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AgentGuard vs Semgrep vs CodeQL: 100 Percent vs 0 Percent on AI Agent Security

DEV Community [Unofficial] July 5, 2026
Source

I ran the same 39 AI agent security samples through three scanners: AgentGuard, Semgrep, and CodeQL.

The Results

Scanner Detection Rate False Positives
AgentGuard v0.6.4 100% (39/39) 0
Semgrep 0% (0/39) 0
CodeQL 0% (0/39) 0

Zero. Semgrep and CodeQL detected nothing. They have zero rules for AI agent security.

AgentGuard has 17 detection rules covering all 10 OWASP ASI categories plus 4 novel attack vectors: Memory Poisoning, Tool Output Trust, Action Chain Amplification, and Multi-Agent Collusion.

Real World

AgentGuard found 332 critical vulnerabilities across Microsoft AutoGen and LlamaIndex. Issues reported directly: autogen#7917, autogen#7918, llama_index#22245.

Reproduce

git clone https://github.com/dockfixlabs/agentguard-benchmark cd agentguard-benchmark pip install dfx-agentguard python benchmark.py

GitHub: https://github.com/dockfixlabs/agentguard PyPI: pip install dfx-agentguard

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