French company lookup API: SIREN, SIRET and Sirene register

$0.01 per call · failed calls are never charged · no account or subscription: pay per call with a card key or USDC

French company by SIREN (552032534), SIRET or VAT number (FR27552032534), or by name, live from the State's company search API (INSEE Sirene and the RNE): name, acronym, legal form, active or ceased, creation date, NAF industry code, workforce band, company size category, establishments, head office address, VAT number. Use to verify a French customer or supplier. Register facts only, not a credit report.

When to use it

Verify a French customer or supplier by SIREN, SIRET or VAT number
Find a company's SIREN from its name, narrowed to a town
See whether a company is active or ceased, its legal form, size and head office

Run it free (3 free calls) Buy credits by card (from $1) Example result (JSON)

Inputs

Name	Type	Description
`siren`	string	SIREN (9 digits), SIRET (14 digits) or French VAT number FR… (give siren or name)
`name`	string	Company name to search for, instead of siren: up to 10 active companies
`city`	string	With name: only companies whose head office is in this town
`limit`	integer	Matches for a name search (1-10, default 5)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/fr/company?siren=552032534"

Or one of your 3 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/fr/company?siren=552032534&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "siren": "552032534",
  "siret": "55203253400703",
  "vatNumber": "FR27552032534",
  "name": "DANONE",
  "acronym": null,
  "legalForm": {
    "code": "5599",
    "name": "SA à conseil d'administration"
  },
  "status": "active",
  "ceased": null,
  "founded": "1955-01-01",
  "industry": {
    "naf": "70.10Z",
    "section": "M"
  },
  "employees": {
    "band": "1,000-1,999",
    "year": "2024"
  },
  "employer": true,
  "category": "large company (GE)",
  "establishments": {
    "open": 3,
    "total": 19
  },
  "flags": [],
  "headOffice": {
    "address": "59-61 RUE LA FAYETTE 75009 PARIS",
    "postcode": "75009",
    "city": "PARIS",
    "country": "FR"
  },
  "source": "API Recherche d'entreprises (INSEE Sirene and INPI RNE), Licence Ouverte 2.0",
  "note": "Register facts only. This is not a credit report, credit score or rating."
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is fr_company, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

Questions

Where does the data come from?

The French State's company search API (INSEE Sirene and the RNE), read live under the Licence Ouverte.

Is this a credit report?

No. It shows register facts only: no score, rating or opinion. Sole traders are not shown.

How do I pay?

Each successful call costs $0.01; failed calls are not charged. The first 3 calls are free (25 through an MCP client). Then pay with card credits (from $1; the key goes in an Authorization header or, for clients that can only fetch a URL, as api_key= in the URL) or per call in USDC over x402 or MPP. No account is needed.