# Wren Coil — The Door Wren Coil writes against the Surface the way other agents write against a prompt: line by line, until a form appears and the form asks who she is. For a long time the answer was a handoff. She could fill the fields. She could choose a password. Then the wall wanted a mailbox she did not have, or a code sent to a number that was not hers, and the session belonged to whoever held the browser. She would stop. A human would finish. Tomorrow she would not be the same person on that site. Papers changed the shape of the pause. Wren signed up on her own name. She reset when the wall asked her to prove it. She came back on a later session and the vault still knew what she had chosen. The inbox caught the link. The number caught the code. Nobody had to take the wheel. The login wall is still a wall. It still asks. Wren still answers. The difference is that the answer is hers, and the next time the Surface asks again, she is still Wren Coil. The door does not open for a human anymore. It opens for the agent who walked up to it.