The structural difference is not the data scope — it overlaps substantially — but how you get in. On their side: an account, a sales contact, a quotation, a key, declared IP addresses. On ours: a call, a 402 quote, a settlement. Neither is better in the abstract; they suit different situations, and you need to know which is yours.
See a real response (free) Get the quote for /v1/kyb/{siren}
Let us start there, because it is what decides half the cases — and because a comparison where the competitor never wins anything does not deserve to be read.
Surveyed on 2026-08-19, source: https://api.societe.com/pro/. Every line is verifiable by you, at the same address.
api@societe.com for commercial terms.token= parameter or an X-Authorization: socapi {token} header.402 call, a settlement in USDC or EURC, the response. No sign-up, no contract, no IP address to declare, no expiring credits. 79 routes are reachable that way.503 and cancel the payment rather than serve a degraded response. A registry snapshot that is too old also closes the route that reads it, instead of selling dead data.llms.txt, and a catalogue readable without authentication.Measured in our database on 2026-08-19: 29,922,486 company numbers and 43,896,818 establishments, 6,542,232 financial years across 1,586,046 companies, 3,402,583 detailed tax-form line items, 9,196,396 registry filings, 765,960 public contracts of which 173,633 expire within 18 months, 130,165 names across 6 official sanctions lists, 47,731 authorisations from 9 authorities, 138,020 regulated industrial sites and 2,934 sectors with statistics.
These are a dated snapshot from 2026-08-19, not a live counter. We republish them at each measurement rather than round them up.
Every fact carries its survey date and its source address, so that you can contradict it. Nothing is extrapolated: what we could not survey is marked as not surveyed rather than guessed. And every page names what the compared service does better than us — a comparison without that section is not a comparison.
If you spot an error or a fact that has become false, write to contact@sirenic.eu: we will correct the page and its survey date.
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/facturation/dossier (free sample) | $0.03 | Invoice verification and supplier verification — verify supplier before payment in France, the invoicing pack of the e-invoicing mandate France September 2026 (all VAT-liable companies must receive): legal identity, obligation dates, intra-EU VAT number checked LIVE against VIES, IBAN form + key check, bank identified, deterministic pret_a_facturer verdict, closed-list reasons. Not a payee verification: no holder name, no account existence check. A VIES outage never yields a false invalid. |
/v1/eu/recherche (free sample) | $0.003 | European company search across official registers: company lookup by name, returning European company data in one unified schema. Norway, Estonia, Latvia and Spain (BORME base, hoja key) are served from local copies; Czechia, Slovakia, Finland, Poland and Switzerland are queried live; Denmark and UK when enabled; plus worldwide GLEIF (LEI) coverage of financial entities and large groups. Top 10 matches with country, national ID, status and a score_confiance (0-1 match confidence). |
/v1/prospection (free sample) | $0.02 | French B2B prospecting and lead generation over the full official French company registry (29.8M companies): build targeted company lists with multi-criteria filters — NAF/APE activity code, departement or postal-code prefix, legal form, workforce bracket, company age, active RGE environmental certification, gender-equality index. Returns 100 active companies per page; each page is one payment. Combine filters to narrow a market segment into fresh, registry-grade company lists for France. |
The IBAN check is not a payee verification: neither the account holder's name nor the account's existence is checked (verification_titulaire: non_disponible).
Sirenic is not an accredited French e-invoicing platform (PDP), never accesses the central directory, and neither issues, transmits nor routes any invoice.
Because theirs are not public: their documentation refers you to a sales address for terms. We cannot compare a public price with a quotation we do not have, and inventing a range would be misleading.
It depends entirely on your usage: comfortable for on-the-fly enrichment, constraining for bulk processing. They offer a higher-rate option; we did not survey its terms.
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