What is the difference between a Command and a Skill?

Commands are manually triggered by the user via slash commands (e.g., /deploy), while Skills are model-invoked expertise that Claude automatically uses when it detects a relevant task.

How do I test my plugin during development?

You can create a local development marketplace in a JSON file, add your plugin's path, and use the /plugin install command to load it into your Claude session.

Where should I place my plugin components?

All components such as commands, agents, and skills must be placed at the plugin root. Only the plugin.json manifest should reside within the .claude-plugin/ directory.

Can I migrate Gemini extensions to Claude Code?

Yes, this skill provides a specific migration checklist and shell script to convert legacy gemini-extension.json files into modern Claude Code plugin structures.

How do I debug plugin loading issues?

Run Claude with the --debug flag to see detailed logs regarding plugin registration, manifest validation errors, and hook execution.

Claude Code Plugin Builder

Name: Claude Code Plugin Builder
Author: pleaseai

bypleaseai

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Developer Tools

Automates the creation, testing, and distribution of professional Claude Code plugins and extensions.

The Claude Code Plugin Builder is an expert-level development utility designed to streamline the lifecycle of Claude Code extensions. It provides automated scaffolding for essential components including slash commands, autonomous agents, event hooks, and model-invoked skills while enforcing strict manifest and directory standards. Whether you are integrating MCP servers for external data access or migrating legacy Gemini extensions, this skill simplifies complex plugin architectures, enabling developers to build, debug, and distribute custom AI-powered tools and private marketplaces with minimal friction.

Key Features

01One-click migration scripts for legacy Gemini CLI extensions

02Seamless integration with Model Context Protocol (MCP) servers

032 GitHub stars

04Support for custom slash commands, autonomous agents, and event hooks

05Comprehensive testing and debugging workflows with marketplace distribution tools

06Automated boilerplate generation for plugin manifests and directory structures

Use Cases

01Building custom slash commands to automate specialized local development tasks

02Developing private plugin marketplaces for team-wide tool distribution

03Creating autonomous security or audit agents to monitor code quality

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add pleaseai/claude-code-plugins plugin-builder

For use in Claude.ai and ChatGPT

Download Skill