Critical failures across all dimensions. Source code shows only skeleton implementations with no actual tool definitions visible. The index.js file contains placeholder comments ('// Implement JSON-RPC 2.0 logic with error handling') rather than functional code. Tool schemas are inferred from the problem statement, not visible in source. No parameter descriptions, no output schemas, no error handling logic. The example client has a syntax error (missing comma after 'method'). This is a non-functional stub, not a production-ready MCP server.

• Implement actual tool handlers in the /api/mcp endpoint. Replace placeholder comments with functional JSON-RPC 2.0 request routing and response formatting.
• Add complete descriptions to both tools (50-200 chars each). Example: 'shelter_search: Find cat shelters in Indonesia by location and search radius. Returns shelter names, addresses, contact info, and distance. Use this to locate nearby shelters for the user.'
• Document output schemas for both tools. Specify fields returned (e.g., shelter_id, name, address, phone, distance_km, hours, capacity) with types and descriptions.
• Add parameter descriptions with constraints. For shelter_search: 'location (string, required): City or region name in Indonesia (e.g., Jakarta, Surabaya). radius (number, required): Search radius in kilometers, 1-100.'
• Implement error handling with recovery guidance. Return structured errors like '{error: "Location not found", suggestion: "Try search_shelters() with a different city name"}' instead of raw exceptions.