GIS MCP Server

Instructions

Implementation Reference

• src/gis_mcp/shapely_functions.py:189-203 (handler)

  The handler function that implements the 'convex_hull' tool logic. It parses WKT input, computes the convex hull using Shapely.geometry.convex_hull, and returns the result as WKT.

  @gis_mcp.tool()
  def convex_hull(geometry: str) -> Dict[str, Any]:
      """Calculate convex hull of a geometry."""
      try:
          from shapely import wkt
          geom = wkt.loads(geometry)
          result = geom.convex_hull
          return {
              "status": "success",
              "geometry": result.wkt,
              "message": "Convex hull created successfully"
          }
      except Exception as e:
          logger.error(f"Error creating convex hull: {str(e)}")
          raise ValueError(f"Failed to create convex hull: {str(e)}")

• src/gis_mcp/shapely_functions.py:24-37 (registration)

  Resource listing that includes 'convex_hull' as an available geometric operation, aiding in tool discovery.

  @gis_mcp.resource("gis://operations/geometric")
  def get_geometric_properties() -> Dict[str, List[str]]:
      """List available geometric property operations."""
      return {
          "operations": [
              "convex_hull",
              "envelope",
              "minimum_rotated_rectangle",
              "get_centroid",
              "get_bounds",
              "get_coordinates",
              "get_geometry_type"
          ]
      }