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: error-handling
Source: https://github.com/MolcajeteAI/plugin/tree/main/deprecated/tech-stacks/go/skills/error-handling
Command: npx skills add https://github.com/MolcajeteAI/plugin --skill error-handling-molcajeteai

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides clear, idiomatic patterns for managing errors in Go applications, ensuring robust and maintainable code.

Core Features & Use Cases

  • Error Creation: Demonstrates sentinel errors, wrapped errors, and custom error types.
  • Error Checking: Illustrates errors.Is and errors.As for effective error inspection.
  • Use Case: When building a web service, use this skill's patterns to consistently wrap database errors with request context, making debugging significantly easier.

Quick Start

Use the error-handling skill to understand how to wrap errors with context in Go.

Frequently Asked Questions about error-handling

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

FAQPage Schema
How do I check wrapped errors in Go using errors.Is and errors.As?▼

To check wrapped errors in Go, use `errors.Is` to compare against sentinel values and `errors.As` to extract custom error types. These standard library functions provide effective error inspection for wrapped chains.

How do I wrap database errors with request context in a Go web service?▼

To wrap database errors with request context in a Go web service, apply error wrapping patterns to add contextual information to the original error. This technique makes debugging significantly easier by tracing the error's origin.

Can I handle multiple errors and propagate them in Go?▼

Yes, you can handle multiple errors and propagate them in Go by following established error handling best practices. This includes managing error propagation across function calls and addressing multi-error scenarios effectively.

What are the best practices for error handling in Go goroutines?▼

Best practices for error handling in Go goroutines involve propagating errors safely back to the caller without causing deadlocks. This ensures concurrent operations fail gracefully and maintain application stability.