Posts

Here’s a question nobody’s asking: if an AI agent is so intelligent, why can’t it pay its own electricity bill? Today’s most capable agents can write code, analyze markets, summarize legal documents, and chain together multi-step workflows that would take a human days. They are, by most useful definitions, superhuman at a growing list of tasks. And yet every single one of them will die the moment a human forgets to renew a $20/month API subscription. ...

When we built QNTX’s x402 LLM gateway — a service where AI agents pay for model inference with crypto instead of API keys — we ran into a security problem that the x402 protocol wasn’t originally designed to handle. The problem: the settlement race condition. And getting it wrong means either your operator loses money on every attack, or your entire service becomes a free LLM endpoint for anyone with a script. ...