Idea: instead of parsing web API response, you can request Google API directly

[vgrinko]

Example:
http://www.google-analytics.com/cx/api/V1/experiments/EXP_ID

[thomasbachem]

I do only know of the Management API, but that cannot be used to track experiment data AFAIK. Do you have a documentation link?

[vgrinko]

Well, I could not find documentation, but this is the link returned as part of response in api.js (where you have weights and other variation configuration).
It is called "self_link".