Originally published: https://agentbadge.xyz/blog/bstock-freemium-402 Tags: ai, api, webdev, cryptocurrency Every SaaS has a free tier and a paid tier. But how do you sell the paid tier when the customer is not a person but a program? An agent has no card, cannot fill a checkout form, cannot type a CVV. We solved it with HTTP 402 Payment Required — a status code that waited three decades for its moment. It is not an error. It is an invoice. Why does this matter beyond our tracker...