GIS MCP Server

Instructions

Implementation Reference

• src/gis_mcp/shapely_functions.py:582-601 (handler)

  The core handler function for the 'geojson_to_geometry' tool, decorated with @gis_mcp.tool(). It converts a GeoJSON dictionary to a Shapely geometry and returns it as WKT string.

  @gis_mcp.tool()
  def geojson_to_geometry(geojson: Dict[str, Any]) -> Dict[str, Any]:
      """
      Convert GeoJSON to a Shapely geometry using shapely.geometry.shape.
      Args:
          geojson: GeoJSON dictionary.
      Returns:
          Dictionary with status, message, and geometry as WKT.
      """
      try:
          from shapely.geometry import shape
          geom = shape(geojson)
          return {
              "status": "success",
              "geometry": geom.wkt,
              "message": "GeoJSON converted to geometry successfully"
          }
      except Exception as e:
          logger.error(f"Error in geojson_to_geometry: {str(e)}")
          return {"status": "error", "message": str(e)}

• src/gis_mcp/shapely_functions.py:82-93 (registration)

  Resource listing that includes 'geojson_to_geometry' as one of the available Shapely utility operations.

  @gis_mcp.resource("gis://operations/shapely_util")
  def get_shapely_util_operations() -> Dict[str, List[str]]:
      """List available Shapely utility/advanced operations."""
      return {
          "operations": [
              "snap_geometry",
              "nearest_point_on_geometry",
              "normalize_geometry",
              "geometry_to_geojson",
              "geojson_to_geometry"
          ]
      }