# Parameter Injection into Tool Calls

> Master how attackers inject malicious payloads into LLM-generated tool arguments, bypassing validation and triggering downstream vulnerabilities.

Canonical: https://codelivly.com/rooms/parameter-injection-into-tool-calls
Last updated: 2026-10-12

| | |
|---|---|
| Level | Intermediate |
| Category | Cybersecurity |
| Lessons | 3 |
| Estimated time | 30 min |
| XP | 100 |

This module explores the mechanics of Parameter Injection in agentic workflows. You will learn how attackers manipulate natural language prompts to force the LLM to generate malicious arguments (e.g., SQL payloads, shell metacharacters) that are passed directly to backend tools, and how to implement strict schema validation and backend sanitization to neutralize these attacks.

## Lessons

1. What is Parameter Injection in a Tool-Calling Context (30 min)
2. Manipulating Arguments Passed to a Function (30 min)
3. Guided Lab: Injecting Malicious Parameters into a Tool Call (30 min)

## Related

- [Learning path: AI API and Function-Calling Attacks](https://codelivly.com/learning-paths/ai-api-and-function-calling-attacks)
- [All rooms](https://codelivly.com/rooms)