Prosper represented Trinidad and Tobago at the 1998 CONCACAF Gold Cup, coming on as a substitute against Mexico in a 4–2 defeat on 4 February 1998. On 5 June 1999, he scored a hat-trick against Grenada at the 1999 Caribbean Cup; his side won the encounter 7–0. Prosper earned a total of 17 international caps for Trinidad and Tobago between 1996 and 2003, scoring seven goals.