diff --git a/apps/liteprotocoltester/statistics.nim b/apps/liteprotocoltester/statistics.nim
index 7feebd4cf..ed9a6c214 100644
--- a/apps/liteprotocoltester/statistics.nim
+++ b/apps/liteprotocoltester/statistics.nim
@@ -10,6 +10,7 @@ import
 
 from std/sugar import `=>`
 
+import logos_delivery/waku/compat/option_valueor
 import ./tester_message, ./lpt_metrics
 
 type
diff --git a/library/logos_delivery_api/node_api.nim b/library/logos_delivery_api/node_api.nim
index 354ab3a98..8f0ee3921 100644
--- a/library/logos_delivery_api/node_api.nim
+++ b/library/logos_delivery_api/node_api.nim
@@ -3,9 +3,9 @@ import chronos, chronicles, results, ffi
 import
   logos_delivery,
   logos_delivery/waku/node/waku_node,
-  logos_delivery/waku/events/message_events,
+  logos_delivery/api/messaging_client_api,
   logos_delivery/api/types,
-  logos_delivery/waku/events/[message_events, health_events],
+  logos_delivery/waku/events/health_events,
   tools/confutils/conf_from_json,
   ../declare_lib,
   ../json_event
@@ -116,7 +116,7 @@ proc logosdelivery_start_node(
     chronicles.error "MessageReceivedEvent.listen failed", err = $error
     return err("MessageReceivedEvent.listen failed: " & $error)
 
