The server provides a well-structured recipes and ingredients API with 6 read-only tools. All tools have clear names following verb_noun convention (get_, list_, search_). Schemas are properly defined using Zod with type information and parameter descriptions. However, there are notable gaps: (1) Tool descriptions are generic and lack context about when to use each tool or dependencies between them; (2) Output schemas are not formally documented, responses are hardcoded text formatting; (3) No error handling guidance or recovery instructions; (4) Missing details about pagination behavior and result limits; (5) No tool annotations (readOnlyHint would be appropriate). The server sits in the upper-middle range due to consistent schema structure and reasonable naming, but lacks the polish and error handling expected for A-grade production tools.

• Expand all tool descriptions to 100-200 characters. Include: (1) What the tool retrieves/searches. (2) When to use it vs similar tools (e.g., 'Use get_recipe for a single recipe; use search_recipes to find recipes by keyword or ingredients'). (3) Any prerequisites (e.g., 'Requires recipe ID, call search_recipes first if unknown').
• Document structured output schemas explicitly. Instead of returning formatted text, return objects with typed fields: {ingredient: {id, name, aliases, categories, allergens, supportedUnits, createdAt, updatedAt, createdByGroupId}, ...}. Update handler responses to return structured JSON instead of hardcoded text formatting.
• Add error handling guidance. Catch and return meaningful errors: 'Ingredient with ID "xyz" not found. Try search_recipes() or list_ingredients() to discover available ingredients.' Include categorization: retryable (timeout) vs user-fixable (invalid ID) vs fatal (permission).
• Add tool annotations via MCP SDK. All 6 tools should be marked with readOnlyHint: true. Register tools using server.tool(..., {readOnlyHint: true}).
• Document pagination constraints in parameter descriptions. E.g., 'limit' → 'Number of results per page (1-50, default: 20)'. 'offset' → 'Number of results to skip (0+, default: 0)'. Document max result counts in tool descriptions: 'Returns up to 50 ingredients. Use pagination for larger result sets.'
• Clarify tool dependencies and composition. Add to search_recipes description: 'Returns recipe IDs suitable for get_recipe() calls. Returns ingredient IDs suitable for get_ingredient() calls.' This guides LLMs to chain tools efficiently.