Zapier itself can perform extra actions out-of-the-box with “Multi-Step zaps”. You could add an action after your Discord step to create a Phabricator task.

But, it looks like there’s no Phabricator integration on Zapier. If Phabricator has a web API that allows for task creation, you can plug that into Zapier via either:

• a “Webhooks by Zapier” step that makes the request
• a “Code by Zapier” step if extra processing is needed
• a custom Zapier integration w/ Phabricator if you anticipate wanting more actions than “Create Task”