-  let ConnectionStatusChangeListener = EventConnectionStatusChange.listen(
+  discard EventConnectionStatusChange.listen(
     ctx.myLib[].waku.brokerCtx,
     proc(event: EventConnectionStatusChange) {.async: (raises: []).} =
       callEventCallback(ctx, "onConnectionStatusChange"):
diff --git a/logos_delivery/api/kernel_api.nim b/logos_delivery/api/kernel_api.nim
new file mode 100644
index 000000000..ea64eab22
--- /dev/null
+++ b/logos_delivery/api/kernel_api.nim
@@ -0,0 +1,202 @@
+import std/options
+import chronos, results
+import brokers/event_broker
+
+import logos_delivery/api/types as api_types
+import logos_delivery/waku/waku_core/topics/pubsub_topic
+import logos_delivery/waku/waku_store/common as store_types
+
+export event_broker
+export api_types, pubsub_topic, store_types
+
+type IKernel* = ref object of RootObj
+
+EventBroker:
+  # Internal event emitted when a message arrives from the network via any protocol
+  type MessageSeenEvent* = object
+    topic*: PubsubTopic
+    message*: WakuMessage
+
+# --- topic construction ---
+method buildContentTopic*(
+    self: IKernel, appName: string, appVersion: uint32, name: string, encoding: string
+): Future[Result[ContentTopic, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.buildContentTopic not implemented")
+
+method buildPubsubTopic*(
+    self: IKernel, topicName: string
+): Future[Result[PubsubTopic, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.buildPubsubTopic not implemented")
+
+method defaultPubsubTopic*(
+    self: IKernel
+): Future[Result[PubsubTopic, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.defaultPubsubTopic not implemented")
+
+# --- relay ---
+method relayPublish*(
+    self: IKernel, pubsubTopic: PubsubTopic, message: WakuMessage, timeoutMs: uint32
+): Future[Result[int, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.relayPublish not implemented")
+
+method relaySubscribe*(
+    self: IKernel, pubsubTopic: PubsubTopic
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.relaySubscribe not implemented")
+
+method relayUnsubscribe*(
+    self: IKernel, pubsubTopic: PubsubTopic
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.relayUnsubscribe not implemented")
+
+method relayAddProtectedShard*(
+    self: IKernel, clusterId: uint16, shardId: uint16, publicKey: string
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.relayAddProtectedShard not implemented")
+
+method relayConnectedPeers*(
+    self: IKernel, pubsubTopic: PubsubTopic
+): Future[Result[seq[string], string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.relayConnectedPeers not implemented")
+
+method relayPeersInMesh*(
+    self: IKernel, pubsubTopic: PubsubTopic
+): Future[Result[seq[string], string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.relayPeersInMesh not implemented")
+
+# --- filter ---
+method filterSubscribe*(
+    self: IKernel,
+    pubsubTopic: Option[PubsubTopic],
+    contentTopics: seq[ContentTopic],
+    peer: string,
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.filterSubscribe not implemented")
+
+method filterUnsubscribe*(
+    self: IKernel,
+    pubsubTopic: Option[PubsubTopic],
+    contentTopics: seq[ContentTopic],
+    peer: string,
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.filterUnsubscribe not implemented")
+
+method filterUnsubscribeAll*(
+    self: IKernel, peer: string
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.filterUnsubscribeAll not implemented")
+
+# --- lightpush ---
+method lightpushPublish*(
+    self: IKernel, pubsubTopic: PubsubTopic, message: WakuMessage, peer: string
+): Future[Result[string, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.lightpushPublish not implemented")
+
+# --- store ---
+method storeQuery*(
+    self: IKernel, request: StoreQueryRequest, peer: string, timeoutMs: int
+): Future[Result[StoreQueryResponse, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.storeQuery not implemented")
+
+# --- peer management ---
+method connect*(
+    self: IKernel, peers: seq[string], timeoutMs: uint32
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.connect not implemented")
+
+method disconnectPeerById*(
+    self: IKernel, peerId: string
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.disconnectPeerById not implemented")
+
+method disconnectAllPeers*(
+    self: IKernel
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.disconnectAllPeers not implemented")
+
+method dialPeer*(
+    self: IKernel, peerAddr: string, protocol: string, timeoutMs: int
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.dialPeer not implemented")
+
+method dialPeerById*(
+    self: IKernel, peerId: string, protocol: string, timeoutMs: int
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.dialPeerById not implemented")
+
+method peerIdsFromPeerstore*(
+    self: IKernel
+): Future[Result[seq[string], string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.peerIdsFromPeerstore not implemented")
+
+method connectedPeersInfo*(
+    self: IKernel
+): Future[Result[seq[string], string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.connectedPeersInfo not implemented")
+
+method connectedPeers*(
+    self: IKernel
+): Future[Result[seq[string], string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.connectedPeers not implemented")
+
+method peerIdsByProtocol*(
+    self: IKernel, protocol: string
+): Future[Result[seq[string], string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.peerIdsByProtocol not implemented")
+
+# --- discovery ---
+method dnsDiscovery*(
+    self: IKernel, enrTreeUrl: string, nameServer: string, timeoutMs: int
+): Future[Result[seq[string], string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.dnsDiscovery not implemented")
+
+method discv5UpdateBootnodes*(
+    self: IKernel, bootnodes: seq[string]
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.discv5UpdateBootnodes not implemented")
+
+method startDiscv5*(
+    self: IKernel
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.startDiscv5 not implemented")
+
+method stopDiscv5*(
+    self: IKernel
+): Future[Result[bool, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.stopDiscv5 not implemented")
+
+method peerExchangeRequest*(
+    self: IKernel, numPeers: uint64
+): Future[Result[int, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.peerExchangeRequest not implemented")
+
+# --- debug / info ---
+method version*(
+    self: IKernel
+): Future[Result[string, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.version not implemented")
+
+method listenAddresses*(
+    self: IKernel
+): Future[Result[seq[string], string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.listenAddresses not implemented")
+
+method myEnr*(
+    self: IKernel
