Lookup in Google Contacts?

It would be great if I could have Sandy lookup in my google contacts. Now that Google has released an api (with readonly access, I think), I'd like to:

lookup John Dough @google
or
lookup google "john@dough.com"

I'd use this from my phone for info not important enough to store on the phone (rarely-used contacts) or that the phone doesn't store well (info in notes, or odd fields like "assistant's name").