To obtain API key and the secret string, log in to Flickr and <a href="{$a->applyurl}">apply for a new key</a>. Once new key and secret are generated for you, follow the 'Edit auth flow for this app' link at the page. Select 'App Type' to 'Web Application'. Into the 'Callback URL' field, put the value: <br /><code>{$a->callbackurl}</code><br />Optionally, you can also provide your Moodle site description and logo. These values can be set later at <a href="{$a->keysurl}">the page</a> listing your Flickr applications.