Minn. Stat. § 513.33
Subd. 1. Definitions.
For the purposes of this section, the following terms have the meanings given them:
Subd. 2. Credit agreements to be in writing.
A debtor may not maintain an action on a credit agreement unless the agreement is in writing, expresses consideration, sets forth the relevant terms and conditions, and is signed by the creditor and the debtor.
Subd. 3. Actions not considered agreements.
(a) The following actions do not give rise to a claim that a new credit agreement is created, unless the agreement satisfies the requirements of subdivision 2: