---
title: "Discussion on \"Three Layers of Tool Call Hardening for AI Agents\" | Hashnode"
description: "Discussion on \"Three Layers of Tool Call Hardening for AI Agents\". Most devs focus on prompts and model choice. The real security gap is your tool schema. Here's how to harden AI agent tool calls in 3 layers."
url: "https://hashnode.com/posts/three-layers-of-tool-call-hardening-for-ai-agents/6a020519fca21b0d4b47d18c"
---

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# [Three Layers of Tool Call Hardening for AI Agents](https://blogs.navayuvan.com/three-layers-of-tool-call-hardening-for-ai-agents?utm_source=hashnode&utm_medium=feed)

Most devs focus on prompts and model choice. The real security gap is your tool schema. Here's how to harden AI agent tool calls in 3 layers.

May 11 · 6 min read · blogs.navayuvan.com  
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-   [#promptinjections](https://hashnode.com/tag/promptinjections)
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## Written by

[Navayuvan Subramanian](https://hashnode.com/@navayuvan)

@navayuvan · Chennai, Tamil Nadu, India

  
[View profile](https://hashnode.com/@navayuvan)

Ending boring work with AI 🧠 | Senior Full Stack dev building Agentic AI in production 👨‍💻 | Shipping in Public 🚀 | AI Consultant

Senior Software Engineer with 5+ years of expertise crafting innovative products that make people's lives easier, now with AI.

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