Server has 5 tools with complete input schemas and descriptions. Naming follows verb_noun convention (image_metadata, find_favicons, extract_og_image, generate_placeholder, responsive_images). Descriptions are present and substantive (avg ~150 chars), meeting the 10-1024 char baseline. However, output schemas are NOT documented, LLMs cannot predict response structure. Parameters lack type constraints (e.g., backgroundColor accepts any string, no hex validation). Error handling is minimal; no recovery guidance. No tool annotations (readOnlyHint, etc.). Missing pagination guidance for tools that fetch multiple items (favicons, OG images). Overall solid naming and description foundation, but incomplete schema documentation and weak error handling.

• Document output schemas for all tools. Example: image_metadata should return {content_type: string, file_size: number, last_modified: string, etag: string, cache_control: string}. LLMs need this to plan downstream calls.
• Add input validation with actionable error messages. E.g., 'Invalid backgroundColor: "xyz", must be 6-digit hex (e.g., "cccccc")'. Return error classification (retryable vs user-fixable).
• Add readOnlyHint: true to all tool definitions in ListToolsRequestSchema. This signals to agents that these tools are safe to call without confirmation.
• Add min/max constraints to numeric parameters in schemas. E.g., width: {type: 'number', minimum: 1, maximum: 4000}. This prevents LLMs from passing absurd values.
• For find_favicons and extract_og_image, add limit and offset parameters with defaults (limit: 20, offset: 0) and document max result count. Return total_count in response so agents know if pagination is needed.