The conduct rules decide what may be automated here, and they are adopted state by state rather than nationally, so specifics have to be checked against your own jurisdiction. Client funds must be held separate from the property of the firm under the safekeeping rule, which means no system should move money out of trust without a human authorisation tied to an earned fee event. Reconciliation can be prepared automatically and must be reviewed by a lawyer. The unauthorised practice rule means a system may not give a client legal advice, and the supervision rules make the lawyer responsible for what any tool produces. The ABA issued its first formal ethics guidance on generative tools in 2024, covering competence, confidentiality, client communication, candour to the tribunal, supervision of the work and the reasonableness of fees.