API for everything that changed at a company since a date

GET/v1/entreprise/{siren}/nouveautes

Price: $0.05
Free quota: Included
Family: Alerts and monitoring

Parameters
Parameter	Where	Example
`siren`	path · required	`552032534`
`depuis`	query · required	`2026-07-01`

What is charged

200Ed25519-signed response, charged at the route's price
402Signed x402 quote, nothing is debited
4xxUnknown or invalid identifier, never charged
5xxUpstream source unavailable, or a counted total below the list read (compte_incoherent), never charged

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

curlx402MCPPythonJS

curl "https://api.sirenic.eu/v1/entreprise/552032534/nouveautes?depuis=2026-07-01" \
  -H "X-Api-Key: $SIRENIC_KEY"

# 1. The quote, without paying anything: the route answers 402 with its amount
curl -i "https://api.sirenic.eu/v1/entreprise/552032534/nouveautes?depuis=2026-07-01"

# 2. The paid call: the x402 client settles the quote and replays the request
npx x402-fetch "https://api.sirenic.eu/v1/entreprise/552032534/nouveautes?depuis=2026-07-01"

# Or over MCP, in Claude Code / Cursor / an agent
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

import os, requests

r = requests.get(
    "https://api.sirenic.eu/v1/entreprise/552032534/nouveautes?depuis=2026-07-01",
    headers={"X-Api-Key": os.environ["SIRENIC_KEY"]},
)
print(r.json())

const r = await fetch("https://api.sirenic.eu/v1/entreprise/552032534/nouveautes?depuis=2026-07-01", {
  headers: { "X-Api-Key": process.env.SIRENIC_KEY },
});
console.log(await r.json());

200 OK · extractx-credits-charged: 0.05

{
 "siren": "552032534",
 "denomination": "DANONE",
 "depuis": "2026-07-01",
 "verdict": "nouveautes",
 "nouveautes": [
  {
   "type": "modification",
   "date": "2026-09-02",
   "date_nature": "parution_bodacc",
   "date_evenement": null,
   "bloc": "bodacc",
   "source": "bodacc_dila",
   "reference": "B202601671193",
   "detail": {
    "famille": "modification",
    "type_avis": "Avis initial",
    "tribunal": "Greffe du Tribunal des Activités Economiques de Paris",
    "bulletin": "B",
    "role": "sujet"
   }
  }
 ],
 "totaux_par_type": {
  "modification": 1
 },
 "listes_bornees": {
  "nouveautes": {
   "nombre_total": 1,
   "tronque": false
  }
 },
 "dates_futures_ecartees": 0,
 "blocs": [
  {
   "bloc": "bodacc",
   "source_code": "bodacc_dila",
   "etat": "servi",
   "datation": "datee",
   "date_photo": "2026-10-07",
   "couverture_jusqu_au": "2026-10-07",
   "couverture": {
    "etat": "complete",
    "mesure": "toutes les annonces BODACC qui citent le SIREN, publiées depuis la date demandée / all BODACC notices citing the SIREN published since the requested date"
   },
   "consulte_le": "2026-10-07T22:28:16.157Z",
   "nombre_total": 1,
   "nombre_servi": 1,
   "lecture_complete": true,
   "dates_futures_ecartees": 0,
   "faits_non_dates": [],
   "route": "/v1/entreprise/{siren}/changements"
  }
 ],
 "hors_moteur": [
  {
   "bloc": "recrutement",
   "motif": "photo_sans_historique",
   "route": "/v1/entreprise/{siren}/emploi"
  },
  {
   "bloc": "dirigeants",
   "motif": "aucun_historique_conserve",
   "route": "/v1/entreprise/{siren}"
  },
  {
   "bloc": "tranche
…

Dated snapshot from 2026-10-07, truncated to one item per array and then cut for length. It is not live data. The full extract is served free of charge from the samples surface, and the schema from the OpenAPI document.

Full real response ↗

What the route returns

Catalogue description, exactly as agents read it:

What changed at a French company since a date (?depuis=YYYY-MM-DD), every official block in one call: BODACC notices (insolvency, sales, accounts filings with their figures), commercial-court decisions, public contracts (DECP, TED), establishments, cessation, licences, dated sanctions listings, trademarks and patents, RGE, lobbying register. Dated at publication, event date alongside; verdict nouveautes, rien_de_nouveau or lecture_incomplete; 100 most recent.

Expected identifier

9-digit company number, plus the depuis=YYYY-MM-DD parameter (a past day or today).

A wrongly formatted identifier in the path 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. A search parameter, by contrast, is cleaned up: unsupported characters are stripped and the usable query is served.

Price and billing

Price: $0.05. 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.

What this route does not do

Hiring, officers and headcount band are outside the engine: no history of them is kept, and the response says so with the route that serves them. Monthly stocks (Sirene, French public contracts) see nothing after their snapshot: for a more recent date, the response says lecture_incomplete and names those blocks, never rien_de_nouveau. A sole proprietorship is not covered (refused, never charged).

Neighbouring routes

/v1/entreprise/{siren}/changements: $0.01
/v1/surveillance/creer: $0.05 (30 days) · $0.135 (90 days) · $0.50 (365 days) / entity

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 106 of 122 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

Route	Price	Sample	What it returns
`/v1/entreprise/{siren}/nouveautes`	$0.05	free sample	What changed at a French company since a date (?depuis=YYYY-MM-DD), every official block in one call: BODACC notices (insolvency, sales, accounts filings with their figures), commercial-court decisions, public contracts (DECP, TED), establishments, cessation, licences, dated sanctions listings, trademarks and patents, RGE, lobbying register. Dated at publication, event date alongside; verdict nouveautes, rien_de_nouveau or lecture_incomplete; 100 most recent.

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}/nouveautes Create an account: 150 free calls a month

Everything that changed since a date