diff --git a/mofa/fragment.py b/mofa/fragment.py
index 5db92df2..4f1abcd2 100644
--- a/mofa/fragment.py
+++ b/mofa/fragment.py
@@ -5,4 +5,19 @@
 
 from model import MOFRecord
 
+def fragment_mof_linkers(
+        starting_model: str | Path,
+        examples: list[MOFRecord],
+        num_epochs: int
+) -> Path:
+    """Fragment linkers of MOFs
+
+    Args:
+        starting_model: Path to the starting weights of the model
+        examples: Seed examples of linkers (data model TBD)
+        num_epochs: Number of training epochs
+    Returns:
+        Path to the new model weights
+    """
+    raise NotImplementedError()