Mo. Rev. Stat. § 482.360
Barring person from small claims court, grounds, length of bar
Effective Aug 28, 1976(L. 1976 H.B. 1317 & 1098 § 4 subsec. 12)
If the court finds that the small claims proceedings are being used by a plaintiff or defendant for the purpose of oppression or harassment, it may issue an order denying the plaintiff or defendant use of small claims proceedings for up to one year.
(L. 1976 H.B. 1317 & 1098 § 4 subsec. 12)