in reply to Bing API Authentication in Perl

If I open the URL in browser, it is a Basic Pop Authentication with no Realm, the username should be blank and the password is the account key.

$mech->credentials($url, '', '', $account_key);

From the looks of it, you are using a format for credentials that is used with a proxy, and you are stuffing the url you wish to retrieve in as the proxy url. Why not just use

$mech->credentials( '', $account_key ); #??

Also see Need help using WWW::Mechanize to access proxy and authentication for another way of setting up Basic Authorization.

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