diff --git a/src/syndicate/protocols/noise.nim b/src/syndicate/protocols/noise.nim
index ffbdbdf..230c180 100644
--- a/src/syndicate/protocols/noise.nim
+++ b/src/syndicate/protocols/noise.nim
@@ -48,6 +48,17 @@ type
         `absent`*: SecretKeyFieldAbsent
 
   
+  SessionItemKind* {.pure.} = enum
+    `Initiator`, `Packet`
+  `SessionItem`* {.preservesOr.} = object
+    case orKind*: SessionItemKind
+    of SessionItemKind.`Initiator`:
+        `initiator`* {.preservesEmbedded.}: Initiator
+
+    of SessionItemKind.`Packet`:
+        `packet`*: Packet
+
+  
   NoiseProtocolKind* {.pure.} = enum
     `present`, `invalid`, `absent`
   NoiseProtocolPresent* {.preservesDictionary.} = object
@@ -83,6 +94,9 @@ type
     `service`*: ServiceSelector
 
   ServiceSelector* = Value
+  Initiator* {.preservesRecord: "initiator".} = object
+    `initiatorSession`* {.preservesEmbedded.}: EmbeddedRef
+
   NoiseStepDetail* = ServiceSelector
   NoiseSpecKey* = seq[byte]
   NoiseSpecPreSharedKeys* = Option[Value]
@@ -105,17 +119,21 @@ type
 
   
 proc `$`*(x: NoiseDescriptionDetail | NoisePreSharedKeys | SecretKeyField |
+    SessionItem |
     NoiseProtocol |
     NoisePathStepDetail |
     NoiseServiceSpec |
+    Initiator |
     NoiseSpec |
     Packet): string =
   `$`(toPreserves(x))
 
 proc encode*(x: NoiseDescriptionDetail | NoisePreSharedKeys | SecretKeyField |
+    SessionItem |
     NoiseProtocol |
     NoisePathStepDetail |
     NoiseServiceSpec |
+    Initiator |
     NoiseSpec |
     Packet): seq[byte] =
   encode(toPreserves(x))