On Tue, Dec 02, 2014 at 10:17:46AM +0000, Mizutani, Michiyuki wrote: > Hi Steven, > > Thank you for your quick response. > > The following document is correct as credential API of ec2tokens, isn't it? > http://developer.openstack.org/api-ref-identity-v3.html Yes, the example in http://developer.openstack.org/api-ref-identity-v3.html#credentials-v3 Looks OK, although the example blob is not JSON serialized, despite teh description saying "JSON-serialized dictionary". I think the API will tolerate either format though. Steve