plugin-forge

CC Plugin Forge

Purpose

Build and manage Claude Code plugins with correct structure, manifests, and marketplace integration. Includes workflows, automation scripts, and reference docs.

If the requested target is Antigravity, stop this Claude plugin workflow. Do not write .claude-plugin manifests or claim they are portable. Use the current official Antigravity plugin schema and CLI workflow in a separate runtime-specific task instead.

When to Use

• Creating new plugins for a marketplace
• Adding/modifying plugin components (commands, skills, agents, hooks)
• Updating plugin versions
• Working with plugin or marketplace manifests
• Setting up local plugin testing
• Publishing plugins

Getting Started

Create New Plugin

Use create_plugin.py to generate plugin structure:

python scripts/create_plugin.py plugin-name \
  --marketplace-root /path/to/marketplace \
  --author-name "Your Name" \
  --author-email "[email protected]" \
  --description "Plugin description" \
  --keywords "keyword1,keyword2" \
  --category "productivity"

This automatically:

• Creates plugin directory structure
• Generates plugin.json manifest
• Creates README template
• Updates marketplace.json

Bump Version

Use bump_version.py to update versions in both manifests:

python scripts/bump_version.py plugin-name major|minor|patch \
  --marketplace-root /path/to/marketplace

Semantic versioning:

• major: Breaking changes (1.0.0 → 2.0.0)
• minor: New features, refactoring (1.0.0 → 1.1.0)
• patch: Bug fixes, docs (1.0.0 → 1.0.1)

Development Workflow

1. Create Structure

Manual approach (if not using script):

mkdir -p plugins/plugin-name/.claude-plugin
mkdir -p plugins/plugin-name/commands
mkdir -p plugins/plugin-name/skills

2. Plugin Manifest

File: plugins/plugin-name/.claude-plugin/plugin.json

{
  "name": "plugin-name",
  "version": "0.1.0",
  "description": "Plugin description",
  "author": {
    "name": "Your Name",
    "email": "[email protected]"
  },
  "keywords": ["keyword1", "keyword2"]
}