Are there any search-as-a-service providers with fantastically easy APIs?

Question

Willing to pay a reasonable fee to add an externally-powered site search to my personal site.

Not requiring oAuth or anything much more complicated than curl-ing some JSON with a secret token is a major plus.

Thanks!

Answer 1

http://searchify.com looks pretty good.

I also recently found out that MySQL actually includes some decent plaintext search tools.