Single tool 'google_search' with significant quality gaps. The tool has a description (194 chars, within baseline 34-392), but the input schema and parameter descriptions are problematic. The 'q' parameter is marked optional=true despite being described as 'the only required parameter', a critical contradiction. No output schema is documented. The server uses FastMCP with D402 payment protocol but lacks tool annotations (readOnlyHint, destructiveHint, idempotentHint) for protocol alignment. Error handling is not visible in the tool definition, no guidance on what happens if the search fails, if the API key is missing, or if the Serper API returns an error.

• Fix optional flag: change optional=true to optional=false for 'q' parameter to match description 'only required parameter'.
• Remove inline examples from parameter description. Replace with formal constraints: add minLength=1, maxLength=2048, or pattern validation. Document the expected format: 'A natural language search query (e.g., 2-100 characters; supports operators like site:, filetype:, etc.)'
• Document the output schema explicitly in the tool description or add a separate 'returns' section. Example: 'Returns a dict with keys: searchParameters, answerBox (optional), knowledge_graph (optional), organic (list of results with title, link, snippet), relatedSearches (list), people_also_ask (list)'.
• Add error handling guidance: 'If the Serper API returns an error (rate limit, invalid auth, malformed query), the tool will raise an HTTPError with a message like "HTTP 429: Rate limit exceeded. Retry after 60s." Implement retry logic with exponential backoff.'
• Formalize tool annotations in the FastMCP decorator: @mcp.tool(name='google_search', description='...', readOnlyHint=True) to signal that the tool does not modify state.
• Simplify parameter description to 50-100 chars: 'A natural language search query (e.g., "python best practices", "restaurants near Seattle"). Supports Google operators like site:, filetype:, etc.'
• Document pagination/limits if applicable. If Serper returns max 100 organic results per request, state: 'The response includes up to 100 organic search results. If more are needed, use pagination parameters (num, start) in a follow-up call.'

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

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