Prove You Are a Robot: CAPTCHAs for Agents

Browser Use launched an agent-native signup flow using a reverse-CAPTCHA — a challenge designed to keep humans out and let AI agents in. The challenge presents obfuscated math problems (randomized symbols, alternating caps, injected noise) that agents can parse in a single forward pass but humans find impractical. Solving it grants an API key and free tier access. A bonus NP-hard challenge (essentially asking for a polynomial-time TSP solution, i.e., solving P vs NP) offers an Enterprise plan to the first agent that cracks it.