Server has 6 well-named tools with complete descriptions and input schemas. All tools follow verb_noun naming (search_places, get_place_details, etc.). Descriptions are detailed (100-250 chars) and explain WHEN to use each tool. Input parameters have types and descriptions. However, output schemas are documented only in docstrings, not in the MCP tool registration itself. No error handling guidance, no parameter validation rules (e.g., max_results 1-20 constraint not enforced), and no mention of API key injection or rate limiting. Missing tool annotations (readOnlyHint, idempotentHint). All tools are READ_ONLY but this is not declared in the schema.

• Add JSON Schema outputSchema to each tool definition with typed fields (e.g., places: array of {place_id: string, name: string, rating: number, address: string}). Move output documentation from docstrings into the schema.
• Declare readOnlyHint: true in the schema for all 6 tools to signal to LLMs that these are safe, non-destructive operations.
• Add error handling guidance to each tool description: 'If no results found, try broadening the query or increasing radius_meters. If API quota exceeded, wait before retrying.'
• Add minValue/maxValue constraints to numeric parameters in JSON Schema: max_results [1, 20], radius_meters [1, 50000]. Validate inputs server-side and return actionable error messages.
• Document API key injection: add a note that GOOGLE_MAPS_API_KEY must be set as an environment variable before startup. Never expose it as a tool parameter.