mcp-pin: @toolstop/check-digits https://mcp-pin.gautamkhosla.com/servers/19cd20e374525d99.htmlTool definition changes@toolstop/check-digits tools changed https://mcp-pin.gautamkhosla.com/servers/19cd20e374525d99.html25fde2eeb86e58dbf3940d5fb1b827af451bbff6a56313a578d887b75bf91ce3 Thu, 03 Sep 2026 07:01:47 GMT compute_luhn_digit, identify_format, validate_identifier