Sales and Marketing Resources

API Documentation

The following contains the current version of GlobalSign's Partner XML API documentation. The documentation assumes familiarity with SOAP and XML. Any technical questions or issues regarding the API may be sent to

SSL API Documentation v4.3.4
Standard SSL API for DomainSSL, OrganizationSSL, and ExtendedSSL. Now includes meta-tag & DNS verification methods.

Voucher API User Guide v1.2.3
The Voucher Documentation outlines the API used to order vouchers which can then be used with OneClickSSL plugins (cPanel, Plesk, IIS, Apache) or with the raw OneClickSSL API to provision and install SSL certificates. 1.2.2 contains new test environment links and updated error codes.

OneClickSSL API User Guide v2.1.3
The OneClickSSL Documentation outlines the API used to redeem vouchers, issue test certificates and retrieve valid SSL certificates. 2.1.1 contains error code updates.

MSSL API User Guide v1.2
The MSSL API allows access to GlobalSign's Managed SSL platform for immediate certificate issuance.

CloudSSL API User Guide
Please contact your account manager for access to and more info about the CloudSSL API.

GlobalSign SSL API Addendum v1.1
This Addendum provide additional guidance for obtaining SHA-256 certificates and on the maximum validity period of certificates which apply across all of the SSL API specifications.

Client API Documentation v1.1
The client API supports ordering PersonalSign Pro client certificates and Code Signing Certificates on behalf of end subscribers via a PKCS#12 delivery method. A customer using the API will retrieve issued Certificates from the ORDER response and then use its own methods to install or communicate the Certificate to the end user.

EPKI API Documentation v2.3
The EPKI API allows customers to directly order ePKI certificates. Currently the EPKI API supports only ordering (not querying) PersonalSign Pro client certificates on behalf of end subscribers via a PKCS12 delivery method. v2.3 includes new query functions.

Important Notices for Billing Platform Users

WHMCS: Please ensure SOAP support is enabled on your PHP. Installation instructions can be found at