Europe • ISO PL
Verify Poland companies via API
Know Your Customer Limited verifies Poland companies live from the E-MS-Portal7, returning company data, controlling parties, shareholders and beneficial owners, and registry documents, with AML screening and ongoing monitoring. Free sandbox available.
What the API returns for Poland
When you create a KYB case for a Poland company, Know Your Customer Limited retrieves data live from the E-MS-Portal7. A single integration returns the company record, the controlling parties and individuals, the shareholders and beneficial owners, and the registry documents, with AML screening on the entity and its associated individuals built into the same case.
Poland data and document availability
What the API makes available for Poland companies:
| Category | Available |
|---|---|
| Company data | Entity Name, Entity Type, Entity Status, Registration Number, Address, Registration Date, Tax Identification Number, Other Identifiers |
| Controlling entities & individuals | Name, Role |
| Shareholders & beneficial owners | Name, Jurisdiction (if entity), Role, Share count |
| Documents | Retrieved by default: Register Report Available on demand: Register Report (Historical) |
AML, sanctions, and PEP screening on the entity and its associated individuals, and ongoing live monitoring with change alerts, are available for Poland as part of the same case.
How to verify a Poland company via API
The following example shows the complete flow: authenticate, search the Poland registry, create a KYB case, and retrieve company data and the ownership org-chart. All calls go to the sandbox base URL for testing.
The sandbox at https://api.knowyourcustomer.dev is free. Request access to get your client credentials.
# 1. Authenticate (OAuth2 client credentials)
curl -X POST https://api.knowyourcustomer.dev/connect/token \
-d "grant_type=client_credentials" \
-d "client_id=YOUR_CLIENT_ID" \
-d "client_secret=YOUR_CLIENT_SECRET" \
-d "scope=PublicApi"
# 2. Search the Poland registry
curl -X POST https://api.knowyourcustomer.dev/v2/Companies/search \
-H "Authorization: Bearer $TOKEN" \
-H "Content-Type: application/json" \
-d '{"name":"Poland National Bank","codeiso31662":"PL"}'
# 3. Create a KYB case
curl -X POST https://api.knowyourcustomer.dev/v2/Companies \
-H "Authorization: Bearer $TOKEN" \
-H "Content-Type: application/json" \
-d '{"rawname":"Poland National Bank","codeiso31662":"PL"}'
# 4. Retrieve company data and status
curl https://api.knowyourcustomer.dev/v2/Companies/CASE_ID \
-H "Authorization: Bearer $TOKEN"
# 5. Get the beneficial ownership org-chart
curl https://api.knowyourcustomer.dev/v2/Companies/CASE_ID/org-chart \
-H "Authorization: Bearer $TOKEN"
Replace YOUR_CLIENT_ID and YOUR_CLIENT_SECRET with your sandbox credentials, and CASE_ID with the caseCommonId returned in step 3.
Frequently asked questions about the Poland KYB API
What company data can I verify in Poland?
For a Poland company, the API returns the company record read live from the E-MS-Portal7: the entity name, type, status, registration number, address, and registration date, along with the controlling parties, the shareholders and beneficial owners, and the available registry documents. See the table above for the full Poland availability.
Does the API return beneficial ownership (UBO) data for Poland companies?
The API resolves the controlling parties, shareholders, and beneficial owners for Poland companies and exposes them as a recursive ownership org-chart (GET /v2/Companies/{caseCommonId}/org-chart), tracing control through holding companies to the individual beneficial owners. The depth available depends on what the E-MS-Portal7 discloses. See the UBO API.
Can I retrieve official registry documents for Poland companies?
Yes. The default document set for Poland includes Register Report, retrieved by default, with additional documents available on demand (Register Report (Historical)). List and download them with the documents endpoint (GET /v2/Companies/{caseCommonId}/documents).
Is there a free sandbox for testing Poland company verification?
Yes. The Know Your Customer sandbox at https://api.knowyourcustomer.dev is a free, high-fidelity test environment. Request free sandbox access to start testing.
The Know Your Customer Limited API covers 147 jurisdictions worldwide, including Poland. One integration, one set of credentials, one response schema across all markets. Browse all covered jurisdictions.
Related coverage: United Kingdom • Aaland Islands • Albania • Austria • Belarus • Belgium.
Ready to verify Poland companies?
The sandbox is free and available immediately. Integrate once, cover 147 jurisdictions.