Preparing a compliant e-invoice

What blocks an e-invoicing project is almost never the software: it is a master file with wrong company numbers and stale legal names. This route serves to prepare, not to issue — the distinction is regulatory, not rhetorical.

See a real response (free) Get the quote for /v1/entreprise/{siren}/facturation-prep

What the route returns

Catalogue description, exactly as agents read it:

Supplier onboarding: PREPARE a compliant French e-invoice under the e-invoicing mandate France September 2026 (reception obligatory for every VAT-liable company; issuance phased GE/ETI 2026, SME 2027): legal name & form, status, computed intra-EU VAT number (with VIES pointer), establishments (SIRET) with addresses, NAF code, indicative obligation dates. Preparation only - Sirenic is not an accredited platform (PDP), never accesses the central directory and never issues or routes invoices.

Expected identifier

9-digit company number.

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.

Extract from a genuinely paid response

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.

{
 "siren": "552032534",
 "statut_diffusion": "totale",
 "destinataire": {
  "denomination": "DANONE",
  "nature_juridique": "5599",
  "etat_administratif": "actif",
  "activite_principale": "70.10Z",
  "categorie_entreprise": "GE"
 },
 "tva": {
  "numero_intracommunautaire_calcule": "FR27552032534"
 },
 "adressage": {
  "siege": {
   "siret": "55203253400703",
   "adresse": "59 RUE LA FAYETTE 75009 PARIS",
   "code_postal": "75009",
   "commune": "PARIS"
  },
  "nombre_etablissements": 19,
  "etablissements": [
   {
    "siret": "55203253400703",
    "est_siege": true,
    "adresse": "59 RUE LA FAYETTE 75009 PARIS",
    "etat_administratif": "actif"
   }
  ]
 },
 "calendrier_reforme": {
  "reception_obligatoire_depuis": "2026-09-01",
  "emission_obligatoire_depuis": "2026-09-01",
  "base_calcul": "catégorie d'entreprise INSEE : GE"
 },
 "avertissements": [],
 "data_freshness": "identité : stock Sirene mensuel (2026-07-01)",
 "disclaimer": "Données de préparation fournies à titre indicatif ; Sirenic n'émet, ne transmet ni ne route aucune facture, et ne confirme pas l'enregistrement du destinataire sur le PPF ou une PDP."
}

Price and billing

Price: $0.02. 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.

Calling the route

# 1. Le devis, sans rien payer : la route répond 402 avec son montant
curl -i https://api.sirenic.eu/v1/entreprise/552032534/facturation-prep

# 2. L'appel réglé — le client x402 paie le devis et rejoue la requête
npx x402-fetch https://api.sirenic.eu/v1/entreprise/552032534/facturation-prep

# 3. Ou en MCP, dans Claude Code / Cursor / un agent
claude mcp add --transport http sirenic https://api.sirenic.eu/mcp

What this route does not do

Preparation only. Sirenic is not an accredited platform, never accesses the central directory, and neither issues nor routes any invoice. The obligation dates served are indicative.

Neighbouring routes

• /v1/facturation/dossier — $0.03
• /v1/entreprise/{siren}/etablissements — $0.003
• /v1/kyb/batch — $0.105 / entité

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.

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

Routes used and pricing

Sirenic is not an accredited French e-invoicing platform (PDP), never accesses the central directory, and neither issues, transmits nor routes any invoice.

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 a real response (free) Get the quote for /v1/entreprise/{siren}/facturation-prep Get notified about euro packs

Read next

• Preparing supplier master data for the French e-invoicing mandate