The WHMCS API provides developers with an interface to access and perform actions in WHMCS both from external applications and scripts as well as internal modules and addons. WHMCS is a hosting & domain management, recurring billing & integrated support company.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.