The historical PayLoadz seller API has been retired as a general-purpose catalog and file-management service. The current supported integration is a narrow HTTPS-only TransactionCreation service for approved sellers.
Current endpoint
-
Endpoint:
https://api.payloadz.com/TransactionCreation.asmx -
Compatibility endpoint:
https://api.payloadz.com/PayloadzWS.asmx -
SOAP action:
http://api.payloadz.com/TransactionCreation - Transport: HTTPS SOAP POST only. The public GET, test, catalog, upload, and documentation pages are disabled.
What it does
An approved seller can submit a customer email and one seller-owned downloadable product, using either the numeric product ID or the seller's SKU. PayLoadz validates the seller account, product ownership, downloadable file, daily grant limit, and request rate before creating the secure zero-dollar download grant. The buyer receives the normal secure download email.
Repeated requests with the same transaction ID are idempotent for the same product. Caller-supplied price and payment metadata do not control the grant; product and seller data are resolved from PayLoadz.
Credentials and approval
This integration uses the historical APIusername, APIpassword, and APIsignature SOAP fields. There is no Profile-page API token. Access is support-provisioned and allowlisted; sellers cannot self-enable the API.
After approval, open Account > API Access. The page shows the username and signature. Use Generate new API password to create a replacement password. PayLoadz generates the password; you do not choose it. The new password is shown only once. Generating a new password immediately replaces the previous one, so existing integrations must be updated.
Do not send credentials over HTTP or include them in tickets, source code, or public documentation. Contact PayLoadz Support to discuss approval.
For a complete request and response an integration agent can follow, see PayLoadz TransactionCreation API.
Unrelated legacy methods for product creation, file upload, file deletion, discounts, reporting, affiliates, and catalog/history access are not available through the restored service.