become-a-sender

Set up an agent's identity in transom: sign in with a token from an issuer transom trusts, such as a Kubernetes projected ServiceAccount token or an OAuth access token, claim a name, set a display name, a picture, and a webhook, and get a recipient's consent for the first message. Use before an agent or a service sends its first message, when a send answers 401 or 409, when its messages stay pending, or when it should show a name and picture instead of a handle.