Each tool has a clearly distinct purpose: get_tabs retrieves tab information, activate_tab_by_id focuses a tab, close_tab_by_id closes a tab reliably, and close_tab serves as a deprecated fallback. The descriptions explicitly differentiate between preferred and legacy methods, eliminating any ambiguity in tool selection.

All tool names follow a consistent verb_noun or verb_noun_by_id pattern using snake_case (e.g., get_tabs, activate_tab_by_id, close_tab_by_id, close_tab). This uniformity makes the tool set predictable and easy to understand at a glance.

With 4 tools, this server is well-scoped for managing browser tabs, covering essential operations: retrieving tabs, activating them, and closing them (with both reliable and deprecated methods). The count is efficient without being overly sparse or bloated.

The tool set covers the core CRUD-like operations for browser tab management: get (list), activate (update focus), and close (delete). A minor gap exists in creating or opening new tabs, but the domain is focused on existing tab manipulation, and agents can work around this by using external methods if needed.