There are currently two web services, one SOAP one POX, and a badge image service available for your use. Documenation will be available soon, but for now you can find out more information at the below blog post.
Digging My Blog - Dan Hounshell: Finally Web Services for TFF Ratio http://danhounshell.com/blogs/dan/archive/2008/03/18/finally-web-services-for-tff-ratio.aspx