This is the gateway to everything else: without a company number, no other route can work. The useful particularity here is the 0-to-1 confidence score: for a name like “Martin”, ten companies answer, and it is that score that tells you which one you meant.
See a real response (free) Get the quote for /v1/recherche
Catalogue description, exactly as agents read it:
French company search and company lookup by name or SIREN in the official French company registry (INSEE Sirene / INPI RNE open data). Name search returns the top 10 matches with identity, SIREN, NAF code, city and active/ceased status, plus a score_confiance (0-1 match confidence) that helps disambiguate homonyms. The entry point to official data and company data on France: resolve a trading name to its SIREN identifier before pulling the full company profile, filings or financials.
No identifier: a free-text query parameter. A 9-digit company number is also accepted and returns the matching company.
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.
{
"total_results": 10,
"resultats": [
{
"siren": "552032534",
"denomination": "DANONE",
"statut_diffusion": "totale",
"etat_administratif": "actif",
"activite_principale": "70.10Z",
"commune_siege": "PARIS",
"code_postal_siege": "75009",
"score_confiance": 1
}
],
"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: $0.001. 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/recherche
# 2. L'appel réglé — le client x402 paie le devis et rejoue la requête
npx x402-fetch https://api.sirenic.eu/v1/recherche
# 3. Ou en MCP, dans Claude Code / Cursor / un agent
claude mcp add --transport http sirenic https://api.sirenic.eu/mcpIf your only need is resolving a name to an identifier, a free public API does it just as well — we say so in our comparison. Pay for this route when you chain, in the same transaction, into what that free API does not serve.
/v1/entreprise/{siren} — $0.005/v1/prospection — $0.02/v1/dirigeant/recherche — $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/recherche (free sample) | $0.001 | French company search and company lookup by name or SIREN in the official French company registry (INSEE Sirene / INPI RNE open data). Name search returns the top 10 matches with identity, SIREN, NAF code, city and active/ceased status, plus a score_confiance (0-1 match confidence) that helps disambiguate homonyms. The entry point to official data and company data on France: resolve a trading name to its SIREN identifier before pulling the full company profile, filings or financials. |
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/recherche Get notified about euro packs