diff --git a/task_module.py b/task_module.py
new file mode 100644
index 0000000..0000001
--- /dev/null
+++ b/task_module.py
@@ -0,0 +1,31 @@
+from graphene import Scalar
+from graphql.error import GraphQLError
+from graphql.language import StringValueNode
+
+class HexScalar(Scalar):
+    """
+    The `Hex` scalar type represents a hexadecimal-encoded String.
+    """
+
+    @staticmethod
+    def serialize(value):
+        if isinstance(value, bytes):
+            return value.hex()
+        else:
+            value = str(value).encode("utf-8")
+            return value.hex()
+
+    @classmethod
+    def parse(cls, value):
+        try:
+            return bytes.fromhex(value)
+        except ValueError as e:
+            raise GraphQLError(f"Invalid hex string: {value}")
+
+    @classmethod
+    def parse_literal(cls, node, _variables=None):
+        if not isinstance(node, StringValueNode):
+            raise GraphQLError(
+                f"Hex cannot represent non-string value"
+            )
+        return cls.parse(node.value)
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