Show HN: BotCost.dev — Free Browser-Only Tool to Measure AI Bot Bandwidth Costs on Your Site — 18 Points

botcost.dev / Hacker News·low signal

A Show HN launch of BotCost.dev, a free client-side tool that analyzes Nginx, Apache, Cloudflare, or Vercel log files to identify how much bandwidth 18 known AI crawler bots (GPTBot, ClaudeBot, Perplexity, etc.) are consuming and costing your website — everything runs in the browser with no uploads. The tool estimates a typical 50K-visitor/month site loses approximately $180/month to AI scraper traffic and generates ready-to-paste WAF blocking rules for Cloudflare, Nginx, or Next.js. Useful for any site operator wanting to quantify and control AI bot costs.