Single tool with critical definition gaps. Tool name 'generate_rich_snippets' lacks action verb prefix (should be 'generate_' but is acceptable). Description is adequate (89 chars, within 10-1024 range). CRITICAL: Input schema visible in description but NOT in tool registration, tools/list response omits inputSchema entirely. Parameters documented in description but not in formal schema. No output schema documented. No error handling guidance. No pagination, no structured output specification.

• Add inputSchema to tools/list response with full JSON Schema: type, description, and constraints for each parameter (product_title, brand, price_usd, rating, review_count). Include min/max for numeric fields (price_usd > 0, rating 0-5, review_count >= 0).
• Modify mcp_server.py tools/call handler to extract parameters from payload['params'] and pass them to client.generate_rich_snippets(**params). Currently parameters are ignored.
• Document output schema in tool description or as a separate outputSchema field. Specify that response is an object with fields: snippet_id (string), product_name (string), schema_product_jsonld (string), schema_faq_jsonld (string), validation_status (string), search_rich_result_eligible (boolean).
• Add input validation and error handling. Validate price_usd > 0, rating 0-5, review_count >= 0. Return structured error responses: {'error': 'Invalid rating: must be 0-5, got X'}.
• Migrate from STDIO to HTTP+SSE or Streamable HTTP transport to enable remote accessibility and hosted client compatibility.