Sentinelle, monitoring for your clients and suppliers
TierSafe watches your clients and suppliers across official sources and alerts you: insolvency proceeding, change of director, closure, invalid VAT number, deregistered platform. From €119 excl. VAT per year for 100 third parties.
Monitor your own company and 10 third parties for free, no subscription: immediate alert on your company, and on your third parties as soon as a director changes or a proven risk appears.
Why monitoring
A verification tells where you stood on the day of the file. A client can be placed in receivership, a registered platform can be deregistered, a VAT number can become invalid: the following week.
Monitoring re-reads, every day, the official sources that changed, over the list of third parties you maintain: your clients, your suppliers, or both.
Example
Every change says what changed, according to which source, published when: enough to decide without redoing the investigation.
Critical Insolvency proceeding
Judgment opening a receivership proceeding, published in the BODACC on 23 September 2026.
Watches
A published change opens a period during which some requests from a third party must be checked differently. The third party's record then carries a badge, with the dated reason, the end date and what to do.
Watches are included in every plan, free monitoring included. They describe a period prone to fraud, never a suspicious company.
Sentinelle Free
Any account with a confirmed email address monitors its own company and 10 third parties for free.
Monitoring
Monitoring reads official public sources, never paid databases or approximate rebuilds.
| What is watched | How often |
|---|---|
| Insolvency proceedings opened: safeguard, receivership, liquidation | daily |
| Change of director, head office move, new name, dissolution: the signal of Kbis fraud | daily |
| Cessation of activity, reactivation, closure of a monitored establishment | monthly |
| Intra-EU VAT number that became invalid, or valid again | daily |
| Third party's approved platform deregistered, or newly registered | daily |
| Third party now reachable for e-invoices, change of receiving operator | daily |
| E-invoicing address of each third party: you know where to deliver your invoices | collected for each third party, with its date |
Monitoring starts from your identifiers (SIREN, SIRET, VAT number) and serves no other purpose: no resale, no cross-use.
How it works
A CSV, Excel or JSON file: one client reference and one SIREN, SIRET or VAT number per line. A preview shows what will change before anything is written. Or push it by API from your tool.
Every day, the engine queries the sources that changed and compares them with the known state of each record. Without a subscription, your own company and your first ten records are monitored for free, and the first pass of the others gives the last twelve months review.
Immediate alert for confirmed risks, Monday recap, monthly report. Every event can be read, acknowledged and exported.
Pricing
Yearly, no tacit renewal. The first pass is included, with the detail of every record and the event feed.
| Tier | Monitored records | Per year | Monthly equivalent |
|---|---|---|---|
| Sentinelle 100 | 100 | €119 excl. VAT per year | i.e. €9.92 per month |
| Sentinelle 500 | 500 | €390 excl. VAT per year | i.e. €32.50 per month |
| Sentinelle 1,000 | 1,000 | €480 excl. VAT per year | i.e. €40 per month |
| Sentinelle 2,000 | 2,000 | €890 excl. VAT per year | i.e. €74.17 per month |
| Sentinelle 5,000 | 5,000 | €1,990 excl. VAT per year | i.e. €165.83 per month |
| Sentinelle 10,000 | 10,000 | €2,990 excl. VAT per year | i.e. €249.17 per month |
Free rotation up to a quarter of the tier per month (25 %); beyond that, each new entry costs one credit.
Credits or Sentinelle
The two go together: the check puts a file in order, monitoring keeps it in order.
| Criterion | One-off check (credits) | Sentinelle (subscription) |
|---|---|---|
| What you buy | The check of one file, on the upload date | Continuous monitoring of a list of third parties |
| What triggers a check | You upload a file | An official source publishes a change |
| What you get | A report and a corrected file | Dated and sourced alerts, a digest every Monday, a monthly report |
| Price | Credits, with no subscription and no expiry date | A yearly subscription, from €119 excl. VAT |
| Integration | CSV, Excel or JSON file | File, push API and signed webhooks |
| Best for | Cleaning a database before the reform or a migration | Staying up to date afterwards, without re-running a file |
API
An API is part of the offer: create a token from the Sentinelle area and push your third parties from your tool; the detail of every record, the event feed and acknowledgements require an active subscription.
