{
  pkgs,
  system,
  jailed-agents,
  mcp-servers,
}:
pkgs.mkShell {
  packages =
    with pkgs;
    [
      nixfmt-rfc-style
      nil
      nix-tree
      (jailed-agents.lib.${system}.makeJailed system {
        agentTool = "opencode";
        extraPkgs =
          (with pkgs; [ mcp-nixos ])
          ++ (with mcp-servers.packages.${system}; [ duckduckgo-mcp-server ]);
      })
    ];

  shellHook = ''
    echo "Nix packages development environment"
    echo "Available tools: nixfmt-rfc-style, nil, nix-tree, opencode (jailed agent)"
  '';
}