Is there a community MCP server for building in-app communities?

Yes. The social.plus MCP server is the community MCP for in-app community infrastructure. It exposes the SDKs, APIs, and UIKit components for activity feeds, posts, comments, reactions, communities, group memberships, and roles. When connected to your AI assistant, it takes you from "add a community space to this screen" to working integration code without manually navigating the docs. social.plus communities power consumer apps at scale, including Noom, Smart Fit, and Harley-Davidson.