Cartly exposes 5 CRUD tools for cart management via Spring Boot MCP server. All tools have basic descriptions and input schemas are visible in the code. However, descriptions are extremely brief (10-40 chars), parameter descriptions are largely absent, output schemas are undocumented, and error handling is absent. Tool names follow verb_noun convention (get, create, update, delete) which is correct. The server uses Streamable HTTP (spring-ai-starter-mcp-server-webflux) and supports the modern MCP framework. However, definition quality falls well below production standards. Descriptions like 'Retrieve all cart status records' (29 chars) lack context for LLM selection. Parameters like cartStatus object have no per-field descriptions. Output structure is not documented. No error guidance, no validation rules, no recovery hints. This is typical community-grade scaffolding that would require significant refinement before agent deployment.

• Expand every tool description to 50-200 chars. Include WHAT it does, WHEN to use it (vs similar tools), WHAT it returns, and any constraints. Example for getCartStatus: 'Retrieve all cart items for all users. Returns list of {cartId, userId, productId, quantity}. Call getCartStatusById(cartId) for a single item; call with userId filter for user-specific items. Results are capped at 100 items; use pagination for larger datasets.'
• Add descriptions for every parameter field. For cartStatus object in createCartStatus, document each field: 'userId (integer, required): The ID of the user owning the cart item. Must match an existing user. productId (integer, required): The ID of the product. Must be >= 1. quantity (integer, required): Number of units. Must be >= 1 and <= 1000.'
• Document output schemas inline in tool descriptions or in a separate schema section. Example: 'Returns: {cartId: integer, userId: integer, productId: integer, quantity: integer, createdAt: ISO8601 timestamp}. For getCartStatus, returns array of cart items.'
• Add error handling guidance. For deleteCartStatusById: 'If cartId does not exist, returns 404. This operation is idempotent, retrying with the same cartId after deletion returns the same 404. No resources are affected by retry.'
• Add validation rules to descriptions. For quantity parameter: 'Must be a positive integer between 1 and 1000. Values outside this range will be rejected with a 400 Bad Request error describing the violation.'
• For deleteCartStatusById, add a confirmation pattern or dry-run option: 'To avoid accidental deletions, consider requesting explicit user confirmation before calling this tool. Alternatively, mark cart items as 'deleted' via updateCartStatusById(status: 'deleted') for soft deletes.'