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Copilot Studio
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Copilot Studio: MS Fabric Data Agent responses not rendering

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We’re deploying conversational analytics agents across our school division using Copilot Studio and Microsoft Fabric Data Agents. The agents are connected via MCP and return structured payloads with a messages[] array containing markdown-formatted insights (e.g., screener summaries, risk flags, intervention recommendations).

However, Copilot Studio does not render these responses conversationally. Instead, it either:

  • Falls back to escalation logic (“Escalating to a representative…”), or

  • Returns a generic “no data” message — even when isError: false and messages[] is populated.

  •  

✅ Confirmed:

 
  • MCP returns valid structured data with messages[] containing markdown.

  • Agent instructions explicitly direct Copilot to render messages[0] as conversational output.

  • Simplified instructions, new agents, and direct queries all fail to trigger rendering.

  • No response mapping or output binding is available for MS Fabric Data Agents in Studio.

  • Custom tools are not being used — this is a native MCP connection.

  • Payloads render correctly when manually flattened to a response string, confirming the issue is with array parsing.
 
I have attached my MS Fabric, MS Copilot Instructions and MCP Output from a Question.


     

I have the same question (3)
  • ZB-31101838-0 Profile Picture
    2 on at
    same issue

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