This must have been a very recent change, but the UI no longer lets you set Workflows for the assistants. This used to be the first thing on the edit screen of an assistant, and now it's gone. Phone numbers can tie directly to assistants now, but then you lose the option to set your settings for the messaging service, as you can't configure this at a workflow level.

Hi Gambles, The ability to connect assistants directly to workflows in the UI has indeed been deprecated. As per recent updates, workflows can now serve as entry points for calls, which means you can directly associate phone numbers with workflows instead of assistants [source](https://docs.vapi.ai/changelog/2025/5/6). For configuring messaging service settings at a workflow level, you can use the workflow-level configuration for voice, transcribers, and other plans such as

monitorPlan

and

artifactPlan

[source](https://docs.vapi.ai/changelog/2025/6/19). This allows you to manage call and messaging settings in a more structured manner directly through workflows. Additionally, you can configure dynamic credentials within workflows for more flexibility [source](https://docs.vapi.ai/changelog/2025/6/19). If you have further questions or need assistance with specific configurations, feel free to ask.