diff --git a/logos_delivery/logos_delivery.nim b/logos_delivery/logos_delivery.nim
index 8f22b397f..3c0f61d10 100644
--- a/logos_delivery/logos_delivery.nim
+++ b/logos_delivery/logos_delivery.nim
@@ -11,6 +11,9 @@
 
 import results, chronos, chronicles
 
+import logos_delivery/api/logos_delivery_api
+export logos_delivery_api
+
 # Each layer has a core module (type + new/start/stop) and an api/ folder whose
 # modules each implement a differentiated set of operations, plus an events
 # surface. The concentrator re-exports them so library consumers get the full
@@ -65,7 +68,8 @@ type
     messaging*: MessagingClientConf
     reliableChannel*: ReliableChannelManagerConf
 
-  LogosDelivery* = ref object ## Entry point. Holds one instance of each API layer.
+  LogosDelivery* = ref object of ILogosDelivery
+    ## Entry point. Holds one instance of each API layer.
     waku*: Waku
     messagingClient*: MessagingClient
     reliableChannelManager*: ReliableChannelManager
@@ -109,7 +113,7 @@ proc new*(
     )
   )
 
-proc start*(self: LogosDelivery): Future[Result[void, string]] {.async.} =
+method start*(self: LogosDelivery): Future[Result[void, string]] {.async.} =
   ## Starts each layer bottom-up: transport first, then messaging, then channels.
   if self.waku.isNil():
     return err("Waku node is not initialized")
@@ -129,7 +133,7 @@ proc start*(self: LogosDelivery): Future[Result[void, string]] {.async.} =
 
   return ok()
 
-proc stop*(self: LogosDelivery): Future[Result[void, string]] {.async.} =
+method stop*(self: LogosDelivery): Future[Result[void, string]] {.async.} =
   ## Stops in reverse order so higher layers drain before their dependencies.
   await self.reliableChannelManager.stop()
   await self.messagingClient.stop()
@@ -139,7 +143,7 @@ proc stop*(self: LogosDelivery): Future[Result[void, string]] {.async.} =
 
   return ok()
 
-proc isOnline*(self: LogosDelivery): Future[Result[bool, string]] {.async.} =
+method isOnline*(self: LogosDelivery): Future[Result[bool, string]] {.async.} =
   if self.waku.isNil():
     return err("Waku node is not initialized")
   return ok(self.waku.healthMonitor.onlineMonitor.amIOnline())