diff --git a/services/commtest/tests/blob/blob_utils.rs b/services/commtest/tests/blob/blob_utils.rs
new file mode 100644
--- /dev/null
+++ b/services/commtest/tests/blob/blob_utils.rs
@@ -0,0 +1,12 @@
+pub mod proto {
+  tonic::include_proto!("blob");
+}
+
+pub use proto::blob_service_client::BlobServiceClient;
+
+#[allow(dead_code)]
+pub struct BlobData {
+  pub holder: String,
+  pub hash: String,
+  pub chunks_sizes: Vec<usize>,
+}