This server has two search-oriented tools with clear naming and basic schema support, but significant gaps in parameter descriptions, output documentation, and error recovery guidance. Both tools follow the verb_noun pattern (google_search, read_webpage) and have brief descriptions, but descriptions are below the 50-200 char LLM-optimized range. Parameter descriptions exist but lack detail on constraints and formats. Output schemas are not documented, the code returns JSON-stringified content but LLMs cannot see what fields to expect. Error handling is present (axios error checks) but responses do not guide recovery or categorize errors as retryable vs. fatal. Security is reasonably sound (no secrets in params, API keys injected via environment), but tool annotations for read-only operations are missing.

• Document output schemas explicitly. For google_search, declare: 'Returns array of {title: string, link: string, snippet: string}'. For read_webpage, declare: 'Returns {title: string, text: string, url: string}'.
• Expand tool descriptions to 50-200 characters with context: 'Search the web using Google Custom Search API. Returns top results ranked by relevance. Best for fact-checking, research, and discovery. Returns up to 10 results per call.'
• Add parameter descriptions with constraints and examples: 'num: Number of results to return (1-10, default 10). LLM will receive up to this many results; fewer may be returned if fewer matches exist.'
• Implement error categorization in responses. Example: 'API rate limit exceeded (retryable in 60s)' vs. 'Invalid API key (fatal, check GOOGLE_API_KEY environment variable)'.
• Add readOnlyHint to both tools since they perform read-only queries with no side effects.
• Extend google_search to support pagination by adding an optional 'start' parameter (1-indexed, for results 1-10, 11-20, etc.) and document the pattern: 'Use start parameter to page through results in increments of 10.'
• Return structured content objects instead of JSON-stringified strings. Use MCP's content block format with explicit type/field info so LLMs can extract 'title' without JSON parsing.
• Add a 'max_retries' field to error responses when timeouts occur, e.g., 'Network timeout fetching <url>, recommend retry up to 3 times with exponential backoff'.