SIRET Lookup for WooCommerce — check the SIRET or SIREN at the checkout

SIRET Lookup for WooCommerce adds a “SIRET or SIREN number” field to the WooCommerce checkout (classic and block) and checks the number against the French Sirene register through the open API Recherche d’entreprises (Annuaire des Entreprises): the company name and status appear under the field and an unknown number stops the order. No account and no key are needed. We found no plugin on wordpress.org that does this check at the checkout.

We did work with this API live: the check without a key against the open service and the search by name passed.

What the free version does

The buyer types a SIRET (14 digits) or a SIREN (9 digits); the Luhn check digit is verified before any request, so typing errors are caught without asking the register. When the field loses focus “name — Active” appears under it. When the order is placed the number is checked again: an unknown number stops the order (this can be switched off). Number, name, status, the address of the establishment and the French VAT number computed from the SIREN are kept on the order and shown in a box on the order page. The field is optional or required and its label is yours. A failure or a busy register does not block the order: a note says the number was not verified. Answers are kept for 12 hours.

What Pro adds

Search by name (the search uses the same open API): the buyer types a name and picks the company, and the SIRET of its head office is filled in. Autofill of the empty billing fields (name, address of the establishment). Refusal of ceased companies and closed establishments. The “register unavailable” switch, a “Check again” button on the order page and a check before shipping: when the order goes to Processing the register is asked once more and an order whose company has ceased is put on hold.

How it works, step by step

1. WooCommerce → SIRET: press “Check connection” (no key is needed).
2. Open the checkout: the “SIRET or SIREN number” field is there. Try 356 000 000 00048.
3. Decide whether the field is required and whether unknown numbers are refused.
4. Place one test order with a number and look at the box on the order page.

Under the hood

• The browser talks to the shop, not to the register; answers are kept for 12 hours; the checkout calls are throttled per address.
• HPOS and block checkout compatible; languages: English, français.

How to install

1. Plugins → Add New → Upload Plugin: choose the zip and activate it.
2. WooCommerce → SIRET: no key needed.
3. Enter the service credentials and test the connection.
4. Try one test order before you switch the automation on.

The module is not on wordpress.org yet: the free version and Pro are one archive from this page. Without a key it works as the free version.