Pixel Surgeon MCP has well-structured tool definitions with good naming conventions and parameter schemas, but falls short of production quality in critical areas. All 9 tools follow verb_noun naming patterns (generate_image, edit_image, list_generated_images, etc.), and each has a description. However, parameter descriptions are generic and inconsistent, output schemas are not documented, and error handling lacks recovery guidance. The schema score is dragged down by missing documentation of return types and incomplete per-tool validation rules.

• Document the output schema for every tool. Example: 'generate_image returns {imageUrl: string, imageId: string, modelUsed: string, timestamp: string}'. This enables LLMs to chain tools and extract the correct fields.
• Replace free-form constraint descriptions with explicit enums in parameter schemas. Instead of describing 'Size of the image in pixels. One of: 512, 1K, 2K, 4K', use a JSON Schema enum field with those exact values.
• Add error handling guidance to tool descriptions for write operations. Example: 'If generation fails, the model may be overloaded; retry after a short delay or try a different model. If the prompt is inappropriate, the API will reject it, try rephrasing.'
• Add pagination parameters (limit, offset or cursor) to list_generated_images and list_generated_videos. Document the maximum limit (e.g., 50 items per page) and return a total_count in the response schema.
• Rename 'interactive_crop' to 'edit_cropped_region' or 'apply_edits_to_selection' to clarify that edits are applied, not just a region extracted.
• Document side effects and idempotency in tool descriptions. E.g., 'generate_image creates a new image each time; repeated calls with the same prompt produce different results. Results are stored in the local gallery and can be retrieved with list_generated_images.'
• For list_* tools, document whether results are sorted, filtered by date, or paginated by default. Specify return fields explicitly (e.g., 'Returns a list of {id, prompt, filename, timestamp, modelUsed} objects').