Strong foundation with 7 well-named tools, comprehensive descriptions including untrusted-data warnings, and visible input/output schemas. All tools follow verb_noun naming (search, fetch_content, image_search, etc.). Descriptions are 150-250 chars, exceeding the 10-1024 baseline. Parameters have types and descriptions. However, output schemas are inferred from format functions rather than explicitly documented in tool registration, and error handling lacks recovery guidance (e.g., 'try list_engines first'). No pagination support despite search tools returning multiple results. Tool annotations present (readOnlyHint, idempotentHint) but not visible in registration code snippet.

• Add explicit output schemas to each tool registration. Document the structure of formatSearchResults(), formatImageResults(), etc. as JSON Schema objects in the tool definition. Include field names, types, and descriptions so LLMs know what to expect.
• Implement pagination for search tools. Add page/offset and limit parameters (default limit=20, max=100). Return total_count and next_cursor in responses. Document in tool descriptions: 'Returns up to 20 results; use next_cursor to fetch more.'
• Enhance error messages with recovery guidance. Wrap SearxngError and network errors with context-aware suggestions: 'SearXNG unreachable. Verify SEARXNG_URL is set and the instance is running. Try list_engines() to test connectivity.'
• Set sensible defaults for fetch_content. Document timeout_ms default (e.g., 10000ms) and max_chars default (e.g., 50000) in parameter descriptions. Validate and reject values outside safe ranges (timeout 1000-60000ms, max_chars 1000-1000000).
• Add dependency hints to tool descriptions. E.g., search description: 'For specialized results, prefer image_search, news_search, video_search, or music_search. Call list_engines() first to see available search engines and categories.'