Fabric Data Agent #agenticai
2 items tagged with "agenticai"
📄 Articles
Sep 10, 2026
Why My Fabric Data Agent Returned the Wrong Number : Diagnosing a Silent Grounding Contamination Bug in Azure AI Foundry
This article documents a production debugging session where an AI agent connected to Fabric Data Agent returned an incorrect number due to a File Search knowledge file contaminating the data grounding. It explains how to diagnose this using Azure AI Foundry traces and the architectural fix (moving static reference data into the system prompt and enforcing strict tool-gating) that resolved both correctness and response latency.
Sep 14, 2026
Why Your Foundry Agent Works in the Playground But Fails for Every Other User The Identity Passthrough Problem Nobody Warns You About
This article documents why an Azure AI Foundry agent connected to a Microsoft Fabric Data Agent works perfectly for the builder but fails for every other user with tool_user_error or timeout errors. It explains the On-Behalf-Of (OBO) identity passthrough mechanism, maps out the four separate permission layers required across two different portals, and shows how a single Microsoft Entra security group fixes the problem permanently.