promtool check --help

promtool check --help
usage: promtool check [<flags>] <command> [<args> ...]

Check the resources for validity.

Flags:
  -h, --help                 Show context-sensitive help (also try --help-long and --help-man).
      --version              Show application version.
      --enable-feature= ...  Comma separated feature names to enable (only PromQL related and no-default-scrape-port). See https://prometheus.io/docs/prometheus/latest/feature_flags/ for the options and more
                             details.
      --extended             Print extended information related to the cardinality of the metrics.

Subcommands:
  check service-discovery [<flags>] <config-file> <job>
    Perform service discovery for the given job name and report the results, including relabeling.

  check config [<flags>] <config-files>...
    Check if the config files are valid or not.

  check web-config <web-config-files>...
    Check if the web config files are valid or not.

  check rules [<flags>] <rule-files>...
    Check if the rule files are valid or not.

  check metrics
    Pass Prometheus metrics over stdin to lint them for consistency and correctness.

    examples:

    $ cat metrics.prom | promtool check metrics

    $ curl -s http://localhost:9090/metrics | promtool check metrics

Prometheus: promtool | check | tsbd | --help