diff --git a/proto/controlclient.proto b/proto/controlclient.proto
index bd1d9f6..771fc4f 100644
--- a/proto/controlclient.proto
+++ b/proto/controlclient.proto
@@ -15,6 +15,37 @@ service ScsControl {
   rpc CreateSigningKey (_CreateSigningKeyRequest) returns (_CreateSigningKeyResponse) {}
   rpc RevokeSigningKey (_RevokeSigningKeyRequest) returns (_RevokeSigningKeyResponse) {}
   rpc ListSigningKeys (_ListSigningKeysRequest) returns (_ListSigningKeysResponse) {}
+  rpc CreateIndex (_CreateIndexRequest) returns (_CreateIndexRequest) {}
+  rpc DeleteIndex(_DeleteIndexRequest) returns (_DeleteIndexResponse) {}
+  rpc ListIndexes(_ListIndexesRequest) returns (_ListIndexesResponse) {}
+}
+
+message _CreateIndexRequest {
+  string index_name = 1;
+  uint64 num_dimensions = 2;
+}
+
+message _CreateIndexResponse {
+}
+
+message _DeleteIndexRequest {
+  string index_name = 1;
+}
+
+message _DeleteIndexResponse {
+}
+
+message _ListIndexesRequest {
+  string next_token = 1;
+}
+
+message _ListIndexesResponse {
+  repeated _Index indexes = 1;
+  string next_token = 2;
+}
+
+message _Index {
+  string index_name = 1;
 }
 
 message _DeleteCacheRequest {