New announcements since a date

The route to prefer when your portfolio is small and your rhythm monthly: you pay only when you ask. Past a certain acceptable detection delay, daily monitoring becomes more relevant — because it looks on the days you forget to ask.

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

What the route returns

Catalogue description, exactly as agents read it:

Company changes monitoring for a French company: the new official BODACC gazette announcements published SINCE a given date (?depuis=YYYY-MM-DD) — the poll endpoint for watchlist and portfolio surveillance. Returns the new announcements (insolvency, deregistration, sales, filings, changes) in reverse-chronological order. Note: detects new BODACC publications, not field-level edits of the Sirene/RNE profile (the monthly stock keeps no history).

Expected identifier

9-digit company number, plus the depuis=YYYY-MM-DD parameter.

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",
 "denomination": "DANONE",
 "depuis": "2020-01-01",
 "nouveaux_evenements_bodacc": {
  "nombre": 41,
  "nombre_total": 41,
  "tronque": false,
  "annonces": [
   {
    "id": "B202601212014",
    "date_parution": "2026-06-28",
    "type_avis": "Avis initial",
    "tribunal": "Greffe du Tribunal des Activités Economiques de Paris",
    "jugement": null,
    "publication": "B",
    "famille": "Modifications diverses"
   }
  ]
 },
 "changements_fiche": {
  "disponible": false,
  "version_stock_courant": "2026-07-01"
 },
 "source": "BODACC (DILA) via bodacc-datadila.opendatasoft.com, licence ouverte Etalab 2.0",
 "data_freshness": "BODACC (bulletin quotidien DILA), cache court ≤ 1 h par (siren, depuis)"
}

Price and billing

Price: $0.01. 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/changements

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

# 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

Detects new publications in the legal-notices gazette, not field-level edits of a company record: the identity stock is a monthly snapshot and keeps no history. Do not expect this route to catch a silent address change.

Neighbouring routes

• /v1/entreprise/{siren}/alertes — $0.01
• /v1/surveillance/creer — $0.05 (30 j) · $0.135 (90 j) · $0.50 (365 j) / 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

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}/changements Get notified about euro packs

Read next

• Monitoring a portfolio of customers or suppliers