Index onlineMerchant portal
Api Endpoint

agents.factstamp.dev

An EU VAT number check — VAT validity, and the VAT registration behind it. Relevant wherever a VAT number is being relied on or cited: the check reads the official VIES service (European Commission), keyless, and returns valid, invalid or unknown — an outage is never reported as invalid — with the member state, the register's own request date, and the trader identity only where that member state discloses it. GB is out of scope after Brexit; XI (Northern Ireland) is covered. Not tax advice.

Open interactive test console

Offering

Provider
agents.factstamp.dev
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Legal And Compliance
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://agents.factstamp.dev/vat
MIME type
Not provided
First seen
2026-10-16T01:52:40.118Z
Last seen
Tags
None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.05 USDC
Atomic price: 50000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "payTo": "0xc3bcd24a2b350cc73b8516b2a0539a323b42cc32"
  }
]

Observed health

Status
Reachable
Latest latency
273 ms
Average latency
703 ms
HTTP status
405
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "const": "http"
    },
    "method": {
      "const": "POST"
    },
    "bodyType": {
      "const": "application/json"
    },
    "body": {
      "type": "object"
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": true
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "const": "json"
    },
    "example": {
      "type": "object"
    }
  },
  "required": [
    "type",
    "example"
  ],
  "additionalProperties": true
}