Mo. R. Civ. P. 55.05
A pleading that sets forth a claim for relief, whether an original claim, counterclaim, cross-claim, or third-party claim shall contain (1) a short and plain statement of the facts showing that the pleader is entitled to relief and (2) a demand for judgment for the relief to which the pleader claims to be entitled. An initial pleading filed in the family court division of the circuit court shall have attached thereto a certificate stating whether any other case involving any party to the action or any child of such party has been filed in the family court division and, if so, the certificate shall identify to the extent known by style and case number every other case in the family court division, whether pending or previously adjudicated, involving any such party or child. If a recovery of money be demanded, the amount shall be stated, except that in actions for damages based upon an alleged tort, no dollar amount shall be included in the demand except to determine the proper jurisdictional authority, but the prayer shall be for such damages as are fair and reasonable. A party may argue at trial that a specific amount of damages should be awarded even though the prayer is for a fair and reasonable amount. Relief in the alternative or of several different types may be demanded.
Mo. R. Civ. P. 55.05