I built a free proxy that prevents AI APIs from burning your budget (open source)

Background: I accidentally created a recursive loop with an AI agent that would have cost me $50+ in API calls before I noticed. Existing tools either cost money or only show you what already happened. So I built TokenFirefighter — a 100% free, local-only HTTP proxy. What it does: - Sits between your app and OpenAI/Anthropic on localhost:7272 - Tracks every API call cost in real time - Detects 4 types of runaway loops and blocks them - Has a terminal dashboard (no web UI needed) - Zero accounts, zero data collection, zero cost Install: npm install -g tokenfirefighter tokenfirefighter init tokenfirefighter start Then just set OPENAI_BASE_URL=http://localhost:7272/v1 in your .env. Would genuinely appreciate feedback from anyone who uses AI APIs regularly. GitHub: https://github.com/MohitBaghel24/tokenfirefighter submitted by /u/AdventurousMirror122 [link] [留言]