I just created and submitted to mycroft, Mozilla/Firefox search engines plugins archive, a plugin to search for Drupal 5.x apis at api.drupal.org.

Unfortunately, while I was submitting the plugin, I forgot to change one value which let the plugin search into 4.7 documentation instead of 5.x.

Mycroft does not have an editing feature then I was not able to correct the problem.

Then I had to submit the plugin again which now works.