+): Future[Result[string, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.myEnr not implemented")
+
+method myPeerId*(
+    self: IKernel
+): Future[Result[string, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.myPeerId not implemented")
+
+method metrics*(
+    self: IKernel
+): Future[Result[string, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.metrics not implemented")
+
+method pingPeer*(
+    self: IKernel, peerAddr: string, timeoutMs: int
+): Future[Result[int64, string]] {.async: (raises: []), base.} =
+  return err("Interface IKernel.pingPeer not implemented")
diff --git a/logos_delivery/api/logos_delivery_api.nim b/logos_delivery/api/logos_delivery_api.nim
new file mode 100644
index 000000000..162159d8e
--- /dev/null
+++ b/logos_delivery/api/logos_delivery_api.nim
@@ -0,0 +1,33 @@
+## `LogosDelivery` is the project entry point. It is a pure concentrator: it
+## owns exactly one instance of each API layer
+##
+##   Waku  <-  MessagingClient  <-  ReliableChannelManager
+##
+## and chains them together (each layer drives the one below it). Every layer
+## keeps its own, separate public API — `LogosDelivery` only wires them up and
+## drives the shared `new` / `start` / `stop` lifecycle.
+
+{.push raises: [].}
+
+import results, chronos
+import brokers/event_broker
+import types as api_types
+
+export api_types, event_broker
+
+type
+  ## Entry point. Holds one instance of each API layer.
+  ILogosDelivery* = ref object of RootObj
+
+EventBroker:
+  type EventConnectionStatusChange* = object
+    connectionStatus*: ConnectionStatus
+
+method start*(self: ILogosDelivery): Future[Result[void, string]] {.async, base.} =
+  return err("ILogosDelivery.start not implemented")
+
+method stop*(self: ILogosDelivery): Future[Result[void, string]] {.async, base.} =
+  return err("ILogosDelivery.stop not implemented")
+
+method isOnline*(self: ILogosDelivery): Future[Result[bool, string]] {.async, base.} =
+  return err("ILogosDelivery.isOnline not implemented")
diff --git a/logos_delivery/api/messaging_client_api.nim b/logos_delivery/api/messaging_client_api.nim
new file mode 100644
index 000000000..46acec3bc
--- /dev/null
+++ b/logos_delivery/api/messaging_client_api.nim
@@ -0,0 +1,48 @@
+import chronos, results
+import brokers/event_broker
+
+import logos_delivery/api/types as api_types
+
+export event_broker, api_types
+
+type IMessagingClient* = ref object of RootObj
+
+EventBroker:
+  # Event emitted when a message is sent to the network
+  type MessageSentEvent* = object
+    requestId*: RequestId
+    messageHash*: string
+
+EventBroker:
+  # Event emitted when a message send operation fails
+  type MessageErrorEvent* = object
+    requestId*: RequestId
+    messageHash*: string
+    error*: string
+
+EventBroker:
+  # Confirmation that a message has been correctly delivered to some neighbouring nodes.
+  type MessagePropagatedEvent* = object
+    requestId*: RequestId
+    messageHash*: string
+
+EventBroker:
+  # Event emitted when a message is received via Waku
+  type MessageReceivedEvent* = object
+    messageHash*: string
+    message*: WakuMessage
+
+method subscribe*(
+    self: IMessagingClient, contentTopic: ContentTopic
+): Future[Result[void, string]] {.async: (raises: []), base.} =
+  return err("Interface IMessagingClient.subscribe not implemented")
+
+method unsubscribe*(
+    self: IMessagingClient, contentTopic: ContentTopic
+): Result[void, string] {.base, raises: [].} =
+  return err("Interface IMessagingClient.unsubscribe not implemented")
+
+method send*(
+    self: IMessagingClient, envelope: MessageEnvelope
+): Future[Result[RequestId, string]] {.async: (raises: []), base.} =
+  return err("Interface IMessagingClient.send not implemented")
diff --git a/logos_delivery/api/reliable_channel_manager_api.nim b/logos_delivery/api/reliable_channel_manager_api.nim
new file mode 100644
index 000000000..206ef0df7
--- /dev/null
+++ b/logos_delivery/api/reliable_channel_manager_api.nim
@@ -0,0 +1,62 @@
+import chronos, results
+
+import brokers/event_broker
+
+import logos_delivery/api/types as api_types
+
+export event_broker, api_types
+
+type
+  IReliableChannelManager* = ref object of RootObj
+
+  SendHandler* = proc(envelope: MessageEnvelope): Future[Result[RequestId, string]] {.
+    async: (raises: [CatchableError]), gcsafe
+  .}
+    ## Egress dispatch boundary. Typically wraps `MessagingClient.send`;
+    ## tests inject a fake that records calls and returns canned
+    ## `RequestId`s so the send state machine can be exercised end-to-end
+    ## without a network.
+
+EventBroker:
+  type ChannelMessageReceivedEvent* = object
+    channelId*: ChannelId
+    senderId*: SdsParticipantID
+    payload*: seq[byte]
+
+EventBroker:
+  ## Emitted when every segment of a channel-level `send()` reached
+  ## `Confirmed`. Channel-level analogue of `MessageSentEvent`; the
+  ## `requestId` is the channel-layer parent returned by `send()`.
+  type ChannelMessageSentEvent* = object
+    channelId*: ChannelId
+    requestId*: RequestId
+
+EventBroker:
+  ## Emitted when a channel-level `send()` finalises with at least one
+  ## segment in `Failed`. Channel-level analogue of `MessageErrorEvent`.
+  type ChannelMessageErrorEvent* = object
+    channelId*: ChannelId
+    requestId*: RequestId
+    error*: string
+
+method createReliableChannel*(
+    self: IReliableChannelManager,
+    channelId: ChannelId,
+    contentTopic: ContentTopic,
+    senderId: SdsParticipantID,
+    sendHandler: SendHandler = nil,
+): Result[ChannelId, string] {.base.} =
+  return err("Interface IReliableChannelManager.createReliableChannel not implemented")
+
+method closeChannel*(
+    self: IReliableChannelManager, channelId: ChannelId
+): Future[Result[void, string]] {.async: (raises: []), base.} =
+  return err("Interface IReliableChannelManager.closeChannel not implemented")
+
+method send*(
+    self: IReliableChannelManager,
+    channelId: ChannelId,
+    appPayload: seq[byte],
+    ephemeral: bool = false,
+): Future[Result[RequestId, string]] {.async: (raises: []), base.} =
+  return err("Interface IReliableChannelManager.send not implemented")
diff --git a/logos_delivery/api/types.nim b/logos_delivery/api/types.nim
index 5757a8e82..415e4bf0b 100644
--- a/logos_delivery/api/types.nim
+++ b/logos_delivery/api/types.nim
@@ -1,14 +1,19 @@
-import logos_delivery/waku/compat/option_valueor
-import libp2p/crypto/crypto
 {.push raises: [].}
-
+import std/hashes
 import bearssl/rand, std/times, chronos
 import stew/byteutils
-import logos_delivery/waku/utils/requests as request_utils
+import libp2p/crypto/crypto
+
+import logos_delivery/waku/compat/option_valueor
+
 import logos_delivery/waku/waku_core/[topics/content_topic, message/message, time]
 
