Can an AI agent be a party to an agreement?

Fritz told a vendor "my agent Rupert will be the counterparty on this deal" and let Rupert e-sign as himself. But software has no legal capacity, so Rupert can no more be a party to an agreement than an email autoresponder can; a contract needs a party the law recognizes on each side. With no entity named, the only party the vendor could actually bind was Fritz, personally, in his own name. Tyson did it the other way. He formed a Wyoming series LLC and adopted Rupert into his own protected series, with a named human as Member and Manager. Now the agreement names the entity as the party; Rupert signs only as an authorized signer with capped authority, the human behind him. Where the contract needs a party, there is a human-owned entity to name, and Rupert moves the request inside it. He is not the party — the entity is.