At this time, we do not currently offer an API. Instead we offer a Common Gateway Interface (CGI). This means your site will need to contain an HTML form or link with cgi parameters appended that passes the correct parameters (and the customer) to our site to complete their purchase.

If you choose to use our plug and play cart you can integrate by first creating products in your 2Checkout account and then taking the HTML snippets we provide you for each product and pasting them into your website.

If you choose to use your own shopping cart, orders will be passed in by using either our third party cart parameter set or Authorize.net parameter set. If the cart has a 2Checkout module the 2Checkout integration generally consists of filling in several fields correctly on the shopping cart admin and the 2Checkout sellers area.

Once the sale has been completed, our return process can return both the customer and the sale parameters to a url that you specify. We are also able to notify your site of any sales activity through our Instant Notification Service.

This information should help to get the integration process started. If you need any additional support with your integration please feel to reply to this thread or contact us directly with any account specific issues.