11 tools with complete input schemas and basic descriptions, but significant quality gaps. All tools have descriptions (10-50 chars, below the 50-200 char baseline for LLM optimization). Parameter descriptions are minimal and lack actionable constraints. No output schemas documented. No error handling guidance. Tool names follow verb_noun pattern (coordinate_convert, keyword_search) but descriptions are terse and lack WHEN/WHY context. No tool annotations (readOnlyHint, destructiveHint). Parameters like 'coordsys', 'extensions', 'sortrule' lack format/constraint details in descriptions. No pagination guidance despite search tools returning potentially large result sets.

• Add output schemas to all tools. Document the structure of responses (e.g., keyword_search returns array of {place_id, name, location, address, type, rating}). This enables LLMs to chain tools and extract required fields.
• Expand tool descriptions to 50-200 characters. Include WHEN to use (e.g., 'Use for walking directions in urban areas; for transit, use transit_route'), WHAT it returns (e.g., 'Returns route steps, distance, and estimated time'), and any prerequisites (e.g., 'Requires valid longitude,latitude coordinates').
• Add constraints to parameter descriptions. For 'types' param, specify valid POI categories (e.g., 'Comma-separated POI types: restaurant, hotel, bank, hospital, school'). For 'radius', specify bounds (e.g., 'Search radius in meters, 1-50000'). For 'page', specify range (e.g., 'Page number, 1-100').
• Implement error handling with recovery hints. Catch API errors and return actionable messages (e.g., 'Invalid coordinates: expected longitude,latitude (e.g., 116.4074,39.9042). Check format and try again.').
• Add pagination guidance to search tools. Document result limits (e.g., 'Returns up to 20 results per page. Use page parameter to fetch additional results. Total count returned in response.').