GIS MCP Server

Instructions

Implementation Reference

• src/gis_mcp/shapely_functions.py:171-186 (handler)

  The core handler function for the 'symmetric_difference' tool. It takes two WKT geometry strings, parses them with Shapely, computes the symmetric difference, and returns the result as WKT with status and message.
  @gis_mcp.tool() def symmetric_difference(geometry1: str, geometry2: str) -> Dict[str, Any]: """Find symmetric difference between geometries.""" try: from shapely import wkt geom1 = wkt.loads(geometry1) geom2 = wkt.loads(geometry2) result = geom1.symmetric_difference(geom2) return { "status": "success", "geometry": result.wkt, "message": "Symmetric difference created successfully" } except Exception as e: logger.error(f"Error creating symmetric difference: {str(e)}") raise ValueError(f"Failed to create symmetric difference: {str(e)}")
• src/gis_mcp/shapely_functions.py:171-171 (registration)

  The @gis_mcp.tool() decorator registers the symmetric_difference function as an MCP tool.
  @gis_mcp.tool()
• src/gis_mcp/shapely_functions.py:11-22 (helper)

  Resource listing that includes 'symmetric_difference' among basic geometric operations, aiding tool discovery.
  @gis_mcp.resource("gis://operations/basic") def get_basic_operations() -> Dict[str, List[str]]: """List available basic geometric operations.""" return { "operations": [ "buffer", "intersection", "union", "difference", "symmetric_difference" ] }