The server defines 2 tools with explicit schemas and descriptions. browser_action has a well-structured, complex input schema with proper type definitions, enums, and nested objects (Viewport, CaptureOptions). compare_screenshots has a simpler but complete schema. Both tool descriptions are present and exceed 20 characters. However, there are several quality gaps: (1) Tool naming could be more verb-focused, browser_action is generic and doesn't clearly convey the primary intent (automation, testing, or navigation); (2) Error handling in the code shows basic validation but error responses to the LLM are not documented in tool descriptions, no guidance for recovery strategies; (3) Parameter descriptions are mostly good, but some lack format/constraint details (e.g., 'mask_selectors' array items are strings but no pattern or length guidance); (4) Output schemas are not formally documented in the tool definitions, responses are mentioned implicitly in descriptions but not structured as a formal response schema; (5) Security: the code includes secrets-detection regex patterns but no documentation of what happens to captured console/network data that might contain credentials. Baseline: avg tool description ~194 chars; both tools exceed 50 chars. Avg params per tool ~4; browser_action has 2 top-level params (actions array, viewport, capture), compare_screenshots has 2. Most parameters have descriptions.

• Rename 'browser_action' to a more specific verb: 'automate_browser_scenario', 'execute_test_scenario', or 'interact_with_browser'. This immediately conveys intent and helps LLMs select the tool correctly.
• Document output schema for browser_action as a formal JSON structure, e.g., { artifacts: [{ type: string, name: string, path: string }], dom_summary: string, network_errors: [ ... ], console_logs: [ ... ], execution_log: string }. Include field types and whether fields are always present.
• Add error handling guidance to tool descriptions: 'Possible errors: selector_not_found (try wait_for_selector first), timeout (increase timeout_ms or check network), validation_error (check action and required fields). Retryable errors: timeout, network_error. Non-retryable: validation_error, unsupported_action.'
• Document secrets sanitization: 'Captured console logs and network responses are scanned for credentials (passwords, tokens, API keys) and redacted before returning. Redacted patterns: [list regex patterns]. Review response for unredacted secrets before logging.'
• Add a parameter matrix to browser_action description or docs: 'Action-specific required fields: goto(url), click(selector), fill(selector, value), press(selector, key), select(selector, value), submit(selector), wait(), wait_for_selector(selector), expect_text(text), expect_selector(selector), screenshot(name, full_page, mask_selectors).'
• For compare_screenshots, document output schema: { baseline: string, current: string, diff: string, mismatch_pixels: integer, total_pixels: integer, percent_mismatch: float, is_match: boolean }. Specify what 'mismatch_pixels' threshold indicates a visual regression.