Single tool 'search' has a well-structured schema with all parameters typed and described. Description is clear and actionable (194 chars), explaining what the tool does, parameters, and return format. However, output schema is documented only in prose, not as a formal JSON Schema structure. No error handling guidance for common failures (SearXNG unavailable, timeout, invalid query). Parameter descriptions include examples ('general', 'news') which could be replaced with enums. Missing tool annotations (readOnlyHint, idempotentHint). The tool is read-only and idempotent, but these properties are not declared.

• Add formal JSON Schema output definition: {"type": "array", "items": {"type": "object", "properties": {"title": {"type": "string"}, "url": {"type": "string"}, "content": {"type": "string"}, "engine": {"type": "string"}}, "required": ["title", "url"]}}
• Convert 'categories' parameter to enum: ["general", "news", "science", "it", "social media", "images"] with description 'SearXNG category filter'
• Convert 'time_range' parameter to enum: ["day", "week", "month", "year"] with description 'Restrict results to content from the past X'
• Add error handling guidance to description: 'If SearXNG is unavailable, check SEARXNG_URL environment variable. If query times out, reduce max_results or try a simpler query.'
• Declare tool annotations in FastMCP: @mcp.tool(readOnlyHint=True, idempotentHint=True) to signal safety properties to clients