To receive help, just run:

./pism --help
Software for a hardware security module

Usage:
  ./pism [command]

Available Commands:
  help            Help about any command
  keepassimport   Imports data from Keepass format
  server          Starts the server
  ssh-agent-proxy Starts the SSH agent proxy, which will forward SSH signing requests to pi-security-module

Flags:
  -h, --help      help for ./pism
      --version   version for ./pism

Use "./pism [command] --help" for more information about a command.

Any subcommand will also give you help:

./pism server --help
Starts the server

Usage:
  ./pism server [flags]
  ./pism server [command]

Available Commands:
  init-config                 Initializes configuration file
  install                     Installs systemd unit file to make pi-security-module start on system boot
  print-signingapi-auth-token Displays the auth token required to use the signing API

Flags:
  -h, --help   help for server

Use "./pism server [command] --help" for more information about a command.