diff --git a/backend/condition/condition_trigger_request.py b/backend/condition/condition_trigger_request.py
new file mode 100644
index 00000000..81cb6439
--- /dev/null
+++ b/backend/condition/condition_trigger_request.py
@@ -0,0 +1,6 @@
+from pydantic import BaseModel
+
+
+class ConditionTriggerRequest(BaseModel):
+    trigger_file_path: str  # TODO: split into bucket/prefix?
+    uprn_lookup_file_path: str  # TODO: split into bucket/prefix?
diff --git a/backend/condition/handler.py b/backend/condition/handler.py
index 21b7b1b8..18ac1da7 100644
--- a/backend/condition/handler.py
+++ b/backend/condition/handler.py
@@ -14,6 +14,7 @@ def handler(event: Mapping[str, Any], context: Any) -> None:
     uprn_lookup = UprnLookupS3(
         bucket="", key=""
     )  # TODO: replace with postgres implementation
+
     dummy_stream = BytesIO(b"")
 
     source_key = event.get("source_key", "unknown-source")