The server defines 9 tools with consistent verb_noun naming (list_*, get_*) that are clear and action-oriented. All tools have descriptions ranging from 50-100 characters, meeting the baseline of 10-1024 chars. Input schemas are present and use Zod with JSON Schema conversion. However, parameter descriptions are sparse or missing, output schemas are not documented, and error handling lacks recovery guidance. The server lacks tool annotations (readOnlyHint) despite all tools being read-only. No composition issues detected since tools are single-responsibility, but parameter validation and per-item error reporting for batch-like operations are absent.

• Document output schemas for all 9 tools. Add a 'Returns' section in the tool description or in code comments specifying the structure: 'Returns { id: number, name: string, price: number, ... }' for get_product, etc.
• Add detailed parameter descriptions in Zod schemas. For 'limit': 'Number of results per page (default: 10, max: 100)'. For 'sort': 'Sort order: asc (ascending, default) or desc (descending).'
• Add tool annotations (readOnlyHint: true) to all 9 tools in the server.setRequestHandler(ListToolsRequestSchema) block. This signals to agents that these tools are safe to retry.
• Enhance error handling in the CallToolRequestSchema handler. Instead of 'Error executing X: message', return contextual guidance: 'Product not found. Try list_products to see available products or search by category.' Reference pattern:recovery-guide.
• Document pagination clearly. Update list_products, list_carts, and list_users descriptions: 'Returns up to {limit} items. Use limit and sort parameters for control. If more results exist, consider fetching by category or filtering client-side.'
• Validate parameter constraints and return actionable errors. If limit > 100, return 'Invalid limit: 150. Maximum allowed is 100.' instead of passing the error to the API.
• Consider returning related IDs in responses. If list_products returns [{ id, name, category_id, ... }], the agent can immediately call get_products_by_category without an extra lookup.