Critical gaps across all dimensions. Tool definitions lack input schemas entirely, cannot verify parameter types, constraints, or descriptions. No visible schema registration in the provided source code. Tool descriptions are present but generic (10-50 chars), offering minimal LLM guidance on when/why to invoke each tool. No evidence of output schema documentation. Error handling and recovery guidance absent. All 5 tools appear to be inferred from tool names only; actual registration code not visible in the provided excerpt.

• Provide complete input schemas for all tools in the MCP server registration. Each parameter must have: name, type (string|number|boolean|array|object), description (50+ chars), and constraints (enum, pattern, min/max). Example: { name: 'file_path', type: 'string', description: 'Absolute or relative path to the file to audit. Must be within the project root.', pattern: '^[^<>:"|?*]+$' }
• Expand tool descriptions to 100-200 chars. Include: (1) what the tool does, (2) when to use it instead of similar tools, (3) what it returns. Example for audit_file: 'Audit a file for design system drift. Use this to detect violations of design tokens, component patterns, and accessibility rules. Returns a list of findings with severity, location, and suggested fixes.'
• Document output schemas for all tools. Specify: field names, types, and which fields enable chaining to other tools. Example: get_design_system_graph returns { nodes: [{id, name, type}], edges: [{source, target}], total_nodes: number }. This lets LLMs know they can extract node IDs for downstream calls.
• Add error handling with recovery guidance. Categorize errors as retryable (timeout, rate limit) or user-fixable (invalid file path, missing config). Example: 'File not found at /path/to/file. Ensure the path is relative to the project root. Available files: [list].' This guides the LLM to self-correct.
• Implement parameter validation with actionable error messages. If audit_file expects a file path, validate it exists and return 'Invalid file path: /nonexistent.tsx, file not found. Available files in src/: [list]' instead of a generic 500 error.