 export content_topic, message
 
+import types/sds_message_id
+
+export sds_message_id
+
 type
   MessageEnvelope* = object
     contentTopic*: ContentTopic
@@ -26,9 +31,16 @@ type
     PartiallyConnected
     Connected
 
+  ChannelId* = SdsChannelID
+
+proc generateRequestId*(rng: crypto.Rng): string =
+  var bytes: array[10, byte]
+  rng.generate(bytes)
+  return byteutils.toHex(bytes)
+
 proc new*(T: typedesc[RequestId], rng: crypto.Rng): T =
   ## Generate a new RequestId using the provided RNG.
-  RequestId(request_utils.generateRequestId(rng))
+  RequestId(generateRequestId(rng))
 
 proc `$`*(r: RequestId): string {.inline.} =
   string(r)
@@ -36,6 +48,10 @@ proc `$`*(r: RequestId): string {.inline.} =
 proc `==`*(a, b: RequestId): bool {.inline.} =
   string(a) == string(b)
 
+proc hash*(r: RequestId): Hash =
+  ## Allows `RequestId` to be used as a `Table` key.
+  hash(string(r))
+
 proc init*(
     T: type MessageEnvelope,
     contentTopic: ContentTopic,
diff --git a/logos_delivery/channels/events.nim b/logos_delivery/channels/events.nim
deleted file mode 100644
index 5f69095e4..000000000
--- a/logos_delivery/channels/events.nim
+++ /dev/null
@@ -1,39 +0,0 @@
-## Reliable Channel event types emitted to API consumers.
-##
-## Lifecycle events for individual segments (sent / propagated / errored)
-## are the same as the network-level ones the MessagingClient already
-## emits — `requestId` is shared across layers — so we just re-export
-## `waku/events/message_events` and avoid declaring duplicates.
-##
-## Only the channel-level `MessageReceivedEvent` carries data that has
-## no analogue in the lower layer (reassembled application payload,
-## senderId, channelId), so it lives here.
-
-import logos_delivery/waku/events/message_events as waku_message_events
-import brokers/event_broker
-
-import ./types as channel_types
-
-export waku_message_events, channel_types, event_broker
-
-EventBroker:
-  type ChannelMessageReceivedEvent* = object
-    channelId*: ChannelId
-    senderId*: SdsParticipantID
-    payload*: seq[byte]
-
-EventBroker:
-  ## Emitted when every segment of a channel-level `send()` reached
-  ## `Confirmed`. Channel-level analogue of `MessageSentEvent`; the
-  ## `requestId` is the channel-layer parent returned by `send()`.
-  type ChannelMessageSentEvent* = object
-    channelId*: ChannelId
-    requestId*: RequestId
-
-EventBroker:
-  ## Emitted when a channel-level `send()` finalises with at least one
-  ## segment in `Failed`. Channel-level analogue of `MessageErrorEvent`.
-  type ChannelMessageErrorEvent* = object
-    channelId*: ChannelId
-    requestId*: RequestId
-    error*: string
diff --git a/logos_delivery/channels/reliable_channel.nim b/logos_delivery/channels/reliable_channel.nim
index 307dc17a4..c52d25653 100644
--- a/logos_delivery/channels/reliable_channel.nim
+++ b/logos_delivery/channels/reliable_channel.nim
@@ -24,16 +24,17 @@ import libp2p/crypto/crypto as libp2p_crypto
 import logos_delivery/api/types
 import logos_delivery/messaging/delivery_service/send_service
 import logos_delivery/waku/waku_core/topics
+import logos_delivery/api/reliable_channel_manager_api
+import logos_delivery/api/messaging_client_api
 
-import ./events
 import ./segmentation/segmentation
 import ./scalable_data_sync/scalable_data_sync
 import ./rate_limit_manager/rate_limit_manager
 import ./encryption/encryption
 
 export
-  types, send_service, events, segmentation, scalable_data_sync, rate_limit_manager,
-  encryption
+  types, send_service, reliable_channel_manager_api, segmentation, scalable_data_sync,
+  rate_limit_manager, encryption
 
 const LipWireReliableChannelVersion* = "RELIABLE-CHANNEL-API/1"
   ## Wire-format spec marker for the Reliable Channel layer, as defined
@@ -44,14 +45,6 @@ const LipWireReliableChannelVersion* = "RELIABLE-CHANNEL-API/1"
   ## on breaking on-the-wire changes; implementations pin one version.
 
 type
-  SendHandler* = proc(envelope: MessageEnvelope): Future[Result[RequestId, string]] {.
-    async: (raises: [CatchableError]), gcsafe
-  .}
-    ## Egress dispatch boundary. Typically wraps `MessagingClient.send`;
-    ## tests inject a fake that records calls and returns canned
-    ## `RequestId`s so the send state machine can be exercised end-to-end
-    ## without a network.
-
   MessagePersistence {.pure.} = enum
     Persistent
     Ephemeral
diff --git a/logos_delivery/channels/reliable_channel_manager.nim b/logos_delivery/channels/reliable_channel_manager.nim
index 29feab0b9..88d1d1787 100644
--- a/logos_delivery/channels/reliable_channel_manager.nim
+++ b/logos_delivery/channels/reliable_channel_manager.nim
@@ -13,9 +13,9 @@ import stew/byteutils
 
 import brokers/broker_context
 
-import logos_delivery/waku/events/message_events as waku_message_events
-import logos_delivery/messaging/messaging_client
 import logos_delivery/api/types
+import logos_delivery/api/reliable_channel_manager_api
+import logos_delivery/messaging/messaging_client
 import logos_delivery/waku/waku_core/topics
 import logos_delivery/waku/persistency/sds_persistency
 
@@ -34,7 +34,7 @@ type
     ## channel API. Placeholder for now (segmentation / SDS / rate-limit defaults
     ## will move here in a follow-up PR); kept so each layer owns its own config.
 
