Scored across 30 tools
Every tool has a sharply distinct purpose, and the descriptions explicitly cross-reference siblings to disambiguate (navigate vs new_page, list_pages vs list_browser_sessions vs list_visits vs list_browser_states, take_screenshot vs take_snapshot vs evaluate, click vs evaluate-based clicks). Even the closely-related logging and state tools each carve out a clear, non-overlapping role. An agent could reliably select the right tool without guessing.
Names are uniformly snake_case and mostly use a predictable verb_noun pattern (open_browser_session, close_tab, list_pages, take_screenshot, save_browser_state, request_human_takeover). A few break the pattern as bare verbs (navigate, click, type, scroll, evaluate) and 'new_page' should arguably be 'open_page' for symmetry with open_browser_session/close_tab. Still highly readable and internally coherent.
30 tools is heavy and stretches past a comfortable surface, though the breadth reflects genuine scope (sessions, tabs, interaction, perception, logging, profiling, stealth, takeover, cookie state). Each tool earns its place individually, but the set is large enough that an agent must navigate many options for a single task. Borderline over-scoped rather than well-scoped.
Covers the core lifecycle well: session/tab management, navigation, trusted input, multiple perception modes, JS eval, console/network logs, profiling, stealth, human takeover, and cookie persistence. Gaps remain around browser history (back/forward), file upload/download, drag, iframe targeting, and non-cookie storage (localStorage/auth beyond cookie snapshots), but these are minor workarounds rather than dead ends.