Lexicon · reference data
French agricultural data, linked together
Land registry, CAP plots, plant protection products, weather, businesses, agronomic knowledge: Lexicon brings together 623M public records and links them with shared keys. A commons of the OSFarm association, open to all.
- linked records
- 623M
- datasets
- 54
- data providers
- 33
- datasets open to all
- 46
Who does what
Lexicon is a commons of the OSFarm association, and Ekylibre SAS is its main contributor. We produce 16 of its datasets, such as crop management plans, intervention templates and the agricultural chart of accounts.
7 families of data
INSEE, IGN, ANSES, Météo-France, Agence Bio, ASP and many more: each dataset is taken from its source, kept up to date and linked to the others.
Land and territory
11 datasets · 289M rows
Cadastral parcels · Hydrography · Cadastral owners · CAP declared plots (LPIS) · Land prices …
Climate
1 dataset · 221M rows
Weather observations
Inputs and regulation
8 datasets · 61M rows
Plant protection product purchases · Authorised plant protection products · Active substances · Plant varieties · Fertilisers …
Businesses and subsidies
11 datasets · 51M rows
Businesses (SIREN) · CAP beneficiaries · Business links · Organic farming · Quality and origin labels …
Markets and economics
5 datasets · 192K rows
EU market prices · Reference prices · Agricultural chart of accounts · Fuel prices · Budget templates
Agronomic knowledge
13 datasets · 399K rows
Agricultural R&D · Agricultural productions · Open nomenclature · Product variants · Crop management plans …
Food systems
5 datasets · 242K rows
School and public canteens · Food safety inspections · Territorial food projects · Agricultural education · AgroEDI exchange standard
Four ways to use it
In the browser
Every dataset can be browsed and filtered on lexicon.osfarm.org. The “Identify a plot” tool shows everything Lexicon knows about a point on the map.
Through the API
Every page also exists in JSON and CSV: just add .json or .csv to its address.
In your database
Each dataset is a versioned package you can load into your own PostgreSQL database.
Through an AI assistant
Lexicon’s MCP server lets an assistant search and cross-reference the datasets, with their sources.
curl https://lexicon.osfarm.org/phytosanitary/products.json{
"title": "Produits",
"table": {
"columns": { "name": "Nom", "firm": "Firme", "type": "Type",
"active-compounds": "Principes actifs", "state": "État d'usage" },
"rows": [
{ "name": { "@type": "Text", "value": "…" },
"type": { "@type": "Text", "value": "PPP" },
"active-compounds": { "@type": "List", "values": ["…"] },
"state": { "@type": "Text", "value": "Autorisé" } },
…
]
},
"credit": { "provider": { "value": "ANSES" }, "license": { "value": "Open Licence" }, … },
"page": 1, "items-per-page": 150, "items-total": …, "total-pages": …,
"formats": { … }
}A paginated response, with the dataset’s source, date and licence. No key, no sign-up.API and MCP details
Open, sourced, traceable
Lexicon’s source code is open on GitHub. Each dataset keeps the licence of its source, shown in the catalogue with its date and version.
46 datasets are open to all. 8 are reserved for members of the OSFarm association, who access them with an API key.
Who it is for
Software vendors and agtech start-ups
up-to-date reference data without having to collect it yourself.
Co-ops and farm organisations
public data ready to cross-reference with your members’ data.
Researchers, teachers, local authorities
a single base for studying an area or a supply chain.
Farmers
indirectly, through Ekylibre and Aiffel, which use it to check a rate or identify a plot.
Need Lexicon inside your tools?
We help you connect the API, load the PostgreSQL packages or propose a new dataset.