diff --git a/raystack/frontier/v1beta1/frontier.proto b/raystack/frontier/v1beta1/frontier.proto
index 38c87f52..0431232e 100644
--- a/raystack/frontier/v1beta1/frontier.proto
+++ b/raystack/frontier/v1beta1/frontier.proto
@@ -1763,6 +1763,9 @@ message ListSubscriptionsRequest {
   string org_id = 1 [(validate.rules).string.min_len = 3];
   // ID of the billing account to list subscriptions for
   string billing_id = 2 [(validate.rules).string.min_len = 1];
+  
+  // Filter subscriptions by state
+  string state = 3;
 }
 
 message ListSubscriptionsResponse {
@@ -1848,14 +1851,16 @@ message ListCheckoutsResponse {
 }
 
 message ProductRequestBody {
+  reserved 7;
+
   string name = 1;
   string title = 2;
   string description = 3;
   string plan_id = 4;
   repeated Price prices = 5;
-  int64 credit_amount = 7;
   string behavior = 8;
   repeated Feature features = 9;
+  Product.BehaviorConfig behavior_config = 10;
 
   google.protobuf.Struct metadata = 20;
 }
@@ -1906,6 +1911,7 @@ message PlanRequestBody {
 
   repeated Product products = 4;
   string interval = 5; // known intervals are "day", "week", "month", and "year"
+  int64 on_start_credits = 6;
 
   google.protobuf.Struct metadata = 20;
 }
diff --git a/raystack/frontier/v1beta1/models.proto b/raystack/frontier/v1beta1/models.proto
index 9804b869..336f553f 100644
--- a/raystack/frontier/v1beta1/models.proto
+++ b/raystack/frontier/v1beta1/models.proto
@@ -621,6 +621,7 @@ message Plan {
   string description = 4;
   repeated Product products = 5;
   string interval = 6; // known intervals are "day", "week", "month", and "year"
+  int64 on_start_credits = 7;
 
   google.protobuf.Struct metadata = 20;
   google.protobuf.Timestamp created_at = 21;
@@ -628,6 +629,12 @@ message Plan {
 }
 
 message Product {
+  reserved 8;
+  message BehaviorConfig {
+    int64 credit_amount = 1;
+    int64 seat_limit = 2;
+  }
+
   string id = 1;
   string name = 2;
   string title = 3;
@@ -636,9 +643,9 @@ message Product {
   string state = 6;
 
   repeated Price prices = 7;
-  int64 credit_amount = 8;
   string behavior = 9;
   repeated Feature features = 10;
+  BehaviorConfig behavior_config = 11;
 
   google.protobuf.Struct metadata = 20;
   google.protobuf.Timestamp created_at = 21;