Critical failures across all dimensions. Tool definitions exist only as JSON entries in catalog/mcp.json with minimal metadata. No input schemas are visible in source code, only tool names and brief descriptions. Parameters are completely undocumented. Output schemas are absent. Error handling guidance is missing. The catalog is a data file, not a functional tool implementation. Tools are declared but not implemented in the provided source.

• Add complete JSON Schema input definitions for every tool parameter. Include type, description, enum constraints, and min/max bounds. Example: { 'library_name': { 'type': 'string', 'description': 'Name of the library to resolve (e.g., react, lodash)', 'minLength': 1, 'maxLength': 100 } }
• Expand tool descriptions to 100-200 characters. Include: (1) what the tool does, (2) when to use it vs similar tools, (3) what it returns. Example: 'Query documentation for a library or framework. Use this AFTER resolve-library-id to fetch API docs, examples, and guides. Returns structured docs with sections, code samples, and links.'
• Document output schemas for every tool. Specify return type (object/array), required fields, and field types. Example for query-docs: { 'type': 'object', 'properties': { 'sections': { 'type': 'array', 'items': { 'type': 'object', 'properties': { 'title': { 'type': 'string' }, 'content': { 'type': 'string' } } } } }
• Add error handling guidance to descriptions. Example: 'If library not found, returns error with available alternatives. If API rate-limited, retry after 60 seconds.'
• Implement tool definitions in actual MCP server code (not just catalog metadata). The catalog should reference server implementations with full schemas, not serve as the source of truth for tool definitions.