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+# Plugin Marketplaces Overview
+
+Plugin marketplace = catalog distributing Claude Code extensions across teams/communities.
+Provides centralized discovery, version tracking, automatic updates, multiple source types.
+
+## Creation & Distribution Flow
+
+1. **Create plugins** — commands, agents, hooks, MCP servers, LSP servers (see [Plugins docs](https://code.claude.com/docs/en/plugins.md))
+2. **Create marketplace file** — `.claude-plugin/marketplace.json` listing plugins + sources
+3. **Host marketplace** — push to GitHub/GitLab/git host
+4. **Share** — users add via `/plugin marketplace add`, install via `/plugin install`
+
+Updates: push changes to repo → users refresh via `/plugin marketplace update`.
+
+## Directory Structure
+
+```
+my-marketplace/
+├── .claude-plugin/
+│   └── marketplace.json        # Marketplace catalog (required)
+└── plugins/
+    └── review-plugin/
+        ├── .claude-plugin/
+        │   └── plugin.json     # Plugin manifest
+        └── skills/
+            └── review/
+                └── SKILL.md    # Skill definition
+```
+
+## Walkthrough: Local Marketplace
+
+```bash
+# 1. Create structure
+mkdir -p my-marketplace/.claude-plugin
+mkdir -p my-marketplace/plugins/review-plugin/.claude-plugin
+mkdir -p my-marketplace/plugins/review-plugin/skills/review
+
+# 2. Create skill (SKILL.md), plugin manifest (plugin.json), marketplace catalog (marketplace.json)
+
+# 3. Add and install
+/plugin marketplace add ./my-marketplace
+/plugin install review-plugin@my-plugins
+
+# 4. Test
+/review
+```
+
+## Plugin Installation Behavior
+
+Plugins copied to cache location on install. Cannot reference files outside plugin directory with `../`.
+Workarounds: symlinks (followed during copying) or restructure so shared files are inside plugin source path.
+
+## User Commands
+
+| Command | Purpose |
+|---------|---------|
+| `/plugin marketplace add <source>` | Add marketplace |
+| `/plugin marketplace update` | Refresh marketplace |
+| `/plugin install <name>@<marketplace>` | Install plugin |
+| `/plugin validate .` | Validate marketplace JSON |
+| `claude plugin validate .` | CLI validation |
+
+## Validation & Testing
+
+```bash
+# Validate marketplace JSON
+claude plugin validate .
+# or within Claude Code:
+/plugin validate .
+
+# Test locally before distribution
+/plugin marketplace add ./my-local-marketplace
+/plugin install test-plugin@my-local-marketplace
+```
+
+## Related References
+
+- **Schema:** `references/plugin-marketplace-schema.md`
+- **Sources:** `references/plugin-marketplace-sources.md`
+- **Hosting:** `references/plugin-marketplace-hosting.md`
+- **Troubleshooting:** `references/plugin-marketplace-troubleshooting.md`
+
+## Official Documentation
+
+- [Plugin Marketplaces](https://code.claude.com/docs/en/plugin-marketplaces.md)
+- [Discover Plugins](https://code.claude.com/docs/en/discover-plugins.md)
+- [Create Plugins](https://code.claude.com/docs/en/plugins.md)
+- [Plugins Reference](https://code.claude.com/docs/en/plugins-reference.md)
+- [Plugin Settings](https://code.claude.com/docs/en/settings.md#plugin-settings)