As part of a deal with prosecutors, the man accused of smashing a vase by the Chinese artist Ai Weiwei in a museum here pleaded guilty Wednesday to criminal mischief but avoided any more jail time beyond the two days he spent behind bars after his arrest.

Maximo Caminero, a 51-year-old artist from the Dominican Republic, will be on probation for 18 months and serve 100 hours of community service by teaching children how to paint. Mr. Caminero also must pay restitution of $10,000, the appraised value of the vase he dropped on the floor of the Pérez Art Museum Miami on Feb. 16 in what he said was a political act.