A few weeks ago I wrote about describing your site once so any AI can use it. Since then the thing I was hand-waving at ("agents will check out for users") stopped being hypothetical. OpenAI shipped ACP and Google shipped AP2, and they solve the same problem in almost opposite ways.
Source: [Dev.to](https://dev.to/rolandfarkas/acp-vs-ap2-the-two-ai-checkout-protocols-and-what-your-store-actually-has-to-build-55d3)