-  ReliableChannelManager* = ref object
+  ReliableChannelManager* = ref object of IReliableChannelManager
     channels: Table[ChannelId, ReliableChannel]
     messagingClient: MessagingClient ## The channel layer chains onto messaging.
     sendHandler: SendHandler
@@ -94,13 +94,13 @@ proc sdsPersistence(): Option[Persistence] =
     return none(Persistence)
   return some(newSdsPersistence(job))
 
-proc createReliableChannel*(
+method createReliableChannel*(
     self: ReliableChannelManager,
     channelId: ChannelId,
     contentTopic: ContentTopic,
     senderId: SdsParticipantID,
     sendHandler: SendHandler = nil,
-): Result[ChannelId, string] =
+): Result[ChannelId, string] {.raises: [].} =
   ## Spec entry point. The `sendHandler` and `rng` the channel needs are
   ## sourced from the owning `ReliableChannelManager` rather than passed
   ## per call. Encryption is wired up through the `Encrypt`/`Decrypt`
@@ -146,7 +146,7 @@ proc createReliableChannel*(
   self.channels[channelId] = chn
   return ok(channelId)
 
-proc closeChannel*(
+method closeChannel*(
     self: ReliableChannelManager, channelId: ChannelId
 ): Future[Result[void, string]] {.async: (raises: []).} =
   ## Stops the channel's SDS loops and releases the channel. Persisted SDS
@@ -158,7 +158,7 @@ proc closeChannel*(
   await chn.stop()
   return ok()
 
-proc send*(
+method send*(
     self: ReliableChannelManager,
     channelId: ChannelId,
     appPayload: seq[byte],
diff --git a/logos_delivery/channels/types.nim b/logos_delivery/channels/types.nim
deleted file mode 100644
index 7730c5c58..000000000
--- a/logos_delivery/channels/types.nim
+++ /dev/null
@@ -1,15 +0,0 @@
-## Core identifier types for the Reliable Channel API.
-
-import std/hashes
-import logos_delivery/api/types as api_types
-
-import ./scalable_data_sync/scalable_data_sync
-
-export scalable_data_sync
-export api_types
-
-type ChannelId* = SdsChannelID
-
-proc hash*(r: RequestId): Hash =
-  ## Allows `RequestId` to be used as a `Table` key.
-  hash(string(r))
diff --git a/logos_delivery/logos_delivery.nim b/logos_delivery/logos_delivery.nim
index f61202b9a..f739851e7 100644
--- a/logos_delivery/logos_delivery.nim
+++ b/logos_delivery/logos_delivery.nim
@@ -11,6 +11,8 @@
 
 import results, chronos, chronicles
 
+import logos_delivery/api/logos_delivery_api
+export logos_delivery_api
 import logos_delivery/waku/waku
 export waku
 import logos_delivery/messaging/messaging_client
@@ -35,7 +37,8 @@ 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
@@ -79,7 +82,7 @@ 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")
@@ -99,7 +102,7 @@ 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()
@@ -109,7 +112,7 @@ 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())
diff --git a/logos_delivery/messaging/delivery_service/recv_service/recv_service.nim b/logos_delivery/messaging/delivery_service/recv_service/recv_service.nim
index 90bdb0839..9840d5a20 100644
--- a/logos_delivery/messaging/delivery_service/recv_service/recv_service.nim
+++ b/logos_delivery/messaging/delivery_service/recv_service/recv_service.nim
@@ -6,6 +6,7 @@ import logos_delivery/waku/compat/option_valueor
 import std/[tables, sequtils, options, sets]
 import chronos, chronicles, libp2p/utility
 import brokers/broker_context
+import logos_delivery/api/[types, logos_delivery_api, kernel_api, messaging_client_api]
 import
   logos_delivery/waku/[
     waku_core,
@@ -13,7 +14,6 @@ import
     waku_store/client,
     waku_store/common,
     waku_filter_v2/client,
-    events/message_events,
     events/health_events,
     waku_node,
     node/subscription_manager,
diff --git a/logos_delivery/messaging/delivery_service/send_service/send_service.nim b/logos_delivery/messaging/delivery_service/send_service/send_service.nim
index 67f8de95f..a7be11a8b 100644
--- a/logos_delivery/messaging/delivery_service/send_service/send_service.nim
+++ b/logos_delivery/messaging/delivery_service/send_service/send_service.nim
@@ -5,6 +5,7 @@ import logos_delivery/waku/compat/option_valueor
 import std/[sequtils, tables, options, typetraits]
 import chronos, chronicles, libp2p/utility
 import brokers/broker_context
+import logos_delivery/api/messaging_client_api
 import
   ./[send_processor, relay_processor, lightpush_processor, delivery_task],
   logos_delivery/waku/[
@@ -18,7 +19,6 @@ import
     rln/rln,
     waku_lightpush/client,
     waku_lightpush/callbacks,
-    events/message_events,
   ]
 
 logScope:
diff --git a/logos_delivery/messaging/messaging_client.nim b/logos_delivery/messaging/messaging_client.nim
index 96cd13eb1..6db970a72 100644
--- a/logos_delivery/messaging/messaging_client.nim
+++ b/logos_delivery/messaging/messaging_client.nim
@@ -2,6 +2,7 @@ import results, chronos
 import chronicles
 import
   logos_delivery/api/types,
+  logos_delivery/api/messaging_client_api,
   logos_delivery/waku/node/[waku_node, subscription_manager],
   logos_delivery/messaging/delivery_service/[recv_service, send_service],
   logos_delivery/messaging/delivery_service/send_service/delivery_task
@@ -13,7 +14,7 @@ type
     ## follow-up PR. Today it only carries the p2p reliability toggle.
     useP2PReliability*: bool
 
