DiscoveryFree tier

list_sources

List loaded data sources from the catalog. Filter by theme schema, geometry type, or spatial-resolvability flags. The agent's first call when it needs to know what's in here.

Use cases

Bootstrap an agent: get the full list of available datasets before any spatial call.
Show only joinable sources (joinable_only=true) when you need a geometry-resolvable layer for a tabular source.
Filter by theme="healthcare" to scope downstream queries to a single domain.
Power a UI that lets users browse the catalog by geometry type (Point / MultiPolygon / MultiLineString).

Arguments

Name	Type	Required	Description
theme	string	optional	Filter by theme schema (healthcare, commerce, risk, environment, …).
geometry_type	string	optional	`Point`, `MultiPolygon`, or `MultiLineString`.
joinable_only	boolean	optional	Only sources whose `geo_join_table` is populated.
location_resolvable	boolean	optional	Only sources spatially resolvable (have lat/lon or a join target).
limit	integer	optional	Max rows. Range 1 – 500. Default 100.

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": "list_sources",
      "arguments": {
            "theme": "healthcare",
            "limit": 5
      }
    }
  }'

Example response

JSON-RPC 2.0 result

json

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "content": [
      {
        "type": "text",
        "text": "[\n  { \"source_id\": \"minsalute_strutture_sanitarie\", \"theme\": \"healthcare\", \"geometry_type\": \"Point\", \"row_count\": 12435, \"qualified_table\": \"healthcare.minsalute_strutture_sanitarie\" },\n  { \"source_id\": \"agenas_strutture_residenziali\", \"theme\": \"healthcare\", \"geometry_type\": \"Point\", \"row_count\": 8721, \"qualified_table\": \"healthcare.agenas_strutture_residenziali\" }\n]"
      }
    ]
  }
}

Prompts to try

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

Claude Desktop

Which healthcare datasets are loaded? Show the table names and row counts.
Cursor

Use list_sources with joinable_only=true to find sources I can geo-resolve via JOIN.
Custom MCP client

List every dataset whose geometry_type is MultiPolygon.

Get started

Last updated: 2026-05-04