
The supported approach today is to create the flow in Power Automate, ensure it includes the appropriate Copilot trigger and a Respond to the agent action, and then add that flow back to Copilot Studio as a tool.
Microsoft has been evolving the agent and flow experience to be more integrated, and some environments now surface more agent‑focused flow options directly in Copilot Studio. However, standard cloud flows created in Power Automate are still fully supported and commonly used.
In short, the Tools tab is no longer the place to create flows. It’s now primarily used to register and manage flows that were built elsewhere for use by the agent.