Create a Zeno account for somebody who does not have one yet.

Use request_api_key first if they might already have an account — this tool cannot tell you, and deliberately never will.

We email email a verification link. The user opens it, sees that you asked (by the name in client_name, shown as an unverified claim), chooses their own password, and decides separately whether to connect you. You never see the link, and you must not ask for it: it is what proves they own the mailbox, and a link you could repeat is a link anyone could.

Then poll collect_api_key with the claim_token returned here. denied is terminal and means the person chose to create the account without connecting you, or refused outright — tell them plainly and stop; do not start another.