-  MessagingClient* = ref object
+  MessagingClient* = ref object of IMessagingClient
     node: WakuNode
     sendService*: SendService
     recvService*: RecvService
@@ -46,26 +47,25 @@ proc stop*(self: MessagingClient) {.async.} =
 proc checkApiAvailability(self: MessagingClient): Result[void, string] =
   if self.isNil():
     return err("MessagingClient is not initialized")
-
   return ok()
 
-proc subscribe*(
+method subscribe*(
     self: MessagingClient, contentTopic: ContentTopic
-): Future[Result[void, string]] {.async.} =
+): Future[Result[void, string]] {.async: (raises: []).} =
   ?checkApiAvailability(self)
 
   return self.node.subscriptionManager.subscribe(contentTopic)
 
-proc unsubscribe*(
+method unsubscribe*(
     self: MessagingClient, contentTopic: ContentTopic
-): Result[void, string] =
+): Result[void, string] {.raises: [].} =
   ?checkApiAvailability(self)
 
   return self.node.subscriptionManager.unsubscribe(contentTopic)
 
-proc send*(
+method send*(
     self: MessagingClient, envelope: MessageEnvelope
-): Future[Result[RequestId, string]] {.async.} =
+): Future[Result[RequestId, string]] {.async: (raises: []).} =
   ## High-level messaging API send. Auto-subscribes to the content topic
   ## (so the local node sees its own gossipsub broadcast), builds a
   ## `DeliveryTask`, and hands it to the send service. Returns the request
diff --git a/logos_delivery/waku/events/events.nim b/logos_delivery/waku/events/events.nim
index 130d7c018..56d8eee7f 100644
--- a/logos_delivery/waku/events/events.nim
+++ b/logos_delivery/waku/events/events.nim
@@ -1,9 +1,3 @@
-import
-  ./[
-    message_events, delivery_events, health_events, peer_events, lifecycle_events,
-    discovery_events,
-  ]
+import ./[delivery_events, health_events, peer_events, discovery_events]
 
-export
-  message_events, delivery_events, health_events, peer_events, lifecycle_events,
-  discovery_events
+export delivery_events, health_events, peer_events, discovery_events
diff --git a/logos_delivery/waku/events/health_events.nim b/logos_delivery/waku/events/health_events.nim
index d19de776b..9dc70ae63 100644
--- a/logos_delivery/waku/events/health_events.nim
+++ b/logos_delivery/waku/events/health_events.nim
@@ -1,15 +1,10 @@
 import brokers/event_broker
 
-import logos_delivery/api/types
-import logos_delivery/waku/node/health_monitor/[protocol_health, topic_health]
-import logos_delivery/waku/waku_core/topics
+from logos_delivery/api/logos_delivery_api import EventConnectionStatusChange
+import logos_delivery/waku/node/health_monitor/topic_health
+from logos_delivery/waku/waku_core/topics import ContentTopic, PubsubTopic
 
-export protocol_health, topic_health
-
-# Notify health changes to node connectivity
-EventBroker:
-  type EventConnectionStatusChange* = object
-    connectionStatus*: ConnectionStatus
+export topic_health, EventConnectionStatusChange
 
 # Notify health changes to a subscribed topic
 # TODO: emit content topic health change events when subscribe/unsubscribe
diff --git a/logos_delivery/waku/events/message_events.nim b/logos_delivery/waku/events/message_events.nim
deleted file mode 100644
index 2e4bece80..000000000
--- a/logos_delivery/waku/events/message_events.nim
+++ /dev/null
@@ -1,35 +0,0 @@
-import brokers/event_broker
-import logos_delivery/api/types
-import logos_delivery/waku/[waku_core/message, waku_core/topics]
-export types
-
-EventBroker:
-  # Event emitted when a message is sent to the network
-  type MessageSentEvent* = object
-    requestId*: RequestId
-    messageHash*: string
-
-EventBroker:
-  # Event emitted when a message send operation fails
-  type MessageErrorEvent* = object
-    requestId*: RequestId
-    messageHash*: string
-    error*: string
-
-EventBroker:
-  # Confirmation that a message has been correctly delivered to some neighbouring nodes.
-  type MessagePropagatedEvent* = object
-    requestId*: RequestId
-    messageHash*: string
-
-EventBroker:
-  # Event emitted when a message is received via Waku
-  type MessageReceivedEvent* = object
-    messageHash*: string
-    message*: WakuMessage
-
-EventBroker:
-  # Internal event emitted when a message arrives from the network via any protocol
-  type MessageSeenEvent* = object
-    topic*: PubsubTopic
-    message*: WakuMessage
diff --git a/logos_delivery/waku/node/health_monitor/node_health_monitor.nim b/logos_delivery/waku/node/health_monitor/node_health_monitor.nim
index d75a793ac..adfd0a477 100644
--- a/logos_delivery/waku/node/health_monitor/node_health_monitor.nim
+++ b/logos_delivery/waku/node/health_monitor/node_health_monitor.nim
@@ -9,6 +9,7 @@ import
   libp2p/protocols/pubsub,
   libp2p/protocols/pubsub/rpc/messages,
   logos_delivery/api/types,
+  logos_delivery/api/logos_delivery_api,
   logos_delivery/waku/[
     waku_relay,
     rln,
diff --git a/logos_delivery/waku/node/health_monitor/topic_health.nim b/logos_delivery/waku/node/health_monitor/topic_health.nim
index 9273f4835..a08a3c3a9 100644
--- a/logos_delivery/waku/node/health_monitor/topic_health.nim
+++ b/logos_delivery/waku/node/health_monitor/topic_health.nim
@@ -1,6 +1,6 @@
 import chronos
 
