There are already such "APIs", which can be operated by a combination of textual communication and money. Or by illicit security vulnerabilities. You might notice that LLMs are pretty good at that now.

We're building something that has the capabilities of humans. There is no X for which it's persistently safe to assume humans can X and AI cannot X.

The stock market is an API to build data centers and it’s proving to be extremely efficient.

And what is driving the Stock Market? Market makers like hedge funds and banks, who are using lots of AI to make decisions on what to invest in.

This API may turn out to be manipulating humans via email.