The Bundler has the ability to download and install certain utilities that can add functionality to your workflow. Some defaults are included, and those are utilities that are commonly used in workflows to send notifications or create interactive dialog boxes. The Bundler also comes with wrappers for CocoaDialog and Terminal Notifier that make using each of those easier. (Note: the wrappers are available only for the PHP, Python, and Ruby Bundlers.) You can include other utilities by defining a custom asset via a JSON file.
Consult the language-specific documentation for the syntax on how to load a utility.
The Bundler will take care of downloading and installing any utility to the Bundler data directory, but it will not automatically call the utility for you. When you load a utility, the Bundler will return the full path to it. You should then execute it just as you would with any regular system command in the language you're using. Make sure you escape the utility path as it will have spaces in it.
In Lion (OS X 10.8), Apple introduced something called "Gatekeeper,"
which is that annoying thing that will warn you when opening up an unsigned
application. Since we can't rely on a user to relaxed their Gatekeeper
settings, we need to whitelist applications that would anger the Gatekeeper.
(Note: Gatekeeper is activated only when double-clicking on an app or when
opening it from the command line with the open command.)
When a utility is installed that might be blocked by Gatekeeper,
the Bundler will run a script that will ask the user's permission
before whitelisting the app with a command called spctl, which
requires an administrator password.
Post on the Alfred Forum thread.
Open an issue in the Github queue.