diff --git a/proto-docs/service.md b/proto-docs/service.md
index 2b6b33e..a690952 100644
--- a/proto-docs/service.md
+++ b/proto-docs/service.md
@@ -43,6 +43,7 @@ RequestMetaHeader contains information about request meta headers
 | TTL | [uint32](#uint32) |  | TTL must be larger than zero, it decreased in every NeoFS Node |
 | Epoch | [uint64](#uint64) |  | Epoch for user can be empty, because node sets epoch to the actual value |
 | Version | [uint32](#uint32) |  | Version defines protocol version TODO: not used for now, should be implemented in future |
+| Raw | [bool](#bool) |  | Raw determines whether the request is raw or not |
 
 
 <a name="service.ResponseMetaHeader"></a>
diff --git a/service/meta.proto b/service/meta.proto
index 99b37d3..093f118 100644
--- a/service/meta.proto
+++ b/service/meta.proto
@@ -17,6 +17,8 @@ message RequestMetaHeader {
     // Version defines protocol version
     // TODO: not used for now, should be implemented in future
     uint32 Version = 3;
+    // Raw determines whether the request is raw or not
+    bool Raw       = 4;
 }
 
 // ResponseMetaHeader contains meta information based on request processing by server