Oceania • ISO TO
Verify Tonga companies via API
Know Your Customer Limited verifies Tonga companies live from the Tonga Business Register, 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 Tonga
When you create a KYB case for a Tonga company, Know Your Customer Limited retrieves data live from the Tonga Business Register. 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.
Tonga data and document availability
What the API makes available for Tonga companies:
| Category | Available |
|---|---|
| Company data | Entity Name, Entity Type, Entity Status, Registration Number, Address, Registration Date, Previous Names, Tax Identification Number |
| Controlling entities & individuals | Name, Role, Nationality, Address, Appointed On |
| Shareholders & beneficial owners | Name, Role, Nationality, Address, Sharecount, Appointed On |
| Documents | Retrieved by default: Certificate of Incorporation, Registry Extract, Certificate of Change of Name Available on demand: List of all forms can be found here. |
AML, sanctions, and PEP screening on the entity and its associated individuals, and ongoing live monitoring with change alerts, are available for Tonga as part of the same case.
How to verify a Tonga company via API
The following example shows the complete flow: authenticate, search the Tonga 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 Tonga registry
curl -X POST https://api.knowyourcustomer.dev/v2/Companies/search \
-H "Authorization: Bearer $TOKEN" \
-H "Content-Type: application/json" \
-d '{"name":"Tonga National Bank","codeiso31662":"TO"}'
# 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":"Tonga National Bank","codeiso31662":"TO"}'
# 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 Tonga KYB API
What company data can I verify in Tonga?
For a Tonga company, the API returns the company record read live from the Tonga Business Register: 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 Tonga availability.
Does the API return beneficial ownership (UBO) data for Tonga companies?
The API resolves the controlling parties, shareholders, and beneficial owners for Tonga 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 Tonga Business Register discloses. See the UBO API.
Can I retrieve official registry documents for Tonga companies?
Yes. The default document set for Tonga includes Certificate of Incorporation, Registry Extract, Certificate of Change of Name, retrieved by default, with additional documents available on demand (List of all forms can be found here.). List and download them with the documents endpoint (GET /v2/Companies/{caseCommonId}/documents).
Is there a free sandbox for testing Tonga 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 Tonga. One integration, one set of credentials, one response schema across all markets. Browse all covered jurisdictions.
Related coverage: Christmas Island • Cocos (Keeling) Islands • Cook Islands • Fiji • French Polynesia • Marshall Islands.
Ready to verify Tonga companies?
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