When you’re using Basic Authentication, you can’t just pass the {username}:{password} string; you need to base64-encode it. libcurl docs on Basic Auth So your line ‘Authorization’: ‘Basic ‘ + WP_USER + ‘:’ + WP_APPLICATION_PASSWORD should be more like ‘Authorization’: ‘Basic ‘ + base64( WP_USER + ‘:’ + WP_APPLICATION_PASSWORD ) (I don’t know how Python does … Read more