---
title: "Validate one EU EORI number (EC EOS)"
method: GET
path: "/eori"
tags: ["EORI"]
---

# Validate one EU EORI number (EC EOS)

`GET /eori`

## Request

- Base URL: `https://api.wsystem.dev`
- URL: `https://api.wsystem.dev/eori`
- Auth: none declared

Check an EU EORI (Economic Operators Registration and Identification) number such as SE5560360793 against the official European Commission EOS service. Returns valid/invalid and name/address when the trader consented to publication. Note: GB EORIs are validated by HMRC, not EOS. x402 $0.01.

## Query parameters

- `eori` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `402`: Payment Required: x402 v2 challenge (PAYMENT-REQUIRED header). Returned when the free tier is used up, or for a bare call without input.
- `422`: Validation Error
- `429`: Free tier used up and x402 disabled

---

[API](https://skmtc.dev/wsystem/apis/w-system-eu-business-data-api-vat-vies-eori-company-registry.md) · [All operations](https://skmtc.dev/wsystem/apis/w-system-eu-business-data-api-vat-vies-eori-company-registry/llms.txt) · [OpenAPI document](https://skmtc.dev/wsystem/apis/w-system-eu-business-data-api-vat-vies-eori-company-registry/revisions/ab39146b346f?raw)