The claude-plugins-official repository is Anthropic's official, curated directory of high-quality plugins designed for Claude Code. Written primarily in Python, it serves as the central marketplace where users can discover, install, and manage plugins that extend Claude Code's capabilities. The repository is structured to accommodate both internal plugins developed and maintained by Anthropic's team and external plugins contributed by third-party partners and community members.
The repository maintains two distinct plugin categories within its structure. Internal plugins are located in the /plugins directory and are developed directly by Anthropic team members, with an example plugin provided as a reference implementation for developers. External plugins reside in the /external_plugins directory and come from partners and the community, though they must meet Anthropic's quality and security standards before approval. Users can install plugins directly through Claude Code's plugin system using the command /plugin install {plugin-name}@claude-plugins-official or by browsing the plugin marketplace within the interface.
A critical design principle documented in the repository is the immutability of plugin names. Once a plugin is published, its name slug cannot be changed, as users have the plugin installed under that specific identifier and renaming it would break their installations with a plugin-not-found error. To accommodate necessary changes to how plugins appear in the user interface, developers can use the displayName field instead. In cases where a rename is unavoidable, the repository provides a migration mechanism through a top-level renames map in the .claude-plugin/marketplace.json file, allowing the marketplace entry to transparently rewrite old slugs to new ones when users sync their installations.
The repository supports skill-bundle plugins, which allow source repositories that ship skills via SKILL.md files without a formal .claude-plugin/plugin.json manifest to declare skills directly in their marketplace entry. This is accomplished using strict: false mode with an explicit skills array, enabling curated subsets of skills to be exposed across multiple library subdirectories. Each skill is registered using the naming convention plugin-name:skill-name in Claude Code.
The repository emphasizes user caution regarding plugin installation, with a prominent warning that users should trust a plugin before installing, updating, or using it. Anthropic explicitly notes that it does not control what MCP servers, files, or other software are included in plugins and cannot verify their intended functionality or safety. Third-party partners interested in submitting plugins for inclusion must use the plugin directory submission form, ensuring the marketplace maintains its quality standards while remaining open to community contributions.
