Domain Affiliate with best/easiest API (with referral bonuses)?

I'm developing a domain generator (will, at some point, be at exdogen.com- "the exhaustive domain generator") that focuses mostly on typo-squat protection (basic auth that you own a domain, then generates common typos around that domain) and your general "beat the user over the head with a thesaurus" generator for typed in keywords. I'd like to monetize on it by using a domain registry affiliate like Moniker, only from what I can tell the moniker API doesn't let you send someone to a "buy this domain" referral-added-to-the-url page, only a "buy a domain" page with your referral id, and the user has to copy/paste in the domain of their choosing, one at a time (especially inconvenient if you're rocking the typo-squat protection set of domains).

So the question becomes: What's the easiest API to use among domain affiliates? Ideally I'd like to skip having a programmatic API, and just URL-munge or issue a POST with my referral ID and a list of the domains to be registered, and the registrar can handle the signing up of new accounts, the adding/removing of domains from the shopping cart, and the whole liability-saturated, mega-dreaded "payment process" themselves, with a small kickback to me for every purchase that happens through exdogen. Does such a setup exist? I'd gladly add support for multiple registrars, as long as they don't make it painfully difficult:P So far I've checked out moniker and godaddy, and neither seemed to have what I was looking for...

Much appreciated