Push a batch of records in one request (merge or sync mode): the same rules as a file import, the result detailed in the response, the credit debit announced, and a preview available without writing anything.
As a subscriber, read the event feed, the state of every record, and acknowledge from your application.
And the other way round: declare a webhook address, every event reaches it as soon as it is detected, signed so your server can check where it comes from, retried for three days if your server does not answer.
curl -X POST -H "Authorization: Bearer ts_..." -H "Content-Type: application/json" \
-d '{"mode": "merge", "companies": [
{"reference": "C0001", "name": "DANONE", "siren": "552032534"}
]}' https://tiersafe.eu/api/v1/monitoring/companiesPOST https://erp.example.com/tiersafe/webhook
TierSafe-Event: monitoring.event.detected
TierSafe-Signature: t=1790563800,v1=6d2b0f9c...a41e
{"type": "monitoring.event.detected", "data": {"event": {
"type": "proceeding", "severity": "critical", "company_reference": "C0001"}}}
Who is behind TierSafe
TierSafe is built and run by Adrien CHAUMARAT, in the Ardennes, and we answer the phone. Your data is hosted in France, encrypted, and never sold. Get to know us
Frequently asked questions
Credits pay for a one-off verification: one file, one pass, one report. Monitoring continuously watches a list of third parties you maintain: every change is dated, sourced and kept, so you learn on the day it happens rather than when you invoice.
Yes, up to a quarter of the tier per month, plus freed slots. Beyond that, each new entry costs one credit: monitoring watches a portfolio, not a cheap bulk verification.
A change is only retained from complete, versioned sources: nothing is compared while a register is being rebuilt, a disappearance is confirmed only after two versions of the source, a non-distributable name is never a name change, and a negative Peppol answer never retires a reachable recipient.
The subscription is yearly, with no tacit renewal: it ends on its due date. The first ten records then stay monitored for free; the others are kept for 90 days so you can come back without re-importing everything, then deleted.
Yes. From the Sentinelle area, create a token and push your third parties by API from your ERP or a script, with the same rotation rules as with a file. As a subscriber, also read the state of every record and the event feed, acknowledge, and receive every event by webhook. Without a subscription, pushing still prepares the portfolio but the detail stays hidden.
The list of third parties serves monitoring only: it is kept during the subscription and then for 90 days, and is never resold or cross-used. Details in the privacy policy.
Yes, as a subscriber, by webhook: declare up to three HTTPS addresses in the Sentinelle area, every event is sent there as soon as it is detected, signed (HMAC-SHA256) so your server can check it really comes from TierSafe. Without an answer, the delivery is retried for about three days. The public API documentation details the format and gives verification examples in PHP, Node.js and Python.
Partly, with no subscription: your own company and 10 third parties are monitored for free, watches included. You receive an email alert as soon as a change concerning your company is detected and, for your third parties, as soon as a director changes or a proven risk appears; the rest arrives in a digest every Monday. The subscription adds your whole portfolio, the monthly report, export, reading through the API and webhooks.
Periods during which a request from a third party must be checked differently: the bank details watch before accepting new bank details, the invoicing watch when an invoice arrives through a new channel, the orders watch before shipping on credit, and the claim to file after an opening judgment. They open on published changes (new director, head office transfer, insolvency proceeding...) and are included in every plan, free monitoring included. They describe a period, never a suspicious company.
Further reading: Veille des clients et fournisseurs : garder à jour une base tiers après l'avoir nettoyée · Fraude au changement de RIB : comment vérifier l'IBAN d'un fournisseur · Fraude au Kbis : repérer une identité détournée chez vos fournisseurs