Counterparty check before invoicing or paying a company, in one call
Counterparty check before invoicing or paying a company, in one call: legal entity active (French registry), EU VAT number valid (VIES), insolvency proceedings (BODACC), asset-freeze and sanctions match (DG Trésor register, incl. EU and UN), IBAN checksum and country. Returns a verdict ok / review / block with reasons. From a SIREN, SIRET, EU VAT number or French company name. Charged only if the counterparty is found.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
311 msmedian answer time
$0.02listed price per call
$0.02price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://resolve402.dev/api/counterparty-check
| Category | Company and compliance |
|---|---|
| Provider host | resolve402.dev |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.02 | 311 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"siren": "552032534"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"company": {
"description": "French company name (alternative)",
"type": "string"
},
"iban": {
"description": "Optional IBAN to check (checksum, country, SEPA)",
"type": "string"
},
"siren": {
"description": "9-digit French SIREN",
"type": "string"
},
"siret": {
"description": "14-digit French SIRET (alternative)",
"type": "string"
},
"vat": {
"description": "EU VAT number, e.g. FR27552032534 or DE123456789 (alternative)",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}