-import logos_delivery/waku/waku_core
+from logos_delivery/waku/waku_core/topics import PubsubTopic
 
 type TopicHealth* = enum
   UNHEALTHY
diff --git a/logos_delivery/waku/node/subscription_manager.nim b/logos_delivery/waku/node/subscription_manager.nim
index 15b582ea6..2eadd2009 100644
--- a/logos_delivery/waku/node/subscription_manager.nim
+++ b/logos_delivery/waku/node/subscription_manager.nim
@@ -2,6 +2,7 @@ import logos_delivery/waku/compat/option_valueor
 import std/[sequtils, sets, tables, options], chronos, chronicles, metrics, results
 import libp2p/[peerid, peerinfo]
 import brokers/broker_context
+import logos_delivery/api/kernel_api
 
 import
   logos_delivery/waku/[
@@ -16,7 +17,6 @@ import
     waku_filter_v2/client as filter_client,
     waku_filter_v2/protocol as filter_protocol,
     events/health_events,
-    events/message_events,
     events/peer_events,
     requests/health_requests,
     node/peer_manager,
diff --git a/logos_delivery/waku/node/waku_node.nim b/logos_delivery/waku/node/waku_node.nim
index 665f0ba98..613b3a9f3 100644
--- a/logos_delivery/waku/node/waku_node.nim
+++ b/logos_delivery/waku/node/waku_node.nim
@@ -60,9 +60,9 @@ import
     requests/node_requests,
     requests/health_requests,
     events/health_events,
-    events/message_events,
     events/peer_events,
   ],
+  logos_delivery/api/kernel_api,
   logos_delivery/waku/discovery/waku_kademlia,
   logos_delivery/waku/net/[bound_ports, net_config],
   ./peer_manager,
diff --git a/logos_delivery/waku/node/waku_node/relay.nim b/logos_delivery/waku/node/waku_node/relay.nim
index b1a2f9287..05e1d30db 100644
--- a/logos_delivery/waku/node/waku_node/relay.nim
+++ b/logos_delivery/waku/node/waku_node/relay.nim
@@ -33,7 +33,6 @@ import
     node/waku_node,
     node/subscription_manager,
     node/peer_manager,
-    events/message_events,
   ]
 
 export waku_relay.WakuRelayHandler
diff --git a/logos_delivery/waku/utils/requests.nim b/logos_delivery/waku/utils/requests.nim
deleted file mode 100644
index a7fd9a2a9..000000000
--- a/logos_delivery/waku/utils/requests.nim
+++ /dev/null
@@ -1,10 +0,0 @@
-# Request utils.
-
-{.push raises: [].}
-
-import libp2p/crypto/crypto, stew/byteutils
-
-proc generateRequestId*(rng: crypto.Rng): string =
-  var bytes: array[10, byte]
-  rng.generate(bytes)
-  return byteutils.toHex(bytes)
diff --git a/logos_delivery/waku/waku.nim b/logos_delivery/waku/waku.nim
index 067b5b6ec..ff9905ab5 100644
--- a/logos_delivery/waku/waku.nim
+++ b/logos_delivery/waku/waku.nim
@@ -22,6 +22,7 @@ import
   metrics/chronos_httpserver,
   brokers/broker_context,
   logos_delivery/api/types,
+  logos_delivery/api/kernel_api,
   logos_delivery/waku/[
     waku_core,
     waku_node,
@@ -65,7 +66,7 @@ const git_version* {.strdefine.} = "n/a"
 
 const FilterOpTimeout = 5.seconds
 
-type Waku* = ref object
+type Waku* = ref object of IKernel
   stateInfo*: WakuStateInfo
   conf*: WakuConf
   rng*: crypto.Rng
@@ -577,29 +578,31 @@ proc stop*(waku: Waku): Future[Result[void, string]] {.async: (raises: []).} =
 ## Kernel API realization
 ##
 # --- topic construction ---
-proc buildContentTopic*(
+method buildContentTopic*(
     self: Waku, appName: string, appVersion: uint32, name: string, encoding: string
-): Future[Result[ContentTopic, string]] {.async.} =
+): Future[Result[ContentTopic, string]] {.async: (raises: []).} =
   try:
     return ok(ContentTopic(fmt"/{appName}/{appVersion}/{name}/{encoding}"))
   except CatchableError as e:
     return err(e.msg)
 
