[3] Kumi is a former High Commissioner to Nigeria and former Ambassador to Libya during Kufour's administration.
[4][5][6] He replaced Alhaji Basit Abdulai Fuseini Danso as the Ambassador of Ghana to Libya.
[9][10] In the 2016 Ghanaian general election, Kumi contested as an independent parliamentary candidate for the Sunyani East Constituency and lost.
[4][11][12] In 2020, he decided not to contest in New Patriotic Party primaries in Sunyani East Constituency.
[3] In 2020, Kumi presented a sum of ¢10,000, paraphernalia, about 400 T-shirts and five motorcycles to the Bono Regional branch of the NPP.