cursor/plugins at 649 Stars: Cursor Ships Official Plugin Specification With Three Enterprise Distribution Modes — Default Off, Default On, and Required

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Cursor's official plugin spec repo defines how plugins bundle MCP servers, skills, subagents, rules, and hooks. The May 1 update added team marketplace setup without a repository plus three first-party install controls: Default Off (opt-in), Default On (opt-out), and Required (mandatory, no disable). Each plugin is a standalone directory with a .cursor-plugin/plugin.json manifest, establishing the standard for IDE agent extensibility.