Cadastre - Communes - CA Saint-Quentin-en-Yvelines

APINational · FranceNo auth

Cette donnée concerne les 12 communes de Sain-Quentin-en-Yvelines : Les Clayes-sous-Bois, Coignières, Élancourt, Guyancourt, Magny-les-Hameaux, Maurepas, Montigny-le-Bretonneux, Plaisir, Trappes, La Verrière, Villepreux et Voisins-le-Bretonneux. Origine…

land

Trust score

How is this computed?

good

Composite of 5 axes from our methodology (proof-based officialness, live verification, metadata completeness, license clarity, agent readiness).

Officialnessweight 25%40/100
40/100 from 5 proof signals (domain / portal-backlink / GitHub-org / reciprocal / policy).
Availabilityweight 25%100/100
Latest verification succeeded.
Metadata completenessweight 20%90/100
9 of 10 recommended metadata fields populated.
License clarityweight 15%0/100
No license declared upstream.
Agent readinessweight 15%85/100
OpenAPI spec URL declared · Spec format known (openapi) · Docs URL present · Homepage URL present · Topic tags assigned

Official Proof

Public Sector API

Proof Evidence

official domain (data.gouv.fr) (catalog: api_gouv_fr)

Data schema (15 fields)

Filterable via the API (15)

objectidanneemajicccodepcodcommnomshape_areageometryshape_lenid_geoshape_geocorners_geopoint_id_i_rand

Field	Type	Description
objectidIdentifiant interne ArcGIS	integer	—
anneemajicAnnée d'intégration MAJIC	integer	—
ccodepCode département	integer	—
codcommID commune	integer	—
nomNom de commune	string	—
shape_area	number	—
geometry	string	—
shape_len	number	—
id	integer	—
_geoshapeGéométrie	object	Au format d'une géométrie GeoJSON
_geocornersBoite englobante de la géométrie	array	Sous forme d'un tableau de coordonnées au format "lat,lon"
_geopointCoordonnée géographique	string	Centroïde au format "lat,lon"
_idIdentifiant	string (uri-reference)	Identifiant unique parmi toutes les lignes du jeu de données
_iNuméro de ligne	integer	Indice de la ligne dans le fichier d'origine
_randNombre aléatoire	integer	Un nombre aléatoire associé à la ligne qui permet d'obtenir un tri aléatoire par exemple

Schema captured from datafair 1 day ago.

Sample data (5 records)

Record 1_i: 1 · id: 1

{
  "_i": 1,
  "id": 1,
  "_id": "HRQd5mhQ6wZ4ODolMtHRj",
  "nom": "CLAYES-SOUS-BOIS (LES)",
  "_rand": 256150,
  "_score": null,
  "ccodep": 78,
  "codcomm": 780165,
  "geometry": "{\"type\":\"Polygon\",\"coordinates\":[[[1.9930923014831183,48.79864839141606],[1.9944474823676,48.79882934276281],[1.9946717307655781,48.798895970615014],[1.9940593605103005,48.79924946533231],[1.9940358141476722,48.799323818087444],[1.9935437421213076,48.799591212945025],[1.9933093370322115,48.79971849096363],[1.9931156733182511,48.79982364092456],[1.9930180852796635,48.799876568911635],[1.9929653684521,48.79990515701685],[1.9929670881265684,48.799914435738486],[1.9930098808892371,48.80006141027546]…",
  "objectid": 1,
  "_geopoint": "48.81673943690621,1.98350365628579",
  "shape_len": 12103.3397754959,
  "anneemajic": 2025,
  "shape_area": 6128130.6994
}

Record 2_i: 2 · id: 2

{
  "_i": 2,
  "id": 2,
  "_id": "gdiaLrKlAgSAEUcLLL-Da",
  "nom": "COIGNIERES",
  "_rand": 74164,
  "_score": null,
  "ccodep": 78,
  "codcomm": 780168,
  "geometry": "{\"type\":\"Polygon\",\"coordinates\":[[[1.9190289420423163,48.73307928981087],[1.9194528857491,48.733255787769146],[1.9197082585725,48.733380690617125],[1.9199380902222527,48.73357424666157],[1.9202847930847875,48.734137386710536],[1.9206552752440689,48.73473321765596],[1.9214425608889338,48.7358775527588],[1.9221756153115355,48.73680713537995],[1.9226241154083399,48.7373620498529],[1.9229510461637742,48.73777191749447],[1.9233545310797986,48.738327935420344],[1.9241223827403555,48.73938203835245],[1…",
  "objectid": 2,
  "_geopoint": "48.75040091411042,1.9177050997097431",
  "shape_len": 15145.7652509631,
  "anneemajic": 2025,
  "shape_area": 8015383.5744
}

