Three legal systems, one answer: the mandate holds

Switzerland

Agent mandates under Swiss law

Switzerland offers the agent mandate the clearest foundation in the DACH region: agency under Art. 32 ff. of the Code of Obligations is technology-neutral, revocation is possible at any time (Art. 34 CO), and with the state trust infrastructure (expected to go live in H1 2027; the E-ID itself has had no fixed date since 30 June 2026) the identity root gains state rank — on the same technical stack the Open Mandate Protocol uses.

Germany

Agent mandates under German law

Germany demands doctrinal precision for the agent mandate: §§ 164 ff. BGB govern agency, the «computer declaration» is recognised, and attribution is decided by the documented margin of discretion of the system — exactly what structured constraints provide. With the EUDI obligation (deadline 24 December 2026) and the German state wallet from 2 January 2027, the identity root becomes available on a regulated basis.

Austria

Agent mandates under Austrian law

Austria governs authorisation in the ABGB (§§ 1002 ff.): the contract of authorisation combines instruction and authority, the scope is determined by the nature of the transaction (§ 1029 ABGB), and revocation is permitted at any time. For agents this means: a generic authority with clear limits is the natural frame — and ID Austria already provides a state identity basis today.