anthropics / claude-plugins-official

Anthropic-managed marketplace directory of curated plugins for Claude Code, split into internal and external plugin folders.

sickn33 / agentic-awesome-skills

Local CLI, MCP server, and catalog for searching, selecting, validating, and previewing installs of 2,700+ reusable SKILL.md agent playbooks.

AgriciDaniel / claude-seo

Claude Code plugin that runs parallel SEO audits covering technical SEO, E-E-A-T, schema, GEO, and agent readiness.

superdesigndev / treg

A registry and proxy that gives agents one base URL and token to call a catalog of third-party tool endpoints, billed per call.