Each tool targets a clearly distinct action: cover_song creates a cover, list_voices reads the available voices, and points reads the account balance. There is no overlap in purpose and an agent can trivially select the right one.

cover_song and list_voices follow a clear verb_noun pattern, but 'points' is a bare noun with no verb, a minor deviation. Overall still readable and predictable.

Three tools is a lean but coherent surface for a narrow service (check voices, check credits, make a cover). It is on the thin side but each tool earns its place and none are redundant.

The core workflow—inspect voices, verify credits, generate a cover with timed lyrics—is fully covered. Minor gaps exist around voice management (e.g. cloning/deleting voices) and cover job status, but the synchronous cover_song flow mitigates the latter.