[Plugin: WooCommerce] Add-to-Cart Button on another Website

Is there code to add a WooCommerce Add-to-Cart button on a separate Website, similar to the way a PayPal button on a Website works? Clicking the button on one Website sends the user to the cart of a separate WooCommerce site with the item added. (No affiliate tracking is needed.)

Seems like it should be pretty straightforward to do, but I cannot find a reference anywhere for doing this.

Thanks.