$ curl -i  http://usertest-intra.koha.catalystdemo.net.nz/cgi-bin/koha/svc/authentication -d 'userid=testuser&password=password'
HTTP/1.1 200 OK
Date: Wed, 21 Jan 2015 04:19:49 GMT
Server: Apache/2.2.16 (Debian)
Set-Cookie: CGISESSID=2ab0de999ff93006b56e2d0e4f27a89c; path=/; HttpOnly
Vary: User-Agent,Accept-Encoding
Transfer-Encoding: chunked
Content-Type: text/xml; charset=ISO-8859-1

<?xml version='1.0' standalone='yes'?>
<response>
  <status>ok</status>
</response>

$ curl -b CGISESSID=2ab0de999ff93006b56e2d0e4f27a89c http://usertest-intra.koha.catalystdemo.net.nz/cgi-bin/koha/svc/members/upsert -d 'matchField=cardnumber&cardnumber=98765&categorycode=CA&branchcode=WLGTN&firstname=Joe'
<?xml version="1.0" encoding="UTF-8"?>
<response><status>failed</status><type>data</type><message>Critical field missing (create): surname
</message></response>

$ curl -b CGISESSID=2ab0de999ff93006b56e2d0e4f27a89c http://usertest-intra.koha.catalystdemo.net.nz/cgi-bin/koha/svc/members/upsert -d 'matchField=cardnumber&cardnumber=98765&categorycode=CA&branchcode=WLGTN&firstname=Joe&surname=Bloggs'
<?xml version="1.0" encoding="UTF-8"?>
<response><status>ok</status><borrowernumber>37718</borrowernumber><createOrUpdate>create</createOrUpdate></response>

$ curl -b CGISESSID=2ab0de999ff93006b56e2d0e4f27a89c http://usertest-intra.koha.catalystdemo.net.nz/cgi-bin/koha/svc/members/upsert -d 'matchField=cardnumber&cardnumber=98765&categorycode=CA&branchcode=WLGTN&firstname=Joe&surname=Bloggs&userid=joe.bloggs'
<?xml version="1.0" encoding="UTF-8"?>
<response><status>ok</status><borrowernumber>37718</borrowernumber><createOrUpdate>update</createOrUpdate></response>

$ curl -b CGISESSID=2ab0de999ff93006b56e2d0e4f27a89c http://usertest-intra.koha.catalystdemo.net.nz/cgi-bin/koha/svc/members/delete -d 'userid=joe.bloggs'
<?xml version="1.0" encoding="UTF-8"?>
<response><deletedcount>1</deletedcount><status>ok</status></response>

$ curl -b CGISESSID=2ab0de999ff93006b56e2d0e4f27a89c http://usertest-intra.koha.catalystdemo.net.nz/cgi-bin/koha/svc/members/delete -d 'userid=joe.bloggs'
<?xml version="1.0" encoding="UTF-8"?>
<response><deletedcount>0</deletedcount><status>ok</status></response>