Plugin Marketplace System

What: A complete plugin distribution and installation infrastructure that enables discovering and installing plugins from centralized marketplaces.

How to use:

# Enable a plugin from a marketplace
# Use the format: plugin-name@marketplace-name
claude settings --set enabledPlugins.formatter@official=true

Details:

• Marketplace manifests (marketplace.json) define available plugins with metadata
• Multiple marketplace sources supported: URL, GitHub repos, Git URLs, NPM packages, and local files
• Plugin sources: npm packages, GitHub repositories, git URLs, local directories
• Plugin ID format: plugin@marketplace (e.g., code-formatter@official-plugins)
• Marketplaces cached in ~/.config/claude-code/plugins/marketplaces/
• Plugin installations cached in ~/.config/claude-code/plugins/cache/
• Strict mode (default) requires plugin.json manifest in plugin folder
• Non-strict mode uses marketplace entry as manifest if plugin.json is missing
• Supports plugin versioning, categories, tags, and rich metadata
• Evidence: ba4() marketplace loader at line 377017, la4() plugin cacher at line 377152, aa4() plugin loader at line 377392, marketplace schemas at lines 376680-376846