Vision-context-mcp has 4 tools with basic naming and descriptions, but significant gaps in schema completeness, parameter documentation, and error handling. Tool names follow verb_noun convention (check_screen, show_recent_recording, start_reproduce_mode, stop_reproduce_mode), which is good. However, descriptions are minimal (10-50 chars), parameter descriptions are sparse or missing, and output schemas are not documented. No error handling guidance, no validation rules, and no security considerations visible. The server lacks structured output documentation and does not guide LLM recovery on failures.

• Document output schemas for all tools. E.g., check_screen should return {image_base64: string, window_name: string, analysis: string, timestamp: ISO8601}. Include all fields the LLM needs to chain calls.
• Expand tool descriptions to 80-150 chars with WHEN/WHY guidance. E.g., 'Capture and analyze the current screen or a specific window. Use when you need to see what the user is working on. Returns image data and AI-generated summary.'
• Add min/max constraints to numeric parameters. E.g., durationSeconds: 'How many seconds back to retrieve (1-60, default 30)'; timeoutMinutes: 'Maximum recording time in minutes (1-5, default 2)'.
• Add parameter descriptions for all inputs, including empty objects. E.g., stop_reproduce_mode input: 'No parameters required. Stops the active reproduction recording and returns captured frames.'
• Implement error handling with recovery guidance. E.g., 'Window not found. Available windows: [list]. Try check_screen() without windowTitle to auto-detect.' Return structured errors with error_code, message, and suggested_action.