GIS MCP Server

Instructions

Implementation Reference

• src/gis_mcp/shapely_functions.py:137-152 (handler)

  The handler function for the 'union' MCP tool. It takes two WKT geometry strings, computes their union using Shapely, and returns the result as WKT with status.

  @gis_mcp.tool()
  def union(geometry1: str, geometry2: str) -> Dict[str, Any]:
      """Combine two geometries."""
      try:
          from shapely import wkt
          geom1 = wkt.loads(geometry1)
          geom2 = wkt.loads(geometry2)
          result = geom1.union(geom2)
          return {
              "status": "success",
              "geometry": result.wkt,
              "message": "Union created successfully"
          }
      except Exception as e:
          logger.error(f"Error creating union: {str(e)}")
          raise ValueError(f"Failed to create union: {str(e)}")