Three.js — an example artifactory

The Phase 4 pilot (doc 45 §8, board mtoo81hz7eu6je): a THIRD PARTY's MCP App, byte-for-byte the reference @modelcontextprotocol/server-threejs from modelcontextprotocol/ext-apps, hosted by the Dimension engine and rendered in the artifact-view seat with zero code of its own.

The whole plugin is packaging: .mcp.json names the server (stdio), and dimension.plugin.json says which server the engine hosts as an App (artifactories: [{ mcpServer: "threejs" }]). Nothing else.

Try it: install artifactory-threejs from Dimension Community (it is in the catalog), or bun install here and link the directory as a plugin in a dev home (plugins op:link / inso plugins link .); then ask the agent to show a 3D scene.