Server has 19 tools with complete input schemas and descriptions, but quality is inconsistent. Naming follows verb_noun convention well (read_page, get_page_text, find_elements, click, type, press_key, set_form_value, take_screenshot, navigate, go_back, go_forward, get_console_messages, get_network_requests, evaluate_javascript, get_tabs, create_tab, close_tab, scroll, hover). Descriptions are present but brief (avg ~60 chars, below 194-char baseline). Parameter descriptions exist but lack detail on constraints, formats, and valid ranges. No output schemas documented. Error handling is minimal, no recovery guidance or error classification. No tool annotations (readOnlyHint/destructiveHint). Security concern: evaluate_javascript accepts arbitrary code with no warnings. Composition is reasonable, tools are single-purpose and chainable via tab_id.

• Document output schemas for all tools. E.g., read_page should return {elements: [{ref_id, tag, text, attributes}], total_count}. get_tabs should return {tabs: [{id, title, url}]}.
• Add min/max constraints to numeric parameters. E.g., depth: 1-50 (default 15), max_chars: 1000-100000 (default 50000), amount: 1-5000 (default 500).
• Expand press_key description with valid key names and combinations: 'Key name (e.g., Enter, Tab, Escape, ArrowUp) or combination (e.g., ctrl+a, shift+enter). See MDN KeyboardEvent.key for full list.'
• Add security warning to evaluate_javascript: 'WARNING: Executes arbitrary JavaScript in the page context. Can access cookies, localStorage, and DOM. Use only with trusted code. No sandboxing.'
• Add tool annotations to mcp-server.js tool registration. Mark read_page, get_page_text, find_elements, take_screenshot, get_console_messages, get_network_requests, get_tabs as readOnlyHint=true. Mark click, type, press_key, set_form_value, navigate, go_back, go_forward, create_tab, close_tab, scroll, hover, evaluate_javascript as destructiveHint=true.