New in activeCollab 3 is option to check if you got a valid API URL from your users. This is especially useful for types of applications where you don't know where activeCollab is installed, so users need to insert API URL. To check if value is valid, you can make a simple GET request that adds ``check_if_alive`` GET parameter (set to 1) and read the response. If you run following command for example:

<{code inline=false}>curl http://site.com/activecollab/api.php?check_if_alive=1<{/code}>

You should get this XML response:

<{code highlight=xml}><?xml version="1.0" encoding="UTF-8" ?>
<api_is_alive>yes</api_is_alive><{/code}>