Install sandbox-cli
sandbox-cli is availabe as sandbox-cli on PyPi.
Can be installed with pipx (recommeded) or pip:
Also available as Nix package with configuration customization:
First, add repo to flake inputs:
flake.nix
{
  inputs = {
    sandbox-cli = {
      url = "github:Security-Experts-Community/sandbox-cli";
    };
  };
}
Second, write the config for your home-manager configuration (programs.sandbox-cli.settings is 1-1 mapping of the configuration)
module.nix
{ inputs, lib, pkgs, ... }:
{
  imports = [
    inputs.sandbox-cli.homeManagerModules.default
  ];
  programs.sandbox-cli = {
    enable = true;
    settings = {
      sandbox = [
        {
          name = "sample-key-name";
          key = "sample-key";
          host = "127.0.0.1";
          max-workers = 1;
        }
      ];
    };
  };
}
Alternatively you can install the only sandbox-cli app to your environment and write config by hand:
Alternatively you can use overlay from inputs.sandbox-cli.overlays.default