Hi,
the following request works on the demo:
I simply added ".php" to the url.
the following request works on the demo:
http://demo.piwik.org/index.php?module=API&method=Transitions.getTransitionsForPageUrl&period=day&date=yesterday&idSite=7&pageUrl=http%3A%2F%2Fforum.piwik.org%2Findex.php&format=JSON&token_auth=anonymous
I simply added ".php" to the url.