diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2cd58ae..4773c5c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,6 +49,7 @@ rosidl_generate_interfaces(${PROJECT_NAME}
   "msg/HttpResponse.msg"
   "msg/MapIdNamePair.msg"
   "msg/GeoBoundary.msg"
+  "msg/StorageSummary.msg"
   "srv/FetchRouteNode.srv"
   "srv/ModifyRouteNode.srv"
   "srv/ModifyRouteEdge.srv"
@@ -66,6 +67,10 @@ rosidl_generate_interfaces(${PROJECT_NAME}
   "srv/ListBagRecordings.srv"
   "srv/DeleteMap.srv"
   "srv/ListMaps.srv"
+  "srv/StorageStartSession.srv"
+  "srv/StorageStopSession.srv"
+  "srv/StorageRemoveSession.srv"
+  "srv/StorageSaveSession.srv"
   "action/GenerateOfflineMap.action"
   DEPENDENCIES ${dependencies}
 )
diff --git a/msg/StorageSummary.msg b/msg/StorageSummary.msg
new file mode 100644
index 0000000..f507fac
--- /dev/null
+++ b/msg/StorageSummary.msg
@@ -0,0 +1,11 @@
+# Based on storage configuration, is storage available for recording?
+bool is_storage_available
+
+# Size of bags directory in bytes
+uint64 bags_dir_size_bytes
+
+# Available disk space in bytes
+uint64 available_disk_space_bytes
+
+# When was the summary updated last
+builtin_interfaces/Time last_updated
diff --git a/srv/StorageRemoveSession.srv b/srv/StorageRemoveSession.srv
new file mode 100644
index 0000000..0b83151
--- /dev/null
+++ b/srv/StorageRemoveSession.srv
@@ -0,0 +1,13 @@
+## Request
+
+# File/session name
+string name
+
+---
+## Response
+
+# Indicate successful run of service
+bool success
+
+# Error messages
+string error
diff --git a/srv/StorageSaveSession.srv b/srv/StorageSaveSession.srv
new file mode 100644
index 0000000..521cceb
--- /dev/null
+++ b/srv/StorageSaveSession.srv
@@ -0,0 +1,19 @@
+## Request
+
+# Start time for retention
+builtin_interfaces/Time start_time
+
+# End time for retention
+builtin_interfaces/Time end_time
+
+# Session suffix (optional, recommended)
+string session_suffix
+
+---
+## Response
+
+# Indicate successful run of service
+bool success
+
+# Error messages
+string error
diff --git a/srv/StorageStartSession.srv b/srv/StorageStartSession.srv
new file mode 100644
index 0000000..37221a6
--- /dev/null
+++ b/srv/StorageStartSession.srv
@@ -0,0 +1,13 @@
+## Request
+
+# Session suffix (optional, recommended)
+string session_suffix
+
+---
+## Response
+
+# Indicate successful run of service
+bool success
+
+# Error messages
+string error
diff --git a/srv/StorageStopSession.srv b/srv/StorageStopSession.srv
new file mode 100644
index 0000000..ee55984
--- /dev/null
+++ b/srv/StorageStopSession.srv
@@ -0,0 +1,10 @@
+## Request
+
+---
+## Response
+
+# Indicate successful run of service
+bool success
+
+# Error messages
+string error