This is the topic where the honest answer depends entirely on the country, and where many services keep things vague. In Europe, the public availability of beneficial-ownership registers was profoundly challenged by the 2022 ruling of the Court of Justice of the European Union. As a result, what is available varies from state to state, and must be stated state by state.
See a real response (free) Get the quote for /v1/eu/entreprise/GB/{company_number}/beneficiaires-effectifs
| Country | What is available | What Sirenic serves |
|---|---|---|
| United Kingdom | Open PSC register (Companies House), Open Government Licence v3.0 | Live: individual and corporate controllers, natures of control (ownership and voting bands), notification dates, official statements. Month and year of birth only, no addresses. |
| Latvia | Open national register, CC0 open data, refreshed daily | 198,476 registered beneficial owners: name, nationality, country of residence, registration date. Never the Latvian personal identity number; birth month and year only where published. |
| France | Register closed to the public since the 2022 ruling | No register. Instead: ownership as it appears in publicly filed articles of association, extracted from the latest available deed, with a confidence level and the document reference. |
| Belgium | Register behind authorisation | None. The Belgian register is closed to unauthorised access — including for our competitors, as can be checked in their own responses, where the field comes back empty. |
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.
/v1/entreprise/{siren}/capital reads the latest publicly filed deed and extracts share capital, legal form, shareholders (name, role, birth year, ownership percentage) and notable clauses, with a confidence level and the source document reference.
A proof guard frames that extraction: a clause is served only if its keyword actually appears in the document's text. That guard is not theoretical — it was added after a non-existent pre-emption clause was produced for a real company.
Filed articles can be old and reflect only what was published: an unpublished share transfer does not appear. The document is immutable, so it is extracted once and cached. Read it as a dated exhibit, never as the current shareholding.
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/eu/entreprise/GB/{company_number}/beneficiaires-effectifs (free sample) | $0.02 | UK beneficial owners (PSC, persons with significant control) live from Companies House for AML, KYB and compliance: individual and corporate-entity PSCs with natures of control (ownership/voting bands), notification dates, plus official PSC statements. Ceased PSCs excluded by default (inclure_cesses=true adds them with their ceased date). Beyond French-registry parity — France exposes no open UBO register. Month+year of birth only, no addresses. Open Government Licence v3.0 (Companies House). |
/v1/eu/entreprise/LV/{regnr}/beneficiaires-effectifs (free sample) | $0.02 | Latvian beneficial owners (patiesie labuma guvēji) from the official Uzņēmumu reģistrs open data (CC0, refreshed daily), for AML, KYB and compliance ownership checks: registered UBOs in Latvia with name, nationality, country of residence and registration date — an open national UBO register, depth France does not expose. GDPR minimisation: never the Latvian personal identity number, birth month+year only when published. 11-digit registration number. |
/v1/entreprise/{siren}/capital (free sample) | $0.35 | Ownership and share capital structure of a French company from the official INPI registry: AI extraction of the latest PUBLIC articles of association filed at INPI — share capital amount, legal form, shareholders (name, role, birth YEAR, ownership %), notable clauses, with a confidence level and the source document reference. Due diligence from public filed deeds — NOT a beneficial-ownership register (RBE) and not a beneficial-owner identification. Immutable document: extracted once, cached. |
The ownership data served for France is not a beneficial-ownership register and does not replace one: the French register has not been publicly accessible since the 2022 ruling of the Court of Justice of the European Union. What is served comes from publicly filed deeds.
Because it is no longer public. Serving it would require an authorisation we do not hold, or a source of doubtful legality. We prefer a stated absence to a field filled without a basis.
Not by default. Add inclure_cesses=true to get them, with their cessation date — useful to reconstruct a past ownership chain.
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/eu/entreprise/GB/{company_number}/beneficiaires-effectifs Read the route reference Get notified about euro packs