Record 3_i: 3 · id: 3

{
  "_i": 3,
  "id": 3,
  "_id": "6A6UGUBK7s-aUxExdDeDq",
  "nom": "ELANCOURT",
  "_rand": 804362,
  "_score": null,
  "ccodep": 78,
  "codcomm": 780208,
  "geometry": "{\"type\":\"Polygon\",\"coordinates\":[[[1.973470294713624,48.753703456253284],[1.9767891473769215,48.75755297523668],[1.9769029461689533,48.757695913136246],[1.977108662001564,48.757954252166485],[1.9772256007056912,48.75811007897672],[1.97751986686153,48.75850240567508],[1.977644752386554,48.75866891559912],[1.9776864625921229,48.758724869297104],[1.9777411499353605,48.75879820680939],[1.97827028288711,48.75950803838899],[1.9785295609849507,48.759855711029566],[1.9785720672633726,48.7599127507315],[…",
  "objectid": 3,
  "_geopoint": "48.77713758382036,1.9611941214214657",
  "shape_len": 20102.8204478463,
  "anneemajic": 2025,
  "shape_area": 9259415.43495
}

Record 4_i: 4 · id: 4

{
  "_i": 4,
  "id": 4,
  "_id": "WfmMS4UmLxLA6fl4wDpPq",
  "nom": "GUYANCOURT",
  "_rand": 754158,
  "_score": null,
  "ccodep": 78,
  "codcomm": 780297,
  "geometry": "{\"type\":\"Polygon\",\"coordinates\":[[[2.088406724673116,48.752578449875536],[2.089790606996338,48.75429859984305],[2.0899527230612627,48.75423198233399],[2.0902297520415853,48.75412148648419],[2.0905131146250424,48.75401418795634],[2.091474207605857,48.753683453511556],[2.0915997412459855,48.753826727726036],[2.0916956499162667,48.75394602396191],[2.091714389606576,48.75398529495841],[2.0918339671257753,48.754269903241756],[2.091802096551477,48.75436246643693],[2.091776229310264,48.75436379073948],…",
  "objectid": 4,
  "_geopoint": "48.77341423270328,2.074406629780909",
  "shape_len": 16716.4136557371,
  "anneemajic": 2025,
  "shape_area": 13176187.0958
}

Record 5_i: 5 · id: 5

{
  "_i": 5,
  "id": 5,
  "_id": "2hj-hB77GQs4XnCQfh6DO",
  "nom": "MAGNY-LES-HAMEAUX",
  "_rand": 130707,
  "_score": null,
  "ccodep": 78,
  "codcomm": 780356,
  "geometry": "{\"type\":\"Polygon\",\"coordinates\":[[[2.0732003118737405,48.713759981843],[2.073492930798354,48.71397316011826],[2.073610007236155,48.714058377483035],[2.073724522163402,48.71413511987723],[2.0740443150864625,48.71433421599429],[2.0741177613549437,48.714375460754255],[2.0742379553073094,48.71443911752444],[2.074316313793047,48.71447932254191],[2.0743567260304143,48.714498895351944],[2.0743990258407563,48.71451929281898],[2.0744327182207067,48.71453476417502],[2.0744722190833906,48.71455217108058],[…",
  "objectid": 5,
  "_geopoint": "48.73787840816988,2.0492391732343265",
  "shape_len": 27803.5842512939,
  "anneemajic": 2025,
  "shape_area": 16737383.6589
}

Live sample captured at profiling time — values may have changed upstream.

Verification Status

Using the API

Configuration

Base URL: https://opendata.sqy.fr/data-fair/api/v1/datasets/cadastre-communes-ca-saint-quentin-en-yvelines/
Format: openapi

Query examples

curl -s 'https://opendata.sqy.fr/data-fair/api/v1/datasets/cadastre-communes-ca-saint-quentin-en-yvelines/' -H 'Accept: application/json'

Base API endpoint — see the documentation for available routes.

Full API documentation ↗

Dataset

Volume & freshness

Records

Last upstream update

24 days ago

2026-06-08

License

No license declared upstream.

○ Documentation○ Data dictionary○ Versioning

Source: datafair

Machine-readable & source

OpenAPI spec JSON

Embed this badge in a README or wiki — it always shows the latest verification state and quality tier.