How does this skill handle CLI configuration precedence?

It implements a specific hierarchy using Viper where flags take the highest priority, followed by environment variables, then configuration files, and finally hardcoded defaults.

Can I use this skill to create machine-readable output?

Absolutely. The skill includes a decision framework for output formats, recommending human-readable tables by default while providing patterns for JSON and YAML output via flags.

When should I use Cobra versus the Go standard library flag package?

Use the standard library 'flag' package for simple, single-command tools to keep dependencies low. Use Cobra for multi-command CLIs that require subcommands, POSIX-style flags, and shell completion.

Does it provide patterns for handling long-running processes?

Yes, it includes patterns for graceful shutdowns using signal.NotifyContext, ensuring that your CLI tool can clean up resources properly when receiving SIGINT or SIGTERM.

Go CLI Development

Name: Go CLI Development
Author: deandum

bydeandum

0•

Developer Tools

Builds robust, professional command-line interfaces in Go using Cobra, Viper, and standard library flags with industry-standard best practices.

This skill provides specialized guidance for developing high-quality command-line tools in Go, ranging from simple single-command utilities to complex, multi-level CLI applications. It features a comprehensive decision framework for choosing between the Go standard library and the Cobra/Viper ecosystem, alongside implementation patterns for POSIX-compliant flags, nested subcommands, and sophisticated configuration management. By emphasizing predictable UX, graceful signal handling, and standardized exit codes, this skill helps developers create Go CLIs that are composable, maintainable, and script-friendly.

Key Features

01Graceful shutdown patterns with signal handling and context

020 GitHub stars

03Configuration precedence management (Flags > Env > Config File)

04Nested subcommand project structures for complex CLI tools

05Standardized exit codes and machine-readable output formats

06Decision framework for stdlib flag vs. Cobra/Viper

Use Cases

01Creating developer-friendly tools with auto-generated help and shell completion

02Building enterprise-grade multi-command CLI tools like Git or Docker

03Implementing complex configuration systems for backend utilities

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add deandum/go-claude-resources go-cli

For use in Claude.ai and ChatGPT

Download Skill