You can send your dmesg from command line:
curl --data "$(dmesg)" "http://dmesg.openbsd.org.ru/upload?vendor=Apple&model=MacBook_Pro_2017_13&state=Bad"
Or if you're a cool hacker:
echo -ne "POST /upload?vendor=Apple&model=MacBook_Pro_2017_13&state=Bad HTTP/1.0\r\nHost: dmesg.openbsd.org.ru\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: $(dmesg|wc -c|tr -d )\r\n\r\n$(dmesg)\r\n" | nc dmesg.openbsd.org.ru 80