Critical failures across all dimensions. The server declares a single tool 'execute_skill_action' in mcp_server.py status output, but provides NO input schema, NO parameter descriptions, and NO output schema documentation. The tool description is a placeholder: 'Execute skill action for resume evaluation (declared in server status but not fully implemented in provided code)', explicitly admitting non-implementation. The client.py file contains business logic (evaluate_candidate method) but is NOT registered as an MCP tool with proper schemas. No error handling, no parameter validation, no security controls. This is a stub implementation, not a production MCP server.

• Define a complete input schema for execute_skill_action with typed parameters: resume_text (string, required, max 50000 chars), job_description (string, required, max 10000 chars), role (string, enum of valid roles or free-form). Add descriptions for each parameter explaining what it controls.
• Replace the placeholder description with a clear, actionable one (50-200 chars): 'Evaluate a candidate resume against a job description using structured scoring criteria. Returns a scorecard with technical skills, experience, leadership, and culture fit ratings, plus a hire recommendation and interview focus areas.'
• Document the output schema explicitly in the tool definition. Specify that the response is an object with fields: role (string), scorecard (array of {criterion, score, max, notes}), total_score (integer), max_score (integer), hire_recommendation (enum: STRONG_MOVE_FORWARD, MOVE_FORWARD, HOLD, PASS), interview_focus_areas (array of strings).
• Implement actual MCP protocol handling in mcp_server.py: parse incoming tool_call requests, invoke the evaluate_candidate logic, and return structured responses. The current implementation only prints a status message and exits.
• Add input validation and error handling: validate resume_text and job_description are non-empty and within length limits; catch evaluation errors and return actionable error messages (e.g., 'Resume text too short (min 100 chars)' or 'Invalid role: must be one of: Software Engineer, Product Manager, Data Scientist').