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Agent Loops Through Power Automate Tool

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Posted on by SalamiPi3

Hello everyone,

I have been developing an agent that calls a flow from power automate. The flow has been verified to work on its own. The flow had 15 parameters, of which 3 are mandatory. The agent behaves normally until it calls this flow, where it enters a looping trance that refuses to break. I will fill in the required parameters, then declare that the rest shouldn't be called. Despite this, the agent will then continue to go through all of the parameters to fill them. Within the settings of the tool I have put default values and to never ask again, but despite this the agent continues to ask and even "escalate" despite those settings changed. The instructions for the agent also state to not restate questions. When working alone, the agent does fine. When working with the tool, the agent flounders.

I have revised the agent's instruction set countless times and modified the tool as well to make it easier for the agent. This was to no avail. I have been developing this agent now for nearly two weeks and I see a few paths that could lead to solutions.

Create topics that call the tool explicitly and manually enter data
Have the user enter the data directly into the flow
Have the user input all fields regardless of how many they wish to input (worst case)

I would really like to keep this simple and not a convoluted mess. As of right now the entire call chain goes like this:
User -> agent -> flow -> excel -> flow -> agent -> user.

I would prefer not to continue to build along the agent but if I have to it is what it is.

Has anyone dealt with this problem? If so please provide some insight!

Thank you!

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Topic creation & management

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11manish 3,333 on at

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This behavior is consistent with the current limitations of Copilot Studio's tool invocation. Although only three parameters are required, the agent may still

attempt to populate all exposed inputs. The most reliable approach is to minimize the number of parameters exposed to the agent and move the remaining logic

into the Power Automate flow. If you need more control over the conversation, use a Topic or Agent Flow to collect the required inputs before invoking the flow.

This results in a much more predictable user experience and avoids the repetitive questioning you're seeing.

If the agent continues asking for optional parameters after you've confirmed they are optional, disabled "Ask every time," removed and re-added the tool, and

republished the agent, it is likely a product issue. In that case, I recommend opening a Microsoft Support ticket, as there have been reports of the new Copilot

Studio experience not consistently honoring optional tool parameters.

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SalamiPi3 17 on at

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I have opted to go for a JSON approach to minimize inputs as @11manish has suggested. This has resulted in success!

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