Ai-Firewall
Prompt security analysis
What it does
AI Firewall is a security layer built for developers and startups using LLMs. It detects and blocks prompt injection attacks, redacts personal information (PII), and filters malicious jailbreak prompts before they reach your model. Built with Node.js, Express, and OpenAI GPT-4o-mini, it helps ensure your AI apps stay safe, compliant, and attack-resilient. 🔗 Live Demo 🎥 Demo Video 💻 GitHub Repo
Does a similar job
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The firewall for AI prompts. Drop-in security for LLM apps.
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OP here. I built this because I recently caught myself almost pasting a block of logs containing AWS keys into Claude. The Problem: I need the reasoning capabilities of cloud models (GPT/Claude/Gemini), but I can't trust myself not to accidentally leak PII or secrets. The Solution: A Chrome extension that acts as a local middleware. It intercepts the prompt and runs a local BERT model (via a Python FastAPI backend) to scrub names, emails, and keys before the request leaves the browser. A few notes up front (to set expectations clearly): Everything runs 100% locally. Regex detection…
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