Short: v Long: verbose Mutexed: trace trace-ascii Help: Make the operation more talkative See-also: include --- Makes curl verbose during the operation. Useful for debugging and seeing what's going on "under the hood". A line starting with '>' means "header data" sent by curl, '<' means "header data" received by curl that is hidden in normal cases, and a line starting with '*' means additional info provided by curl. If you only want HTTP headers in the output, --include might be the option you're looking for. If you think this option still doesn't give you enough details, consider using --trace or --trace-ascii instead. Use --silent to make curl really quiet.