diff --git a/crunch/runner/unstructured.py b/crunch/runner/unstructured.py
index 6337d24..6e5e023 100644
--- a/crunch/runner/unstructured.py
+++ b/crunch/runner/unstructured.py
@@ -116,6 +116,8 @@ def trip_data_fuse(self) -> None:
         pass  # pragma: no cover
 
 
+_sentinel = object()
+
 class UserModule(ABC):
 
     def get_function(
@@ -129,6 +131,19 @@ def get_function(
 
         return function
 
+    def get_value(
+        self,
+        name: str,
+        *,
+        default: Optional[Any] = _sentinel,
+    ) -> Optional[Any]:
+        value = getattr(self.module, name, default)
+
+        if value is _sentinel and default is _sentinel:
+            raise ValueError(f"no `{name}` value found")
+
+        return value
+
     @property
     @abstractmethod
     def module(self) -> ModuleType: