Gabin API and MCP

Gabin serves French public data on companies and on the buildings they occupy, as a REST API and as an MCP server. You use it to build apps, internal tools or AI agents that need to know who is where: which companies occupy or own a building, which buildings a company uses, what is in a zone.

Quickstart

Create a key and make your first call in two minutes.

Connect the MCP server

Give Claude, ChatGPT, Cursor or Claude Code access to Gabin.

Guides

Companies, buildings, zones, advanced search, map tiles.

API reference

Every endpoint, parameter and field (OpenAPI 3.1).

What the data covers

Domain	Content	Main source
Companies	Legal units and establishments, activity (NAF code), legal form, headcount range, registered office	SIRENE (Insee)
Officers	Named officers and their mandates, corporate officers, relations between companies	RNE (INPI)
Annual accounts	Revenue, net income and balance-sheet items when the company filed them	RNE (INPI)
Buildings	Footprint, use, construction year, levels, dwellings, energy class (DPE), linked companies	BDNB (CSTB)
Real estate	Transactions (DVF), corporate owners, condominiums, parking, building permits, fiber, planning zones, market figures	Public open data
Parcels and addresses	Cadastral parcels, address geocoding to the building at the street number	Cadastre, BAN
Zones	Cities, districts (IRIS), departments, boundaries and market figures	Insee, IGN

The data page lists the sources, how fresh they are and the rules applied to personal data.

How you access it

REST API at https://api.gabin.ai/v1. JSON responses, cursor pagination, an OpenAPI 3.1 spec you can feed to code generators or to an LLM.
MCP server at https://mcp.gabin.ai/mcp. 18 read-only tools that an AI assistant calls on your behalf. See MCP overview.

Both use the same account, the same limits and the same data. Access is free during the current preview; every call needs a key, see authentication.

A first call

curl "https://api.gabin.ai/v1/companies?q=boulangerie&limit=1" \
  -H "Authorization: Bearer $GABIN_API_KEY"

{
  "data": [
    {
      "siren": "453060733",
      "name": "BOULANGERIE AUX DELICES",
      "naf_code": "10.71C",
      "naf_label": "Boulangerie et boulangerie-pâtisserie",
      "legal_form": "SAS",
      "headquarters": { "postal_code": "93400", "city": "Saint-Ouen-sur-Seine", "…": "…" },
      "gabin_url": "https://gabin.ai/entreprise/boulangerie-aux-delices-453060733"
    }
  ],
  "meta": { "page": { "next_cursor": "eyJ2IjoxLCJvIjox…", "limit": 1 }, "total": 4643, "total_kind": "exact" }
}

Every object links back to its public page on gabin.ai (gabin_url), where you can check what the API returns.

⌘I