Use without data layers

defmodule Asher.Edge.FetchMyip do
  use Ash.Resource.Preparation

  def prepare(query, _, _) do
    case Req.get("https://httpbin.org/ip") do
      {:ok,
       %Req.Response{
         status: 200,
         body: data
       }} ->
        Ash.DataLayer.Simple.set_data(query, data)

      {:error, error} ->
        Ash.Query.add_error(query, "doh #{inspect(error)}")
    end
  end
end

iex(21)> Ash.Query.for_read(Asher.Edge.Myip, :read) |> Asher.Edge.read!()
** (Ash.Error.Unknown) Unknown Error

Context: resolving data on fetch Asher.Edge.Myip.read
* Context: resolving data on fetch Asher.Edge.Myip.read

** (KeyError) key :__metadata__ not found in: %{"origin" => "80.208.68.43"}
  (ash 2.14.12) lib/ash/resource.ex:267: Ash.Resource.set_metadata/2
.....