This is a multi-server repository with 6 tools across two implementations (weather API and RAG services). All tools have basic descriptions and inferred schemas, but critical gaps exist: (1) No visible input schema definitions in the source code provided, schemas are partially inferred from docstrings rather than properly declared via JSON Schema. (2) Parameter descriptions are minimal and lack type constraints (enums, min/max, format specs). (3) Output schemas are undocumented across all tools. (4) The source excerpt is truncated mid-function, preventing full assessment of implementation quality and error handling. (5) Tool naming is inconsistent: weather tools use underscores (get_weather_warning, get_daily_forecast) but RAG tools use camelCase (storeKnowledge, searchKnowledge). (6) No evidence of error recovery guidance, validation rules, or idempotency markers. Tools 1-2 (weather) are read-only but lack explicit risk annotations. Tools 3, 5 (store*) are WRITE operations but lack confirmation patterns or dry-run support. This is a portfolio of demonstration tools, not production-grade implementations.

• Declare formal JSON Schema for all tools with explicit input properties, type definitions (string, integer, array), constraints (enum, minimum, maximum, pattern), and required fields. Example: For 'location' param, define as enum of valid city IDs OR regex pattern for coordinates.
• Document output schema for every tool. For weather tools, specify response fields (temperature, humidity, warning_id, etc.) with types and what an empty warning list means. For RAG tools, return field names, types (string content, metadata object, similarity_score float).
• Convert Chinese descriptions to English and expand to 50 - 150 characters explaining WHAT the tool does, WHEN to call it, and key constraints. Example: 'Get severe weather warnings (storm, flood, etc.) for a city. Returns list of active warnings with timestamps. Call this to check hazards before travel.'
• Convert RAG tool names from camelCase to snake_case: storeKnowledge → store_knowledge, searchKnowledge → search_knowledge, etc., for consistency with weather tools and Arcade baseline (90% of A+ tools use verb_noun).
• Add error handling to search tools: if query is empty, return 'Query is required'; if no results found, return 'No similar documents found for: [query]. Try broader terms.' For weather tools: if city ID is invalid, return available city IDs or suggest city search.
• For write operations (store_knowledge, store_faq), add a 'dry_run' boolean parameter (default false) to preview the operation, or implement a separate 'preview_storage' tool to confirm before committing.

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

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