How do I pass user input to a custom command?

You can use $1, $2, etc., for positional arguments, or $ARGUMENTS to capture everything the user types after the command name.

How do I reference local files within a command definition?

You can use the @ symbol followed by the filename (e.g., @readme.md) for relative paths, or use the ${CLAUDE_PLUGIN_ROOT} variable for absolute paths within your plugin.

What is the primary difference between a Command and a Skill?

Commands are explicitly invoked by the user via a slash prefix (e.g., /test), whereas Skills are background capabilities that Claude uses to gain domain-specific knowledge or guidance.

Can custom commands execute shell scripts?

Yes. By adding 'Bash' to the 'allowed-tools' section of the command's YAML frontmatter, you can include executable bash blocks in the command instructions.

Claude Command Builder

Name: Claude Command Builder
Author: nthplusio

bynthplusio

0•

Developer Tools

Streamlines the creation of custom slash commands to automate developer workflows and CLI interactions within Claude.

The Command Development skill provides a robust framework for building user-invocable slash commands that extend Claude's functionality. It guides developers through the entire lifecycle of command creation, from defining YAML frontmatter and tool permissions to implementing dynamic arguments and Bash execution. By utilizing standardized patterns for interactive prompts, file referencing, and multi-phase workflows, this skill enables the creation of powerful, domain-specific utilities that automate repetitive tasks like code formatting, project initialization, and deployment sequences directly from the chat interface.

Key Features

01Standardized patterns for interactive prompts and complex multi-phase workflows

02Dynamic argument handling using positional ($1) and catch-all ($ARGUMENTS) variables

03YAML-based command configuration for metadata and model overrides

040 GitHub stars

05Integrated Bash execution for direct CLI tool interaction

06Seamless file referencing using @ syntax and plugin root variables

Use Cases

01Developing multi-step /deploy commands that run tests before pushing to production

02Creating custom /format or /lint commands to maintain codebase standards

03Building interactive /init commands that generate boilerplate based on user input

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add nthplusio/functional-claude command-development

For use in Claude.ai and ChatGPT

Download Skill