curl --fail

 -f, --fail          Fail silently (no output at all) on HTTP errors

Related

curl -s
healthz
curl -sSfL
curl -fsSL

See also

• cURL, curl -s, -X, -x, curl -T, curl --help, curl -L, curl -o, curl -X POST, curl -d, curl --header, curl -I, curl --silent, curl -Is, curl -k or curl --insecure, curl -XPUT, curl -d, ~/.curlrc, curl -i, curl --version, curl --help