A business-verification file is judged less on what it contains than on what it proves. /v1/kyb/{siren} returns six blocks in one call, and each declares which official registry it came from and as of which date. That per-block provenance is what lets you reconstruct a file months later, in front of an auditor, without having to take a vendor's word for it.
See a real response (free) Get the quote for /v1/kyb/{siren}
Screening covers the officers too, not just the company. That is almost always where the signal is: a sanctioned individual rarely runs a company that is itself listed.
/v1/kyb/batch takes 2 to 100 company numbers and returns the same file for each, at the batch unit price — cheaper than the single-call price. The quote is computed from the number of company numbers passed and frozen before settlement.
A company number with no publicly listed company comes back as trouve=false and counts as one lookup. The response does not hide its gaps, which is the only way to know what still needs manual work.
The file draws on 29,922,486 company numbers, 43,896,818 establishments, 9,196,396 registry filings, 6,542,232 financial years and 130,165 names across 6 official sanctions lists.
For France, Sirenic exposes no beneficial-ownership register: it has not been publicly accessible since the 2022 ruling of the Court of Justice of the European Union. What we serve is ownership as it appears in publicly filed deeds (articles of association), with a confidence level and the source document reference. That is not a beneficial-ownership register and does not replace one.
Every 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/kyb/{siren} (free sample) | $0.15 | Company lookup KYB — Know Your Business verification of a French company in one call: official company data for due diligence, compliance and customer onboarding: identity, officers, BODACC legal alerts (insolvency, deregistration), filed financials, sanctions screening of the company and each officer against the 6 official lists, computed VAT number and a completeness score. Per-block provenance: every block states its official register and as-of date. |
/v1/kyb/batch (free sample) | $0.105 / entité | Batch KYB and bulk company lookup: full Know Your Business files for 2 to 100 French companies in one call (comma-separated sirens parameter) — bulk due diligence, compliance and onboarding screening of a whole portfolio, each file with per-block provenance (official register + as-of date). Billed per company at $0.105 (30% off the $0.15 unit price); the amount is quoted from the number of SIREN. A SIREN with no diffusible company is returned as trouve=false and billed as one lookup. |
/v1/sanctions/check (free sample) | $0.02 | Sanctions screening (AML/KYC): screen a person or company name against 6 official watchlist sources — UN consolidated, EU FSF, US OFAC SDN, UK Sanctions List, French national asset-freeze register, Swiss SECO list — six official lists in one call. Fuzzy watchlist matching with a 0-100 confidence score per hit — never a bare yes/no. Each list reports its entry count, publication date and what that date means. One AML screening call covers UN, EU, OFAC, UK, FR and CH. |
/v1/entreprise/{siren}/dossier (free sample) | $0.005 | Full French company file in ONE call: identity is the base, then add the blocks you want and pay only for those — etablissements, alertes_bodacc, finances, marches_publics, marches_publics_ue, lobbying, risques_industriels, agrements, pi, documents, facturation_prep, score. Example: blocs=finances,pi,score on siren 552032534. Each block costs what its own endpoint costs, total capped at $0.35. A block that cannot be served is NAMED with its reason: no data, not disclosable, or upstream outage. |
Screening never returns a bare yes/no: every hit carries a 0-to-100 confidence score. Politically exposed persons are not served.
Not for France: the register has not been public since 2022. For the United Kingdom and Latvia, yes — both expose an open register, and we serve it. For France, the available route is ownership from filed articles of association, with its limits stated.
It says how much of the file could be filled from official sources. A low score is not a risk signal: very often it is simply a company that files no accounts, which is legal and common. It tells you where your analyst should look, not how to rate the company.
As a timestamped, traceable official information source, yes. It does not replace your own obligations: as the regulated entity, you carry the risk assessment and the onboarding decision.
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/kyb/{siren} Read the route reference Get notified about euro packs