One who deals with an agent without knowing or having reason to believe that the agent acts as such in the transaction may set off against any claim of the principal arising out of the same all claims which the person dealing with the agent might have set off against the agent before notice of the agency.
N.D. Cent. Code § 3-03-08
Setoff against agent
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.