Each tool maps to a single, clearly distinct session operation: authenticate (login), inspect/change the active firm (switch_firm), and clear credentials (logout). There is no realistic scenario where an agent could confuse these three actions.

All names are lowercase snake_case and verb-oriented (login, switch_firm, logout), so the pattern is readable and predictable. The only minor deviation is that login/logout are bare verbs while switch_firm uses verb_noun, but the convention is still coherent.

Three tools is small, but it is well matched to a narrow session/authentication scope where each tool earns its place. It would be thin only if the server were expected to expose broader ForexTrackr data operations, which the surface does not claim.

The full credential lifecycle is covered: authenticate, switch between firms (which also reports the active firm, avoiding a separate list tool), and forget credentials. Minor gaps are the absence of a standalone status/whoami check and any key-refresh or multi-key management operation, but agents can work around these via switch_firm.