diff --git a/dev/v1.ex b/dev/v1.ex
new file mode 100644
index 0000000..d959af4
--- /dev/null
+++ b/dev/v1.ex
@@ -0,0 +1,13 @@
+defmodule Inngest.Dev.EventFn2 do
+  @moduledoc false
+
+  use Inngest.V1.Function
+  alias Inngest.Function.{Opts, Trigger}
+
+  @fn_opts %Opts{name: "test func v2"}
+  @trigger %Trigger{event: "test/hello"}
+
+  def run(args) do
+    {:ok, "Hello world"}
+  end
+end
diff --git a/lib/inngest/v1/function.ex b/lib/inngest/v1/function.ex
new file mode 100644
index 0000000..1a31f81
--- /dev/null
+++ b/lib/inngest/v1/function.ex
@@ -0,0 +1,17 @@
+defmodule Inngest.V1.Function do
+  alias Inngest.Config
+end
+
+defmodule Inngest.Function.Opts do
+  defstruct [
+    :id,
+    :name,
+    :retries
+  ]
+
+  @type t() :: %__MODULE__{
+          id: binary(),
+          name: binary(),
+          retries: number()
+        }
+end