Mo. Rev. Stat. § 514.260: Duty of clerk in taxing bill of costs.

The clerk shall tax and subscribe all bills of costs arising in any cause or proceedings instituted or adjudged in the court of which he is the clerk, agreeably to fees which shall, for the time being, be allowed by law, and shall in no case allow any item or charge, unless the service for which it was made was actually performed in the cause.