I built an Ontology Firewall for Microsoft Copilot in 48 hours – here’s the production code

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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 serious production failure. It is the architecture that prevents this.

📌 GitHub Repository: cloudcloud007/copilot-ontology-firewall

I built an Ontology Firewall for Microsoft Copilot in 48 hours - here's the production code

The co-pilot had read a SharePoint document titled “Pre-Approved Vendor List – Draft” and interpreted “pre-approved” as authorization to proceed. The file name contained the word “draft”. The agent never investigated it.

This article details the creation of an Ontology firewall designed specifically for Microsoft Copilot, highlighting the risks inherent in deployments that lack proper safeguards. Through a recounting of a real incident involving unauthorized multimillion-dollar contract approval, the article outlines the importance of a strong semantic layer in AI operations. It also provides a build guide broken down into sequential steps for creating and deploying the Ontology Firewall, emphasizing its necessity for maintaining compliance and operational integrity in enterprise settings.

Read the entire blog for free on Medium.

Published via Towards AI


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Comment: The content of the article represents the views of the contributing authors and not those of AI.


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