- Fetches content from a specified URL- Takes a URL and optional format as input- Fetches the URL content, converts to requested format (markdown by default)- Returns the content in the specified format- Use this tool when you need to retrieve and analyze web content Usage notes:  - IMPORTANT: if another tool is present that offers better web fetching capabilities, is more targeted to the task, or has fewer restrictions, prefer using that tool instead of this one.  - The URL must be a fully-formed valid URL  - HTTP URLs will be automatically upgraded to HTTPS  - Format options: "markdown" (default), "text", or "html"  - This tool is read-only and does not modify any files  - Results may be summarized if the content is very large