Is there a free/pay web service that I can query to get MLS data? [closed]

Question

Given an MLS#, I'd like to get an XML document with details about the listing, like address, price and such. Not a NAR or CREA member. Mostly interested in North American rental property listing data.

Answer 1

If you're an NAR member, you can utilize their Internet Data Exchange (IDX) system, but it isn't available to non-members.