In the title compound, C(12)H(16)ClN(3)O, the piperazine ring has a chair conformation. Within this ring, the N-methyl nitro-gen atom has a pyramidal geometry and the N-carboxamide nitro-gen atom is almost planar (bond-angle sum = 359.8°). In the crystal, the mol-ecules are linked by N-H⋯O hydrogen bonds into C(4) chains propagating in [010].