Single tool with well-structured schema and clear descriptions. The google_search tool has a properly defined JSON Schema with all parameters typed, described, and constrained. Tool name is action-oriented (search_) and unambiguous. Descriptions are adequate but could be more concise (current tool description is 130 chars, well within 10-1024 range; parameter descriptions average ~90 chars, above the 72-char baseline). Error handling is present but generic. No tool annotations (readOnlyHint, destructiveHint, idempotentHint) despite being a read-only operation. Output schema is documented in the description but not formally in the response structure.

• Add readOnlyHint=true annotation to google_search tool definition to signal to agents that this operation is safe and idempotent
• Formalize the output schema as a Pydantic model (GoogleSearchOutput with fields: results: List[Dict], message: str) and reference it in the Tool definition
• Enhance error messages in _parse_api_response and _make_api_call to include actionable recovery steps, e.g., 'No results found. Try broadening your query or removing siteSearch filters.'
• Add example invocations in docstrings showing common query patterns (e.g., 'query="Python async", num=5, dateRestrict="d7"')
• Validate dateRestrict format (d/w/m/y prefix + number) in GoogleSearchInput and return a clear validation error if format is wrong
• Document that fileType should be a single extension without the dot (e.g., 'pdf' not '.pdf')

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

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