SketchupMCP

Instructions

Implementation Reference

• src/sketchup_mcp/server.py:538-575 (handler)

  The core handler function for the 'eval_ruby' tool. It is decorated with @mcp.tool() for automatic registration and schema inference from type hints and docstring. The function evaluates the provided Ruby code by forwarding it to the SketchUp connection.

  @mcp.tool()
  def eval_ruby(
      ctx: Context,
      code: str
  ) -> str:
      """Evaluate arbitrary Ruby code in Sketchup"""
      try:
          logger.info(f"eval_ruby called with code length: {len(code)}")
          
          sketchup = get_sketchup_connection()
          
          result = sketchup.send_command(
              method="tools/call",
              params={
                  "name": "eval_ruby",
                  "arguments": {
                      "code": code
                  }
              },
              request_id=ctx.request_id
          )
          
          logger.info(f"eval_ruby result: {result}")
          
          # Format the response to include the result
          response = {
              "success": True,
              "result": result.get("content", [{"text": "Success"}])[0].get("text", "Success") if isinstance(result.get("content"), list) and len(result.get("content", [])) > 0 else "Success"
          }
          
          return json.dumps(response)
      except Exception as e:
          logger.error(f"Error in eval_ruby: {str(e)}")
          return json.dumps({
              "success": False,
              "error": str(e)
          })