Customize page unifies plugins, skills, MCPs, subagents, rules, commands, and hooks in one place, manageable at user, team, or workspace level with support for custom MCPs. A marketplace leaderboard shows your team's most popular extensions, installable in one click. Plugins now include prebuilt canvases like Hex for data visualization and Atlassian for real-time issue tracking. Team marketplaces can import plugin repositories from GitLab, BitBucket, or Azure DevOps for easier distribution.