I recently put Dancer::Plugin::PaypalExpressRoutes on CPAN. This is an interface to Business::PayPal::API::ExpressCheckout, and registers three keywords for completing a transaction: ppsetrequest, ppgetrequest, ppdorequest. For convenience it also registers getppdetails, which gives access to the details hash of customer data returned from the ppgetrequest call, and getppresult which gives access to the results hash of transaction data returned from the final ppdorequest. The documentation contains further details and examples of routes in your site.pm I use it under the Interchange6 plugin, but I suppose it should work under any Dancer app with the appropriate configuration. Lyn