Payments portal

A computer-implemented method, comprising:

• receiving, at a portal including one or more first computers executing a widget construction module, a request for a widget to be used to support a transaction at a computing device, the request received from a site including one or more second computers hosting a webpage, and wherein the request includes one or more parameters that specify one or more customizations to the widget, wherein the one or more parameters include one or more of an identifier of the webpage or an identifier of an event handler associated with one or more events of the payment transaction;
• determining, at the one or more first computers of the portal, contents of the widget, data to be included with the widget, and a widget template to be used to generate the widget;
• generating, via the widget construction module executing on at the one or more first computers of the portal, the widget using a widget template language;
• packaging, at the one or more first computers, the widget and the data;
• and
• providing, by the one or more first computers of the portal, the widget and the data to the site for embedding in the webpage by the merchant site, wherein the widget is configured to be updated within the webpage by the portal.

A payment system comprising:

• a portal comprising one or more first computers executing a widget construction module and exposing a hypertext transfer protocol application programming interface via which calls to the portal are received;
• and
• a site, including one or more second computers, in communication with the portal and the site hosting a webpage associated with a marketplace,
• wherein the one or more first computers of the portal are configured to
• receive a call via the hypertext transfer protocol application programming interface, the call comprising a request for a widget to embed within a webpage at the site to conduct a payment transaction, wherein the request includes one or more parameters that specify one or more customizations to the widget, wherein the one or more parameters include one or more of an identifier of the webpage or an identifier of an event handler associated with one or more events of the payment transaction,
• determine contents of the widget, data to be included with the widget, and a widget template to be used to generate the widget,
• generate the widget using a widget template written in a widget template language,
• package the widget and the data, and
• provide the widget and the data to at least one of the one or more of the second computers of the site for embedding in the webpage by the site, wherein the widget is configured to be updated within the webpage by the portal.

A non-transitory computer readable medium having stored thereon computer executable instructions that, when executed by one or more processors, cause the computer to:

• receive a request for a widget to support a web payment transaction, the request received from a site computer hosting a webpage, wherein the request includes one or more parameters that specify one or more customizations to the widget, wherein the one or more parameters include one or more of an identifier of the webpage or an identifier of an event handler associated with one or more events of the payment transaction, and wherein the site computer is different from the computer;
• determine a content of the widget, data to be included with the widget, and a widget template to be used to generate the widget, the widget template being written in a widget template language;
• generate the widget based upon the widget template;
• package the widget and the data;
• and
• provide the widget and the data to the site computer for embedding in the webpage by the site computer, wherein the widget is configured to be updated within the webpage by the computer.