Server has 11 tools with significant quality gaps. Most tools lack proper parameter descriptions (only 'query', 'url', 'state', 'latitude/longitude' have minimal descriptions). Tool names are reasonable (verb-noun pattern), but descriptions are inconsistent, some in Korean, some in English. No output schemas documented. Critical issue: execute_multiple_queries and modify_graph accept free-form query strings with no validation, injection protection, or error guidance. fetch tool has basic schema but no error handling. Weather and YouTube tools have minimal parameter documentation. No tool annotations (readOnlyHint/destructiveHint) despite clear risk levels. Error handling is absent, no recovery guidance, no actionable error messages.

• Add output schemas to all tools. Document what fields are returned, their types, and which are safe to chain to downstream tools. E.g., execute_cypher_query should return {results: [{field: string, value: any}], execution_time_ms: number}.
• Parameterize Cypher queries: replace raw 'query' string with structured params (e.g., node_label, relationship_type, property_filters). Validate against a whitelist of allowed operations. Prevent injection via prepared statements or query builders.
• Add tool annotations: mark modify_graph and execute_multiple_queries with destructiveHint=true; mark read-only tools with readOnlyHint=true. Use idempotentHint=true for get_* tools.
• Expand descriptions to 100-200 chars. Include WHEN to use each tool, what it returns, and error recovery hints. E.g., 'Execute a read-only Cypher query on Memgraph. Returns results as a list of records. If query syntax fails, check node labels via get_schema_info first.'
• Add enum constraints to parameters: get_alerts state param should be enum of valid US state codes (CA, NY, TX, etc.). get_forecast should validate latitude (-90 to 90) and longitude (-180 to 180) with min/max constraints.

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

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