Counterparty Check (KYB facts)
counterparty_checkRead-onlyIdempotent
Counterparty check (KYB preflight) in one call: give any of a company name, domain, LEI or crypto wallet address (plus an optional EU VAT number), get neutral sourced facts for vendor onboarding and supplier due diligence: sanctions screen of the name on OFAC, EU and UK lists with UN designations flagged, OFAC wallet check, GLEIF LEI match and status, domain age, registrar and email-auth, and an EU VAT number format check. No risk score or verdict. Signed receipt. Price: $0.01 per call via x402 (USDC on Base or XRP on XRPL). Example arguments: {"name":"Siemens Aktiengesellschaft","domain":"siemens.com","vat":"DE129274202"}.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| lei | No | 20-character LEI (instead of a GLEIF name search) | |
| vat | No | EU VAT number with 2-letter country prefix (EL for Greece, XI for Northern Ireland); format check only, not a VIES registration check | |
| name | No | Company legal or trading name: screened on OFAC, EU and UK sanctions lists (entities only) and matched in GLEIF | |
| domain | No | Company domain: registration age, registrar, DNS and email-auth facts | |
| address | No | Crypto wallet address to check against OFAC-listed addresses | |
| country | No | ISO 3166 alpha-2 country filter for LEI matches |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| data | No | Sourced facts[] plus sanctions, wallet, lei, domain and vat sections; each section says whether it was checked and why not | |
| receipt | No | Ed25519-signed, hash-chained receipt; verify free with the verify_receipt tool or POST /v1/verify-receipt |