Zanata does not offer a way to query translation statistics via REST.
External clients in need of translation stats from Zanata had to resort to screen scraping and other methods to get the information.
Added Statistics REST endpoint to fetch translation statistic data from Zanata. Currently supports version and document level statistics. (Please see the REST API documentation for details on this service.)
External clients are now able to fetch translation statistics via the REST API, without resorting to screen scraping.