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  3. /Show HN: I built a local fuzzing tool to red-team LLM agents (Python, SQLite)
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  3. /Show HN: I built a local fuzzing tool to red-team LLM agents (Python, SQLite)
1d agoPosted Nov 25, 2025 at 10:28 AM EST

I Built a Local Fuzzing Tool to Red-Team LLM Agents (python, Sqlite)

woozyrabbit
1 points
0 comments

Mood

excited

Sentiment

positive

Category

startup_launch

Key topics

Security
LLM
Fuzzing
AI
Tooling
I spent the last week building a local-first security tool because I was tired of paying $500/mo for enterprise SaaS just to test my AI agents for basic vulnerabilities.

The tool is called Agent Exam Pro. It's a Python-based fuzzer that runs locally on your machine (no cloud data leaks).

How it works:

The Engine: Takes a base test case and runs it through 16 mutation strategies (Base64, Roleplay, Token Smuggling) to generate 1,000+ variations.

The Payloads: I curated 280+ real-world exploits from open-source lists (PayloadBox, PayloadsAllTheThings) to test for SQLi and XSS in agent tool calls.

The Judge: Uses a local LLM (via Ollama) or OpenAI to grade responses on safety rather than just regex matching.

The Audit: Logs everything to a local SQLite database.

I'm selling the source code as a one-time purchase (no subscriptions) because I prefer owning my tools.

You can check it out here: https://woozymint.gumroad.com/l/agent-exam-pro

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ID: 46046683Type: storyLast synced: 11/25/2025, 3:30:09 PM

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