⚠️ REQUIRES YOUR OWN ANTHROPIC API KEY. Visit the Anthropic API Keys page, create a free account, add $5 in credit, and paste your key into the Configure API screen. For anyone reviewing a contract, lease, NDA, medical form, or financial document before signing. Upload a PDF and get a structured report — 0–100 risk score, verdict, and every red flag in plain language. WhatsTheCatch knows exactly what questions to ask so you don't have to. No installation. Any browser.