What is the difference between a Command and a Skill?

Commands are single-file markdown scripts that support @ and ! injection for dynamic context gathering, while Skills are more complex multi-file structures designed for heavy logic and extensive documentation.

How does argument handling work in Command Authoring?

Commands support positional arguments using $1, $2, or the $ARGUMENTS variable, allowing users to pass specific IDs, branch names, or flags directly through the slash command menu.

Can I run shell commands within my custom Claude commands?

Yes, by using the !`command` syntax (with backticks), you can execute standard bash commands like 'git status' or 'ls' and have the output injected directly into the command context.

How do I inject file contents into a Claude command?

Use the @path/to/file syntax, ideally wrapped within tags. This automatically pulls the file's current data into the prompt at the moment of invocation.

Command Authoring Toolkit

Name: Command Authoring Toolkit
Author: Git-Fg

byGit-Fg

•

Developer Tools

Creates dynamic, single-file Claude Code commands using filesystem injection and shell execution patterns.

The Command Authoring skill provides a standardized framework for building specialized Claude Code commands that interact deeply with your local development environment. By leveraging @path injection for file content and !command syntax for real-time shell output, developers can create context-aware tools that capture git states, CI/CD status, and project-specific metadata. It simplifies the creation of thin interfaces that gather runtime context before delegating complex logic to specialized skills, ensuring a seamless and automated developer experience tailored to specific project needs.

Key Features

01Graceful error handling for missing files or failed commands

02Standardized command namespacing and folder hierarchy mapping

03Dynamic @path file content injection for real-time context

04Real-time shell command execution via ! syntax

051 GitHub stars

06Positional argument handling with $1 and $ARGUMENTS support

Use Cases

01Building diagnostic tools that automatically inject environment state and logs

02Creating custom git-integrated workflow commands for branch management

03Authoring project-specific automation with flexible argument support

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add git-fg/meta-plugin-manager command-authoring

For use in Claude.ai and ChatGPT

Download Skill