They have a NVP API for subscription payments. https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_nvp_NVPAPIOverview https

They have a NVP API for subscription payments. https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_nvp_NVPAPIOverview https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&c... I haven't tried it yet though.