diff --git a/lib/agens.ex b/lib/agens.ex
index f2da0c5..5d06cd9 100644
--- a/lib/agens.ex
+++ b/lib/agens.ex
@@ -24,76 +24,6 @@ defmodule Agens do
   - `Agens.Message` - used to facilitate communication between agents, jobs, and servings
   """
 
-  defmodule Prefixes do
-    @moduledoc """
-    The Prefixes struct represents configurable prompt prefixes used in Agens.
-    """
-
-    @type pair :: {heading :: String.t(), detail :: String.t()}
-    @type t :: %__MODULE__{
-            prompt: pair(),
-            identity: pair(),
-            context: pair(),
-            constraints: pair(),
-            examples: pair(),
-            reflection: pair(),
-            instructions: pair(),
-            objective: pair(),
-            description: pair(),
-            input: pair()
-          }
-
-    @enforce_keys [
-      :prompt,
-      :identity,
-      :context,
-      :constraints,
-      :examples,
-      :reflection,
-      :instructions,
-      :objective,
-      :description,
-      :input
-    ]
-    defstruct [
-      :prompt,
-      :identity,
-      :context,
-      :constraints,
-      :examples,
-      :reflection,
-      :instructions,
-      :objective,
-      :description,
-      :input
-    ]
-
-    def default() do
-      %__MODULE__{
-        prompt:
-          {"Agent", "You are a specialized agent with the following capabilities and expertise"},
-        identity:
-          {"Identity",
-           "You are a specialized agent with the following capabilities and expertise"},
-        context: {"Context", "The purpose or goal behind your tasks are to"},
-        constraints:
-          {"Constraints", "You must operate with the following constraints or limitations"},
-        examples:
-          {"Examples", "You should consider the following examples before returning results"},
-        reflection:
-          {"Reflection", "You should reflect on the following factors before returning results"},
-        instructions:
-          {"Tool Instructions",
-           "You should provide structured output for function calling based on the following instructions"},
-        objective: {"Step Objective", "The objective of this step is to"},
-        description:
-          {"Job Description", "This is part of multi-step job to achieve the following"},
-        input:
-          {"Input", "The following is the actual input from the user, system or another agent"}
-      }
-    end
-  end
-
   use DynamicSupervisor
 
   @doc false
diff --git a/lib/agens/prefixes.ex b/lib/agens/prefixes.ex
new file mode 100644
index 0000000..3e6cd4e
--- /dev/null
+++ b/lib/agens/prefixes.ex
@@ -0,0 +1,66 @@
+defmodule Agens.Prefixes do
+  @moduledoc """
+  The Prefixes struct represents configurable prompt prefixes used in Agens.
+  """
+
+  @type pair :: {heading :: String.t(), detail :: String.t()}
+  @type t :: %__MODULE__{
+          prompt: pair(),
+          identity: pair(),
+          context: pair(),
+          constraints: pair(),
+          examples: pair(),
+          reflection: pair(),
+          instructions: pair(),
+          objective: pair(),
+          description: pair(),
+          input: pair()
+        }
+
+  @enforce_keys [
+    :prompt,
+    :identity,
+    :context,
+    :constraints,
+    :examples,
+    :reflection,
+    :instructions,
+    :objective,
+    :description,
+    :input
+  ]
+  defstruct [
+    :prompt,
+    :identity,
+    :context,
+    :constraints,
+    :examples,
+    :reflection,
+    :instructions,
+    :objective,
+    :description,
+    :input
+  ]
+
+  def default() do
+    %__MODULE__{
+      prompt:
+        {"Agent", "You are a specialized agent with the following capabilities and expertise"},
+      identity:
+        {"Identity", "You are a specialized agent with the following capabilities and expertise"},
+      context: {"Context", "The purpose or goal behind your tasks are to"},
+      constraints:
+        {"Constraints", "You must operate with the following constraints or limitations"},
+      examples:
+        {"Examples", "You should consider the following examples before returning results"},
+      reflection:
+        {"Reflection", "You should reflect on the following factors before returning results"},
+      instructions:
+        {"Tool Instructions",
+         "You should provide structured output for function calling based on the following instructions"},
+      objective: {"Step Objective", "The objective of this step is to"},
+      description: {"Job Description", "This is part of multi-step job to achieve the following"},
+      input: {"Input", "The following is the actual input from the user, system or another agent"}
+    }
+  end
+end
diff --git a/test/agens/prefixes_test.exs b/test/agens/prefixes_test.exs
new file mode 100644
index 0000000..fec1846
--- /dev/null
+++ b/test/agens/prefixes_test.exs
@@ -0,0 +1,36 @@
+defmodule Agens.PrefixesTest do
+  use ExUnit.Case, async: false
+
+  alias Agens.Prefixes
+
+  describe "prefixes" do
+    test "default" do
+      assert %Prefixes{
+               prompt:
+                 {"Agent",
+                  "You are a specialized agent with the following capabilities and expertise"},
+               identity:
+                 {"Identity",
+                  "You are a specialized agent with the following capabilities and expertise"},
+               context: {"Context", "The purpose or goal behind your tasks are to"},
+               constraints:
+                 {"Constraints", "You must operate with the following constraints or limitations"},
+               examples:
+                 {"Examples",
+                  "You should consider the following examples before returning results"},
+               reflection:
+                 {"Reflection",
+                  "You should reflect on the following factors before returning results"},
+               instructions:
+                 {"Tool Instructions",
+                  "You should provide structured output for function calling based on the following instructions"},
+               objective: {"Step Objective", "The objective of this step is to"},
+               description:
+                 {"Job Description", "This is part of multi-step job to achieve the following"},
+               input:
+                 {"Input",
+                  "The following is the actual input from the user, system or another agent"}
+             } = Prefixes.default()
+    end
+  end
+end