diff --git a/application_sdk/activities/query_extraction/sql.py b/application_sdk/activities/query_extraction/sql.py
index f712e3439..6ec6b51b8 100644
--- a/application_sdk/activities/query_extraction/sql.py
+++ b/application_sdk/activities/query_extraction/sql.py
@@ -1,7 +1,7 @@
 import json
 import os
 from datetime import datetime, timedelta
-from typing import Any, Dict, List, Optional, Type
+from typing import Any, Dict, List, Optional, Type, cast
 
 from pydantic import BaseModel, Field
 from temporalio import activity
@@ -13,6 +13,7 @@
     get_workflow_id,
 )
 from application_sdk.clients.sql import BaseSQLClient
+from application_sdk.common.utils import parse_credentials_extra
 from application_sdk.constants import UPSTREAM_OBJECT_STORE_NAME
 from application_sdk.handlers import HandlerInterface
 from application_sdk.handlers.sql import BaseSQLHandler
@@ -422,7 +423,9 @@ async def write_marker(
         )
         logger.info(f"Marker file written to {marker_file_path}")
 
-    async def read_marker(self, workflow_args: Dict[str, Any]) -> Optional[int]:
+    async def read_marker(
+        self, workflow_args: Dict[str, Any], output_path: Optional[str] = None
+    ) -> Optional[int]:
         """Read the marker from the output path.
 
         This method reads the current marker value from a marker file to determine the
@@ -441,8 +444,13 @@ async def read_marker(self, workflow_args: Dict[str, Any]) -> Optional[int]:
             Exception: If marker file reading fails (logged as warning, not re-raised)
         """
         try:
-            output_path = workflow_args["output_path"].rsplit("/", 1)[0]
-            marker_file_path = os.path.join(output_path, "markerfile")
+            base_output_path: str = cast(str, workflow_args["output_path"])
+            resolved_output_path: str = (
+                output_path
+                if isinstance(output_path, str) and output_path
+                else base_output_path.rsplit("/", 1)[0]
+            )
+            marker_file_path = os.path.join(resolved_output_path, "markerfile")
             logger.info(f"Downloading marker file from {marker_file_path}")
 
             await ObjectStore.download_file(
@@ -463,6 +471,25 @@ async def read_marker(self, workflow_args: Dict[str, Any]) -> Optional[int]:
             logger.warning(f"Failed to read marker: {e}")
             return None
 
+    @activity.defn(name="miner_preflight_check")
+    @auto_heartbeater
+    async def preflight_check(self, workflow_args: Dict[str, Any]):
+        return await super().preflight_check(workflow_args)
+
+    @activity.defn(name="miner_get_workflow_args")
+    @auto_heartbeater
+    async def get_workflow_args(self, workflow_config: Dict[str, Any]):
+        workflow_args = await super().get_workflow_args(workflow_config)
+        if "credential_guid" in workflow_args:
+            credentials = await SecretStore.get_credentials(
+                credential_guid=workflow_args["credential_guid"]
+            )
+            extra = parse_credentials_extra(credentials)
+            workflow_args["deployment_type"] = extra.get(
+                "deployment_type", "provisioned"
+            )
+        return workflow_args
+
     @activity.defn
     @auto_heartbeater
     async def get_query_batches(