anthropics/claude-plugins-official at 19.9K Stars: Anthropic Launches Official Plugin Marketplace With Curated Directory and Community Submissions

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Anthropic's official plugin repository provides a two-tier marketplace for Claude Code extensions — internal plugins maintained by Anthropic alongside community-submitted external plugins. Plugins install via /plugin install {name}@claude-plugins-official and follow a standard structure with metadata, MCP configuration, commands, agents, and skills. At 19.9K stars with 394 commits and active May 2026 updates, this represents the formalization of Claude Code's extension ecosystem with quality and security curation.