This server defines 3 tools with basic structure but significant quality gaps. Tool names are reasonably clear (search_patents, fetch_patent, execute_cypher), but descriptions are minimal and lack LLM-optimized guidance. Input schemas are present with type definitions, but parameter descriptions are sparse or generic. The execute_cypher tool is particularly problematic, exposing raw query execution without constraints or validation is a security risk. Output schemas are not documented, making it impossible for agents to plan downstream operations. Error handling is absent, no guidance on recovery, retryability, or what to do when a patent is not found. Overall, this reads as a minimal CLI wrapper converted to MCP without agent-centric design.

• Add output schema documentation for all three tools. Document fields, types, and examples. E.g., search_patents returns [{patent_id, title, applicant, priority_date, ...}, ...] with total_count and next_cursor for pagination.
• Expand tool descriptions to 100 - 200 chars, following LLM-optimized pattern: 'Search Google Patents for inventions matching a query. Use for prior art checks, competitor tracking, or technology discovery. Returns up to <limit> results with pagination support.'
• Convert free-form parameter descriptions to constraints. Replace 'Filter by country (JP, US, CN, etc.)' with enum: country ∈ [US, JP, CN, DE, GB, FR, ...] or a JSON Schema pattern.
• Add format and range constraints to all numeric and date parameters: limit (integer, 1 - 100), priority_after (string, ISO 8601 date format YYYY-MM-DD).
• Implement rate limiting and query validation for execute_cypher. Whitelist allowed datasets, add query depth/complexity limits, return clear errors for malformed queries. Consider deprecating raw query execution in favor of predefined report/analysis tools.
• Add recovery hints to error scenarios. E.g., 'Patent US9152718B2 not found. Try search_patents with assignee or priority_date filters to locate related patents.' Pattern: recovery-guide.
• Document pagination for search_patents: 'Returns paginated results. If you need more than <limit> results, use next_cursor or increase limit up to 100. Default limit is 20.'
• Add parameter relationships documentation. E.g., 'priority_after and priority_before form a date range, both are optional but together they filter by priority date. Use publication_* for publication date filtering instead.'