Verify a Polish NIP on the VAT White List
Verify a Polish NIP on the VAT White List - taxpayer name, VAT status, REGON, KRS, address, registered bank accounts and virtual account flag for payment checks
Answers HTTP 404 without x402 payment termsour last check, 2026-10-18
0 of 1checks answered this week
n/amedian answer time
$0.01listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/business/poland-vat
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | no x402 terms | 404 | 15 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"nip": "5260250995"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"queryParams": {
"properties": {
"nip": {
"description": "10-digit Polish NIP tax number",
"type": "string"
}
},
"required": [
"nip"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address": {
"description": "Account or contract address",
"type": [
"string",
"null"
]
},
"bank_accounts": {
"description": "Bank accounts",
"type": "array"
},
"bank_accounts_total": {
"description": "Bank accounts total",
"type": "number"
},
"has_virtual_accounts": {
"description": "True when this has virtual accounts",
"type": [
"boolean",
"null"
]
},
"krs": {
"type": [
"string",
"null"
]
},
"name": {
"description": "Name",
"type": "string"
},
"nip": {
"type": "string"
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"registered_for_vat": {
"description": "Registered for vat",
"type": [
"string",
"null"
]
},
"regon": {
"type": [
"string",
"null"
]
},
"removal_date": {
"description": "Removal date"
},
"representatives": {
"type": [
"number",
"null"
]
},
"request_id": {
"description": "Request id identifier",
"type": [
"string",
"null"
]
},
"restoration_date": {
"description": "Restoration date"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"vat_active": {
"description": "Vat active",
"type": "boolean"
},
"vat_status": {
"description": "Vat status",
"type": "string"
}
},
"required": [
"nip",
"name",
"vat_status"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}