Spatial queryPro tier

points_in_polygon

Count and list POIs whose geometry falls inside a user-supplied polygon (WKT, EPSG:4326). Optional theme filter. Useful when the search area is irregular: an administrative boundary, a district shape, or an isochrone polygon.

Use cases

Count every restaurant inside the Centro Storico polygon of Rome.
Filter the catchment of an isochrone_proxy result to only public-transit POIs.
Aggregate by theme for a custom drawn polygon (e.g., a development zone).
Run with include_results=false for fast count-only queries on large polygons.

Arguments

Name	Type	Required	Description
polygon_wkt	string	required	POLYGON or MULTIPOLYGON in WKT, lon/lat (EPSG:4326).
theme	string	optional	Filter by theme schema.
include_results	boolean	optional	If false, only per-theme counts (faster). Default `true`.
limit	integer	optional	Max points returned. Range 1 – 1,000. Default 200.

Example request

curl

bash

curl -X POST https://mcp.qubitdata.it/mcp \
  -H "Authorization: Bearer $QUBITDATA_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "points_in_polygon",
      "arguments": {
            "polygon_wkt": "POLYGON((12.45 41.89, 12.50 41.89, 12.50 41.92, 12.45 41.92, 12.45 41.89))",
            "theme": "commerce",
            "include_results": false
      }
    }
  }'

Example response

JSON-RPC 2.0 result

json

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "content": [
      {
        "type": "text",
        "text": "{\n  \"counts_by_theme\": { \"commerce\": 1284 },\n  \"total\": 1284\n}"
      }
    ]
  }
}

Prompts to try

Drop these into Claude Desktop, Cursor, or any MCP-aware client wired to https://mcp.qubitdata.it/mcp.

Claude Desktop

How many shops are inside this WKT polygon? Use points_in_polygon with include_results=false.
Cursor

Combine isochrone_proxy(15min walk) with points_in_polygon(theme=mobility) for a transit catchment.
Custom MCP client

List all healthcare POIs inside the admin boundary I'll pass as WKT.

Get started

Last updated: 2026-05-04