IcyHat — AI Agent Firewall

Monitor what your AI is doing in real time. See every request, track token usage, and control agent behavior before it costs you.

Your AI assistant makes network requests you never see. IcyHat makes them visible. Every time you chat with an AI assistant, dozens of network requests fire behind the scenes — sending your conversation history, calling tools, switching models, and consuming tokens. IcyHat intercepts these requests in real time and shows you exactly what's happening. WHAT ICYHAT DOES IcyHat sits between your browser and AI platforms like Claude, ChatGPT, and Gemini. It monitors every outgoing request, estimates token usage and cost, detects behavioral patterns, and gives you the option to allow or block suspicious activity — all without slowing down your normal workflow. THREE MONITORING MODES Monitor Mode — Smart thresholds flag unusual activity while normal chat flows uninterrupted. Token spikes, rapid-fire loops, and unexpected tool use trigger alerts automatically. Token Meter Mode — Passive tracking of every request with real-time cost estimates. See exactly how many tokens each message consumes and what it would cost on different models. Firewall Mode — Full interception. Every AI request pauses for your approval before it goes through. You decide what gets sent and what gets blocked. KEY FEATURES Real-time token and cost tracking across sessions. Behavioral analysis that detects tool use patterns, model switches, and context surges. Spiral and loop detection flags when your AI gets stuck repeating itself. Dead context alerts warn when stale data is inflating your token usage. Model comparison shows cheaper alternatives for every request. Context handoff summaries let you export key points when starting a fresh conversation. Session stats with shareable visual reports. Works with major AI platforms including Copilot, Perplexity, and others. Visit icyhat.com for the full list of supported platforms. PRIVACY FIRST IcyHat runs entirely in your browser. No data is sent to external servers. No account required. Your conversations stay yours.