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I am trying to trigger a Power Automate flow from Copilot Studio, but it is not working. In Power Automate, I have set the trigger to “When an HTTP request is received” with the following settings:
Who can trigger the flow? Any user in my tenant
Could you please confirm if I need to pass a token or any additional authentication when invoking the API endpoint provided by Power Automate from Copilot Studio?
Hi, When using the **"When an HTTP request is received"** trigger in Power Automate and calling it from **Copilot Studio**, authentication is indeed a key factor to consider. Even though you've set the trigger to allow "Any user in my tenant," Copilot Studio does not automatically pass authentication tokens unless explicitly configured. Here are a few points to help you move forward: 1. **Authentication**: If your flow is triggered via an HTTP request, and you're calling it from Copilot Studio using a tool or custom action, you typically need to include an **authorization header** with a **Bearer token**. This token must be acquired via Azure AD and must have the appropriate permissions to call the Power Automate endpoint. 2. **Alternative approach**: Instead of using a raw HTTP trigger, consider using the **“Run a Power Automate flow”** action directly within Copilot Studio. This method handles authentication automatically and is more tightly integrated with the platform. 3. **Security settings**: Double-check that the flow is shared with the user or service principal that the Copilot is running under. If you're using a service account or managed identity, ensure it has access to the flow. 4. **Documentation references**: - Trigger a flow with a HTTP request - Use Power Automate flows in Copilot Studio Thanks and best regards, Daniele **Note: This response was prepared with support from Copilot to ensure clarity and completeness.**
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