Anthropic's Official Claude Code Plugins Directory

Repositoryanthropics/claude-plugins-officialResource

Anthropic manages claude-plugins-official, a curated directory and marketplace for Claude Code plugins. The repository houses both official tools and reviewed third-party extensions that package skills, slash commands, and MCP servers.

Key points

  1. Dual structure: /plugins holds internal plugins maintained by Anthropic, while /external_plugins hosts third-party and community contributions.
  2. Direct installation inside Claude Code via /plugin install {plugin-name}@claude-plugins-official or through the /plugin > Discover interface.
  3. Standardised layout: Plugins rely on a .claude-plugin/plugin.json manifest and can bundle .mcp.json configurations, slash commands, agent definitions, and skills.
  4. Immutable naming: Plugin name slugs cannot be modified after release; renames require explicit mapping in marketplace.json to ensure auto-migration.
  5. Skill-bundle plugins: Repositories providing SKILL.md files without a plugin manifest can be declared via strict: false.
  6. Security guidance: Anthropic stresses that users must verify plugin trust, as external MCP servers and bundled software are outside Anthropic's control.

Why it matters

For software engineers adopting Claude Code in terminal workflows, this central marketplace standardises tool integration. Combining the Model Context Protocol (MCP) with custom agent skills enables modular, reproducible CLI assistant setups.

Analysis

With tens of thousands of GitHub stars, active governance, and formal contribution guidelines, this repository exhibits solid maturity. It bridges MCP tooling and Claude Code's agent capabilities through structured JSON definitions, serving developers who want to discover, distribute, or run specialised CLI workflows.

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Summary generated by AI (Gemini 3.8 Flash, 27 September 2026). It may contain errors – the original source is authoritative.

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