I Built an Ontology Firewall for Microsoft Copilot in 48 Hours — Here’s the Production Code
Last Updated on March 4, 2026 by Editorial Team
Author(s): Pankaj Kumar
Originally published on Towards AI.
Most Copilot deployments are one bad agent action away from a serious production failure. This is the architecture that prevents it.
📌 GitHub Repository: cloudbadal007/copilot-ontology-firewall
This article details the construction of an Ontology Firewall specifically designed for Microsoft Copilot, highlighting the risks inherent to deployments that lack proper safeguards. Through a recounting of a real incident involving an unauthorized multimillion-dollar contract approval, the article outlines the importance of a robust semantic layer in AI operations. It also provides a build guide, broken down into sequential stages, for creating and deploying the Ontology Firewall, emphasizing its necessity for maintaining compliance and operational integrity in enterprise settings.
Read the full blog for free on Medium.
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