This server exposes browser debugging commands via 9 tools, all read-only. While tool names follow a reasonable verb_noun pattern (dom query, network list), the implementation has significant quality gaps: (1) Most parameter descriptions are generic and lack actionable constraints, e.g., 'Output as JSON' does not explain what JSON structure is returned, and format parameters like 'png or jpeg' are buried in descriptions rather than declared as enums. (2) No output schemas are documented anywhere in the source; LLMs cannot predict what fields to extract from responses. (3) Error handling is absent, no recovery guidance, no classification of retryable vs fatal errors. (4) The server uses STDIO transport, which blocks remote accessibility and testing. (5) Parameter naming inconsistencies: dom screenshot has both 'selector' and 'index' for element reference, but no documentation explaining when to use which or how they interact. (6) No security annotations despite exposing DOM evaluation (dom eval allows arbitrary JavaScript execution on the page). Tools are defined but lack the structure and detail expected of production-grade MCP agents.

• Add formal output schemas for all tools. Document the return type (e.g., 'Returns array of {selector: string, text: string, attributes: {[key]: string}}' for dom query), field names, and types. This is critical for LLM tool chaining.
• Convert format enums (png|jpeg for dom screenshot, image format selection) into proper JSON Schema enum constraints rather than description text.
• Document parameter relationships explicitly: explain that dom screenshot's 'selector' and 'index' are mutually exclusive, and define the behavior when both are absent.
• Add error handling guidance: e.g., 'If selector matches no elements, returns empty array. If JavaScript evaluation fails, error includes the exception message. Retry is safe.'
• Rename network getCookies to network_get_cookies for consistency with snake_case convention used elsewhere.
• For dom screenshot, document parameter defaults and valid ranges: quality 0-100 (default 90), interval >= 100ms (default 1000), limit >= 1 (default unlimited).
• Add security annotations to dom eval: declare it as a destructiveHint (or indicate high-privilege access), document that it executes arbitrary code in page context, and recommend role-based access control.
• Add pagination support to network list and network har with limit and offset parameters, plus a total count in the response. Current unbounded results could overwhelm the LLM context.
• Enhance dom get description to clearly distinguish semantic accessibility structure (default) from raw HTML (--raw), with examples of when each is useful.

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry