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Command Development

Command Development is an agent skill (a SKILL.md file) from anthropics/claude-plugins-official. It should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands". It works with Claude Code and has 37,478 GitHub stars across a repository of 7 listed skills.

github.com/anthropics/claude-plugins-official/plugins/plugin-dev/skills/command-development (opens in a new tab)

  • Official
  • Multi-skill repo
  • Plugin marketplace
  • Docs & writing
  • Actively maintained
View on GitHub (opens in a new tab)

Add this skill

Claude

This repository is a Claude Code plugin marketplace. In Claude Code:

/plugin marketplace add anthropics/claude-plugins-official
/plugin install plugin-dev@claude-plugins-official

In the Claude apps, zip the command-development folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/anthropics/claude-plugins-official.git
cp -r claude-plugins-official/plugins/plugin-dev/skills/command-development .agents/skills/command-development   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/anthropics/claude-plugins-official.git
cp -r claude-plugins-official/plugins/plugin-dev/skills/command-development .cursor/skills/command-development   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

This skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash command structure, YAML frontmatter fields, dynamic arguments, bash execution in commands, user interaction patterns, or command development best practices for Claude Code.

When it triggers

  • used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use A
  • "create a slash command"
  • "add a command"
  • "write a custom command"
  • "define command arguments"
  • "use command frontmatter"
  • "organize commands"
  • "create command with file references"

More skills in anthropics/claude-plugins-official

7 skills are listed from this repository.

Similar skills

More docs & writing skills

All Docs & writing

FAQ

Command Development FAQ

Still curious? Email info@appsgit.com.

What is the Command Development skill?

Command Development is an agent skill (a SKILL.md file) from anthropics/claude-plugins-official. It should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands". It works with Claude Code and has 37,478 GitHub stars across a repository of 7 listed skills. Its SKILL.md lives at github.com/anthropics/claude-plugins-official/plugins/plugin-dev/skills/command-development.

How do I install the Command Development skill?

In Claude Code, run /plugin marketplace add anthropics/claude-plugins-official and then /plugin install plugin-dev@claude-plugins-official. For Codex or Cursor, copy the command-development folder into .agents/skills/ or .cursor/skills/.

Is the Command Development skill free?

Yes. The repository is open source under the Apache-2.0 license.

Is Command Development maintained?

The repository's most recent commit was on Oct 5, 2026. appsgit only lists skills from repositories with a commit in the last six months.