diff --git a/proto/buffer_service.proto b/proto/buffer_service.proto
index 96ea355..d7d989f 100644
--- a/proto/buffer_service.proto
+++ b/proto/buffer_service.proto
@@ -6,10 +6,20 @@ package buffer_service;
 service Buffer {
   // attach to a buffer and receive operations
   rpc Attach (stream Operation)    returns (stream Operation);
+
+  rpc Snapshot(SnapshotRequest) returns (SnapshotResponse);
+
 }
 
 message Operation {
   required bytes data = 1;
   optional string user = 2;
   optional string path = 3;
+}
+
+message SnapshotRequest {
+  required string path = 1;
+}
+message SnapshotResponse {
+  required string content = 1;
 }
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