How does it discover plugin components?

The skill scans your directory for specific patterns like skills/*/SKILL.md, commands/**/*.md, and agents/*.md to automatically populate the manifest.

Can it validate my existing manifest files?

Absolutely. It validates naming conventions, required fields, JSON syntax, and ensures all referenced source paths exist before writing changes.

Does this skill handle version control?

Yes, it manages semantic versioning (SemVer) and can automatically bump Major, Minor, or Patch versions during the update process.

What files does the Manifest Generator skill manage?

It specifically manages plugin.json for individual plugin metadata and marketplace.json for managing collections of plugins in a marketplace.

Manifest Generator

Name: Manifest Generator
Author: astoeffer

byastoeffer

0•

Developer Tools

Generates and validates plugin manifest files to streamline Claude Code plugin development and marketplace distribution.

The Manifest Generator skill automates the creation and maintenance of essential metadata files, specifically plugin.json and marketplace.json, required for Claude Code extensions. It utilizes intelligent auto-discovery patterns to scan your project for skills, commands, and agents, automatically extracting metadata to keep manifests synchronized with your codebase. By enforcing strict validation rules and semantic versioning standards, this skill ensures your plugins are always distribution-ready and compatible with the plugin marketplace ecosystem.

Key Features

010 GitHub stars

02Built-in semantic versioning (SemVer) with auto-incrementing

03Strict schema validation for manifest naming and structure

04Marketplace entry management for marketplace.json files

05Metadata extraction from skills, commands, agents, and hooks

06Automated plugin.json generation via component auto-discovery

Use Cases

01Automating version bumps and validation checks during a release workflow

02Initializing metadata and configuration for a brand new Claude Code plugin

03Updating a plugin marketplace with new or revised plugin version entries

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add astoeffer/plugin-marketplace manifest-generator

For use in Claude.ai and ChatGPT

Download Skill