# 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.

## 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](https://api.sirenic.eu/exemples/), 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](mailto:contact@sirenic.eu?subject=Euro%20credit%20packs) 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](https://api.sirenic.eu/openapi.json) and in [llms.txt](https://api.sirenic.eu/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

| Route | Price | What it returns |
| --- | --- | --- |
| `/v1/entreprise/{siren}/changements` | $0.01 | 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). |

## Take it further

- [See a real response (free)](https://api.sirenic.eu/exemples/entreprise-siren-changements.json)
- [Get the quote for /v1/entreprise/{siren}/changements](https://api.sirenic.eu/v1/entreprise/552032534/changements)
- [Get notified about euro packs](mailto:contact@sirenic.eu?subject=Euro%20credit%20packs)

## Read next

- [Monitoring a portfolio of customers or suppliers](https://api.sirenic.eu/en/use-cases/monitor-customer-portfolio-daily-alerts-signed-webhook)

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Volume figures on this page were measured in our database on 2026-08-19. They are dated snapshots, not live counters.

Full catalogue : https://api.sirenic.eu/