Single tool 'browser_inspect' has a well-structured schema with 6 parameters, all typed and described. The tool description (280 chars) clearly explains purpose, use cases, and available actions. Parameters include enums (action field), optional viewport config, and contextual help. However, output schema is not formally documented, the code returns different structures based on action (text JSON, or text+image), but this is not declared in the tool definition. Error handling returns structured JSON with error messages but lacks recovery guidance. The tool follows good naming (verb_noun) and parameter naming conventions (selector, url, viewport). No critical security issues detected (read-only tool, no secrets in params).

• Document the output schema explicitly in the tool definition. Specify that 'screenshot' action returns {selector, found, url, dimensions, image}, while other actions return {selector, found, url, ...action-specific fields}. Include field types and descriptions.
• Add recovery guidance to error responses. E.g., if selector not found: 'Selector not found. Try a broader selector (e.g., "button" instead of "button.primary") or use action "dom" to inspect the page structure first.'
• Fix the viewport parameter schema: either mark width/height as optional with defaults, or remove the default description. Recommend making them optional with defaults in the implementation.
• Document valid CSS property names for the 'properties' parameter, or provide an enum of common properties (color, background, border, display, margin, padding, etc.).
• Add a 'help' action example to the description showing what it returns, so LLMs know they can call it to discover available actions without trial-and-error.