Single tool with clear naming (fetch_url) and good descriptions. Input schema is properly defined with Zod validation and URL constraint. Output schema documented. Tool annotations present (readOnlyHint, idempotentHint, openWorldHint). However, parameter descriptions are minimal (single sentence), error handling returns raw error messages without recovery guidance, and no pagination/limit controls despite fetching arbitrary URLs. Output structure is reasonable but could be more explicit about what markdown content contains.

• Enhance parameter description: 'The public URL to fetch and convert to markdown. Must be publicly accessible (no authentication required). Supports news sites, documentation, GitHub, wikis. Timeout: 20 seconds. Returns markdown-formatted content or error if site is blocked by anti-bot protection.'
• Add error recovery guidance in catch block: Instead of returning raw error message, categorize as 'blocked_by_protection', 'timeout', 'invalid_url', or 'empty_response' and suggest next action (e.g., 'Site protected by Cloudflare. Try searching for cached/archived version instead.').
• Document output constraints in schema description: Add note that markdown field may be very large (up to several MB); LLM should truncate if needed. Clarify that content is cleaned/normalized by create360.ai service.
• Add rate-limit awareness: Document that tool respects HTTP rate limits from create360.ai; if rate-limited, error message should suggest retry delay.
• Consider adding optional parameters for robustness: e.g., 'timeout_ms' (default 20000, range 5000-60000) and 'include_metadata' (default false) to return source URL, fetch timestamp, and content length alongside markdown.