Querying European company registers

Every European register has its own identifier, vocabulary and gaps. Writing 15 integrations is a project; writing one that returns the same shape everywhere is the work we did. /v1/eu/entreprise/{pays}/{id} returns identity, legal form, status, creation date, head office, VAT, LEI and a register link, in a single schema.

See the reconstructed example (free) Get the quote for /v1/eu/recherche

What is available, country by country

The table below gives volumes measured in our database, each row on the date of its measurement; an identity remeasured on its own states its own date in its cell. An identity cell that says so counts either the legal persons the profile serves, or the whole copy, natural persons included. An empty cell does not mean “coming soon”: it means that country does not publish that piece in open access, or that we have not built it yet.

A dash does not mean zero. The Czech, Finnish and Swiss registers are queried live on each call: there is no identity copy to count. For Norway, accounts are queried live too, and our table keeps only a cache. For Belgium and Poland, the accounts piece is served differently (filing references, events): see the matching route pages. For Croatia, the column counts the accounts filings recorded at the register (type, period, date), never their figures. Served without identity records or accounts, hence no row here: Portugal, Spain; each of their routes has its own page.

Local copy or live query

The distinction changes what you can expect, so we publish it. The Belgian, Croatian, Cypriot, Estonian, Irish, Latvian, Lithuanian, Norwegian, Romanian and Swedish registers are served from local copies: fast, and dated. The Czech, Finnish, Polish, Slovak and Swiss registers are queried live at source: always current, and dependent on their availability. Denmark and the United Kingdom are served subject to enablement, Spain through our copy of the BORME filings (search and filings, no identity record).

Beyond those countries, coverage goes through the global Legal Entity Identifier (LEI), which yields financial entities and large groups worldwide — but not the small local company.

A stale snapshot closes the route rather than lying

This is the most important guarantee in this family, and it runs against the commercial reflex. When a local copy exceeds its age threshold, the route returns 503 and the payment is cancelled, instead of serving a dead snapshot. A frozen register answering “company active” for a business struck off weeks ago is more dangerous than no answer at all.

Not every stock is protected that way yet — some carry operational monitoring only. Each route page states which applies to the piece it describes, rather than implying uniform protection.

For sources published day by day (public procurement, UK official-journal notices, the Croatian register, commercial-court decisions), age is measured on the data itself, feed by feed: a collection that succeeds without bringing anything new refreshes nothing, and the response dates each feed.

The pieces you will not find elsewhere

• Belgian accounts: every filing reference at the Central Balance Sheet Office since 1978.
• Finnish accounts in XBRL — bearing in mind that only about 5% of Finnish limited companies file digitally; empty filings are filtered out, so every listed year genuinely carries figures.
• Danish accounts (3,981,920 rows) and Slovak ones (3,219,840), two seams rarely exposed through an API.
• Spanish register filings by sheet key (hoja).
• Directors' dealings under the EU market-abuse regulation, for issuers monitored by the Belgian and German authorities.

How you pay

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.

Open today: 150 free calls a month with an account, on 109 of 125 routes (the price list says which), and pay-per-call over x402 (USDC or EURC), with no account except registry filings. Prepaid credits: card top-up is not open yet.

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

# x402 client (npm): the 402 quote is settled and the call replayed automatically
npx x402-fetch https://api.sirenic.eu/v1/entreprise/552032534

# Or over MCP, in Claude Code / Cursor
claude mcp add --transport http sirenic https://api.sirenic.eu/mcp

# Or as a local server (stdio), with your key or an x402 wallet
claude mcp add sirenic -e SIRENIC_API_KEY=srn_live_... -- npx -y sirenic-mcp

Routes used and pricing

Frequently asked questions

Are Germany and the Netherlands covered?

Not for identity records: those two registers are explicitly out of scope for the unified search. Germany is present through another angle, the directors' dealings monitored by its market authority.

What if the foreign register is down?

For a live route, the answer is a 503 and the call is not billed. We never serve a paid degraded response.

Are national identifiers normalised?

Each country keeps its own identifier — a 10-digit enterprise number in Belgium, an 11-digit number in Latvia, the Finnish NNNNNNN-N format, and so on. Each country's route page states the expected format, because a wrong format is the leading cause of failed calls.

Take it further

No account to create, no key to request: the first step is free and shows you exactly what you would be buying.

See the reconstructed example (free) Get the quote for /v1/eu/recherche Read the route reference Create an account: 150 free calls a month

Read next

• Identifying who controls a company, without naming a natural person
• Automating business verification (KYB)

Volume figures on this page were measured in our database on 2026-08-19, 2026-09-23, 2026-09-24 and 2026-10-01, depending on the country. They are dated snapshots, not live counters. · OpenAPI · llms.txt · Full route catalogue and pricing