In C<gen-random-num> script:

 use {{module}};

 our %SPEC;

 $SPEC{gen_random_num} = {
     v => 1.1,
     summary => 'Generate some random numbers',
     args => {
         count => {
             summary => 'How many numbers to generate',
             schema => ['int*' => min=>0],
             default => 1,
             cmdline_aliases=>{n=>{}},
             req => 1,
             pos => 0,
         },
         min => {
             summary => 'Lower limit of random number',
             schema => 'float*',
             default => 0,
         },
         max => {
             summary => 'Upper limit of random number',
             schema => 'float*',
             default => 1,
         },
     },
     result_naked => 1,
 };
 sub gen_random_num {
     my %args = @_;

     my @res;
     for (1..$args{count}) {
         push @res, $args{min} + rand()*($args{max}-$args{min});
     }
     \@res;
 }

 {{module}}->new(url => '/main/gen_random_num')->run;

Run your script:

 % ./gen-random-num
 0.999473691060306

 % ./gen-random-num --min 1 --max 10 5
 1.27390166158969
 1.69077475473679
 8.97748327778684
 5.86943773494068
 8.34341298182493

JSON output support out of the box:

 % ./gen-random-num -n3 --json
 [200,"OK (envelope added by Perinci::Access::Lite)",[0.257073684902029,0.393782991540746,0.848740540017513],{}]

Automatic help message:

 % ./gen-random-num -h
 gen-random-num - Generate some random numbers

 Usage:
   gen-random-num --help (or -h, -?)
   gen-random-num --version (or -v)
   gen-random-num [options] [count]
 Options:
   --config-path=s     Set path to configuration file
   --config-profile=s  Set configuration profile to use
   --count=i, -n       How many numbers to generate (=arg[0]) [1]
   --format=s          Choose output format, e.g. json, text [undef]
   --help, -h, -?      Display this help message
   --json              Set output format to json
   --max=f             Upper limit of random number [1]
   --min=f             Lower limit of random number [0]
   --naked-res         When outputing as JSON, strip result envelope [0]
   --no-config         Do not use any configuration file
   --version, -v

Automatic configuration file support:

 % cat ~/gen-random-num.conf
 count=5
 max=0.01

 % ./gen-random-num
 0.00105268954838724
 0.00701443611501844
 0.0021247476506154
 0.00813872824513005
 0.00752832346491306

Automatic tab completion support:

 % complete -C gen-random-num gen-random-num
 % gen-random-num --mi<tab>

See the manual for details on other available features (subcommands, automatic
formatting of data structures, automatic schema validation, dry-run mode,
automatic POD generation, remote function support, automatic CLI generation,
automatic --version, automatic HTTP API, undo/transactions, configurable output
format, logging, progress bar, colors/Unicode, and more).

