# French cadastral parcels and zoning in an area

> Index of the TerraLab docs for agents: [llms.txt](https://terra-lab.ai/docs/llms.txt). Every docs page is also served as markdown: add .md to its URL.

Every French cadastral parcel in an area, with its reference, its area and the urban plan zone it lies in, as a GIS file.

| | |
| --- | --- |
| REST | `POST https://mcp.terra-lab.ai/v1/tools/french_parcels_in_area` |
| MCP tool | `french_parcels_in_area` on `https://mcp.terra-lab.ai/mcp` |
| Group | France |

## Request

```bash
curl -X POST https://mcp.terra-lab.ai/v1/tools/french_parcels_in_area \
  -H "Authorization: Bearer $TERRALAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"area":{"place":"Palais de l'\''Isle, Annecy","radius_m":1000},"formats":["geojson","csv"]}'
```

```python
import os
import requests

response = requests.post(
    "https://mcp.terra-lab.ai/v1/tools/french_parcels_in_area",
    headers={"Authorization": f"Bearer {os.environ['TERRALAB_API_KEY']}"},
    json={
        "area": {
            "place": "Palais de l'Isle, Annecy",
            "radius_m": 1000,
        },
        "formats": ["geojson", "csv"],
    },
    timeout=120,
)
response.raise_for_status()
print(response.json()["structuredContent"])
```

```javascript
const response = await fetch('https://mcp.terra-lab.ai/v1/tools/french_parcels_in_area', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.TERRALAB_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "area": {
      "place": "Palais de l'Isle, Annecy",
      "radius_m": 1000
    },
    "formats": [
      "geojson",
      "csv"
    ]
  }),
});
const data = await response.json();
console.log(data.structuredContent);
```

## Parameters

A JSON object in the request body; in an MCP client, the arguments of the tool call.

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `area` | object | Yes | The area: a bbox, or a place (name, address or coordinates) with an optional radius in metres. The place the user asks about, not the user's own location. |
| `area.bbox` | array of number | No | [west, south, east, north] in decimal degrees (WGS 84). Exactly 4 items. |
| `area.place` | string or object | No | A place name or address, or a point. |
| `area.radius_m` | number | No | Radius around the place in metres. From 1 to 100000. |
| `formats` | array of string | No | Download formats. Default `["geojson"]`. |

## Response

`structuredContent` holds the result, `content` the same result as text for a model, and `isError` is `true` when the tool refused the request or failed; then `structuredContent.code`, `message` and `hint` say what to change.

```json
{
  "structuredContent": {
    "sources": [{ "name": "...", "licence": "...", "url": "..." }],
    "downloads": [{ "label": "...", "format": "...", "url": "...", "name": "..." }]
  },
  "content": [{ "type": "text", "text": "..." }],
  "isError": false
}
```

Every result lists its `sources` with their licence. File results come as `downloads`: each link builds its file when opened.

## Errors

A missing key answers `401`, an empty balance `402`, too many calls `429`. A call that fails or finds nothing is not counted. See [Errors and rate limits](https://terra-lab.ai/docs/errors).

## Description for agents

The text the server gives an agent to decide when to call this tool:

> Use this when the user asks for all the cadastral parcels (parcelles cadastrales) in an area of France, for example "the parcels within 1 km of Annecy old town" or "the plots and their PLU zones in this bbox": each parcel with its reference (commune, INSEE code, section, number), cadastral area and the local urban plan zone it lies in (PLU or PLUi: label, type U, AU, A or N, document). The area is a place with a radius (default 300 m, at most 1,000 m) or a bbox of at most 4 km². For the single parcel at one address or point, use french_parcel instead. Shows the parcels on a map with GeoJSON, KML, Shapefile zip or CSV downloads. France only. Never returns owners or property sales. Never use the user's current location unless they type it. Give the place as the user names it (place name, address or coordinates): this tool locates it, so find_places is not needed first. Download links build their file when opened; no file is saved. The user opens the file in QGIS or any GIS: this server cannot load it into the user's own QGIS or any app on their computer. Never pass these links to open_gis_file: list every format the user needs in formats, in this one call.


Source: https://terra-lab.ai/docs/api/french_parcels_in_area · Updated 2026-11-15