One company, one identifier — but as many establishments as locations, each with its own establishment identifier and its own activity. This is the route to call to invoice the right establishment, or to know whether a supplier really has a presence in your region.
See a real response (free) Get the quote for /v1/entreprise/{siren}/etablissements
Catalogue description, exactly as agents read it:
All establishments (SIRET) of a French company: the complete list of business locations registered under one SIREN, official data from the French company registry (INSEE Sirene), head office and branches alike, each with its address and open or closed status. Use it to map the branches and addresses of a company across France, or to check whether a given SIRET is still open. The SIREN identifies the legal entity; the SIRET identifies each of its establishments.
9-digit company number. Establishment identifiers are returned in the response.
A wrongly formatted identifier returns 400 and is not billed — but it costs you a round trip. It is the leading cause of failed calls on the foreign routes.
Dated snapshot from 2026-07-29, truncated to one item per array. It is not live data. The full extract is served free of charge from the samples surface, and the schema from the OpenAPI document.
{
"siren": "552032534",
"denomination": "DANONE",
"nombre_etablissements": 19,
"etablissements": [
{
"siret": "55203253400703",
"est_siege": true,
"adresse": "59 RUE LA FAYETTE 75009 PARIS",
"code_postal": "75009",
"commune": "PARIS",
"etat_administratif": "actif",
"activite_principale": "70.10Z",
"date_creation": "2025-08-19",
"date_fermeture": null,
"enseignes": [],
"tranche_effectif_salarie": "NN"
}
],
"source": "INSEE Sirene / INPI RNE via recherche-entreprises.api.gouv.fr, licence ouverte Etalab 2.0",
"disclaimer": "Données issues de l'open data, fournies en l'état sans garantie. / Open data, provided as is without warranty.",
"data_freshness": "stock Sirene mensuel (2026-07-01), dirigeants temps réel"
}Price: $0.003. The authoritative amount is the one in the 402 quote returned by the route itself — not this text, which derives from the same grid but is still just a page.
An error response cancels the payment: a 400, 404 or 503 is never billed. An upstream outage closes the route with a 503 rather than serving a degraded response.
# 1. Le devis, sans rien payer : la route répond 402 avec son montant
curl -i https://api.sirenic.eu/v1/entreprise/552032534/etablissements
# 2. L'appel réglé — le client x402 paie le devis et rejoue la requête
npx x402-fetch https://api.sirenic.eu/v1/entreprise/552032534/etablissements
# 3. Ou en MCP, dans Claude Code / Cursor / un agent
claude mcp add --transport http sirenic https://api.sirenic.eu/mcp/v1/entreprise/{siren} — $0.005/v1/entreprise/{siren}/facturation-prep — $0.02Every route is paid per call, in USDC or EURC on the Base network, over the x402 protocol: no account to create, no API key, no subscription. The first call returns a 402 quote your client settles, then replays the call. A failed call is never billed.
Would you rather have a euro invoice and prepaid credits? That is in preparation, and we will not announce a date until it is open. Write to contact@sirenic.eu and we will let you know when it opens.
Paid responses are Ed25519-signed: you can later prove what was served to you, and when. The whole catalogue is free to read in the OpenAPI document and in llms.txt.
One call, end to end
# Client x402 (npm) — le devis 402 est réglé et l'appel rejoué automatiquement
npx x402-fetch https://api.sirenic.eu/v1/entreprise/552032534
# Ou en MCP, dans Claude Code / Cursor
claude mcp add --transport http sirenic https://api.sirenic.eu/mcp| Route | Price | What it returns |
|---|---|---|
/v1/entreprise/{siren}/etablissements (free sample) | $0.003 | All establishments (SIRET) of a French company: the complete list of business locations registered under one SIREN, official data from the French company registry (INSEE Sirene), head office and branches alike, each with its address and open or closed status. Use it to map the branches and addresses of a company across France, or to check whether a given SIRET is still open. The SIREN identifies the legal entity; the SIRET identifies each of its establishments. |
No account to create, no key to request: the first step is free and shows you exactly what you would be buying.
See a real response (free) Get the quote for /v1/entreprise/{siren}/etablissements Get notified about euro packs