Kyb Check
by Factline in Security & trust
KYB company verification for Europe in one call: register, directors and owners, sanctions, PEP, VAT, insolvency. Use before onboarding, paying or contracting a European company: finds it in 10 official registers (GLEIF, UK, IE, FR, NO, FI, CZ, SK, EE, PL), screens it and its directors and owners (UK, FR, NO) against EU, UN, UK and US sanctions and PEP, checks the VAT number, flags new websites and Dutch bankruptcies. One verdict: pass, review, block_review or incomplete. Input: name or id,...
GET https://factline.dev/v1/kyb/check
Last 30 days
Status and outage history · Atom feed
- Uptime
- 100%
- Response time
- 270 ms typical, 495 ms slowest 5%
- Last check
- 3 h ago
- Next check
- any minute now
How to call it
GET https://factline.dev/v1/kyb/check
Each call costs $0.05 in USDC on Base, paid with the request over x402.
Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.
Example request
From the listing.
GET https://factline.dev/v1/kyb/check?country=IE&name=Google+Ireland&vat=IE6388047VParameters
| Parameter | Type | Required | Description |
|---|---|---|---|
country | string | No | ISO country of the company, e.g. NL, GB, IE, FR (improves the match) |
domain | string | No | Optional company website or email domain: flags very new or missing domains |
id | string | No | Or a company number: LEI, UK company number, Irish CRO, French SIREN, Norwegian org number, Finnish business ID, Czech/Slovak ICO, Polish NIP, Estonian registry code |
kvk | string | No | Optional Dutch KvK number: adds a bankruptcy check (found automatically for Dutch companies with an LEI) |
name | string | No | Company name, e.g. ASML Holding |
vat | string | No | Optional EU VAT number: checked in VIES and matched to the registered name |
Example response
The provider's example. We can't check it without paying.
Example response, 48 lines
{
"checks": {
"domain": "not requested (send domain)",
"insolvency": "Dutch companies only",
"register": {
"source": "CRO open data, licensed under CC BY 4.0",
"status": "ok"
},
"sanctions": {
"result": {
"matches": [],
"possible_match": false
},
"status": "ok"
},
"vat": {
"result": {
"name": "GOOGLE IRELAND LIMITED",
"valid": true,
"vat_number": "IE6388047V"
},
"status": "ok"
}
},
"company": {
"address": "GORDON HOUSE, BARROW STREET, DUBLIN 4, D04E5W5",
"country": "IE",
"incorporated": "2003-02-28",
"legal_form": "LTD - Private Company Limited by Shares",
"lei": null,
"name": "GOOGLE IRELAND LIMITED",
"registry": "Companies Registration Office (Ireland)",
"registry_id": "368047",
"status": "active"
},
"flags": [],
"other_matches": [
{
"country": "IE",
"name": "GOOGLE IRELAND HOLDINGS UNLIMITED COMPANY",
"registry_id": "369511",
"status": "active"
}
],
"source": "Official company registers (see checks.register.source); EU, UN, UK and US sanctions lists; EU VIES; RDAP and DNS; Dutch Centraal Insolventieregister",
"summary": "GOOGLE IRELAND LIMITED (active, Companies Registration Office (Ireland) 368047): verdict pass, nothing flagged.",
"verdict": "pass"
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.05.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://factline.dev/v1/kyb/check?country=IE&name=Google+Ireland&vat=IE6388047V'
# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://factline.dev/v1/kyb/check?country=IE&name=Google+Ireland&vat=IE6388047V' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
// Pays at most $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffactline.dev%2Fv1%2Fkyb%2Fcheck
const res = await pay("https://factline.dev/v1/kyb/check?country=IE&name=Google+Ireland&vat=IE6388047V");
console.log(res.status, await res.text());Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client
# Pays at most $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.get("https://factline.dev/v1/kyb/check?country=IE&name=Google+Ireland&vat=IE6388047V")
print(res.status_code, res.text)Security scan
- No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 3 h ago | Passed | 402 | 270 ms | $0.05 |
| 7 h ago | Passed | 402 | 214 ms | $0.05 |
| 11 h ago | Passed | 402 | 208 ms | $0.05 |
| 15 h ago | Passed | 402 | 180 ms | $0.05 |
| 18 h ago | Passed | 402 | 495 ms | $0.05 |
| 23 h ago | Passed | 402 | 147 ms | $0.05 |
| 26 h ago | Passed | 402 | 270 ms | $0.05 |
| 30 h ago | Passed | 402 | 481 ms | $0.05 |
| 33 h ago | Passed | 402 | 176 ms | $0.05 |
| 37 h ago | Passed | 402 | 154 ms | $0.05 |
| 40 h ago | Passed | 402 | 383 ms | $0.05 |
| 44 h ago | Passed | 402 | 292 ms | $0.05 |
| 47 h ago | Passed | 402 | 254 ms | $0.05 |
| 2 days ago | Passed | 402 | 681 ms | $0.05 |
| 3 days ago | Passed | 402 | 470 ms | $0.05 |