This is the development version of the current validation web services of the OpenTox project (http://opentox.org). The validation service is available here: http://opentox.informatik.uni-freiburg.de/validation. File in requests and bugs at http://github.com/opentox/validation/issues, or send an e-mail to guetlein[at]informatik.uni-freiburg.de | karwath[at]informatik.uni-freiburg.de.