Spatial MCP — reference renderer

Spatial MCP makes a live, interactive 3D scene a first-class MCP tool result, not a URL in text. This page is the reference renderer for the open artifact shape. It renders the conformant payload below — including one transformed from a different (foreign) tool's output — proving the shape is portable. Spec: SPATIAL_MCP.md.

three.ws forge_free → artifact

Foreign tool result → conformant artifact

The foreign result, transformed (what the renderer consumes)


  


  

    
Check your own payload

    

      

        Paste a tool result below. The same validator the spec ships runs on it as you type, in your
        browser, and names the field to fix rather than answering yes or no. Conformant payloads render
        underneath; unusable ones get the designed fallback, never a blank frame.
      

      

        
        
        
      

      
      
      

      

    

  


  

    A third-party MCP server that returns { url, previewImage } becomes conformant with a tiny adapter —
    see docs/spatial-mcp. Any renderer that speaks this shape (this one included) then
    displays it. No payment, wallet, or coin surface anywhere in the shape or the renderer.