The todo management tools (create_todo, delete_todo, list_todos, update_todo) are clearly distinct and cover the CRUD operations well. However, there is some ambiguity between get_kinde_billing and get_subscription_status, as both seem to retrieve subscription-related information, and refresh_billing_status overlaps with these. The authentication tools (login, logout, save_token) are distinct from the todo tools but have some functional overlap with each other.

Most tools follow a consistent verb_noun pattern (e.g., create_todo, list_todos, update_todo, get_kinde_billing, refresh_billing_status). The main deviation is 'login' and 'logout', which use a single verb without a noun, but this is a common convention for authentication actions. Overall, the naming is predictable and readable with only minor inconsistencies.

With 11 tools, the count is reasonable for a server that combines todo management with authentication and billing features. It's slightly on the higher side but not excessive, as it covers multiple domains (todos, auth, billing) within a coherent scope. The tools are well-distributed across these areas without obvious bloat.

For todo management, the server provides complete CRUD coverage (create, list, update, delete). Authentication is covered with login, logout, and token management. Billing features include status retrieval, refresh, and upgrade. A minor gap is the lack of a tool to downgrade or cancel subscriptions, but the core workflows are well-supported.