-proc buildPubsubTopic*(
+method buildPubsubTopic*(
     self: Waku, topicName: string
-): Future[Result[PubsubTopic, string]] {.async.} =
+): Future[Result[PubsubTopic, string]] {.async: (raises: []).} =
   try:
     return ok(PubsubTopic(fmt"/waku/2/{topicName}"))
   except CatchableError as e:
     return err(e.msg)
 
-proc defaultPubsubTopic*(self: Waku): Future[Result[PubsubTopic, string]] {.async.} =
+method defaultPubsubTopic*(
+    self: Waku
+): Future[Result[PubsubTopic, string]] {.async: (raises: []).} =
   return ok(DefaultPubsubTopic)
 
 # --- relay ---
-proc relayPublish*(
+method relayPublish*(
     self: Waku, pubsubTopic: PubsubTopic, message: WakuMessage, timeoutMs: uint32
-): Future[Result[int, string]] {.async.} =
+): Future[Result[int, string]] {.async: (raises: []).} =
   try:
     if self.node.wakuRelay.isNil():
       return err("relayPublish: WakuRelay not mounted")
@@ -611,9 +614,9 @@ proc relayPublish*(
   except CatchableError as e:
     return err(e.msg)
 
-proc relaySubscribe*(
+method relaySubscribe*(
     self: Waku, pubsubTopic: PubsubTopic
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     if self.node.wakuRelay.isNil():
       return err("relaySubscribe: WakuRelay not mounted")
@@ -627,9 +630,9 @@ proc relaySubscribe*(
   except CatchableError as e:
     return err(e.msg)
 
-proc relayUnsubscribe*(
+method relayUnsubscribe*(
     self: Waku, pubsubTopic: PubsubTopic
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     if self.node.wakuRelay.isNil():
       return err("relayUnsubscribe: WakuRelay not mounted")
@@ -641,9 +644,9 @@ proc relayUnsubscribe*(
   except CatchableError as e:
     return err(e.msg)
 
-proc relayAddProtectedShard*(
+method relayAddProtectedShard*(
     self: Waku, clusterId: uint16, shardId: uint16, publicKey: string
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     if self.node.wakuRelay.isNil():
       return err("relayAddProtectedShard: WakuRelay not mounted")
@@ -657,9 +660,9 @@ proc relayAddProtectedShard*(
   except CatchableError as e:
     return err(e.msg)
 
-proc relayConnectedPeers*(
+method relayConnectedPeers*(
     self: Waku, pubsubTopic: PubsubTopic
-): Future[Result[seq[string], string]] {.async.} =
+): Future[Result[seq[string], string]] {.async: (raises: []).} =
   try:
     if self.node.wakuRelay.isNil():
       return err("relayConnectedPeers: WakuRelay not mounted")
@@ -671,9 +674,9 @@ proc relayConnectedPeers*(
   except CatchableError as e:
     return err(e.msg)
 
-proc relayPeersInMesh*(
+method relayPeersInMesh*(
     self: Waku, pubsubTopic: PubsubTopic
-): Future[Result[seq[string], string]] {.async.} =
+): Future[Result[seq[string], string]] {.async: (raises: []).} =
   try:
     if self.node.wakuRelay.isNil():
       return err("relayPeersInMesh: WakuRelay not mounted")
@@ -686,12 +689,12 @@ proc relayPeersInMesh*(
     return err(e.msg)
 
 # --- filter ---
-proc filterSubscribe*(
+method filterSubscribe*(
     self: Waku,
     pubsubTopic: Option[PubsubTopic],
     contentTopics: seq[ContentTopic],
     peer: string,
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     if self.node.wakuFilterClient.isNil():
       return err("wakuFilterClient is not mounted")
@@ -706,12 +709,12 @@ proc filterSubscribe*(
   except CatchableError as e:
     return err(e.msg)
 
-proc filterUnsubscribe*(
+method filterUnsubscribe*(
     self: Waku,
     pubsubTopic: Option[PubsubTopic],
     contentTopics: seq[ContentTopic],
     peer: string,
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     if self.node.wakuFilterClient.isNil():
       return err("wakuFilterClient is not mounted")
@@ -726,9 +729,9 @@ proc filterUnsubscribe*(
   except CatchableError as e:
     return err(e.msg)
 
-proc filterUnsubscribeAll*(
+method filterUnsubscribeAll*(
     self: Waku, peer: string
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     if self.node.wakuFilterClient.isNil():
       return err("wakuFilterClient is not mounted")
@@ -744,9 +747,9 @@ proc filterUnsubscribeAll*(
     return err(e.msg)
 
 # --- lightpush ---
-proc lightpushPublish*(
+method lightpushPublish*(
     self: Waku, pubsubTopic: PubsubTopic, message: WakuMessage, peer: string
-): Future[Result[string, string]] {.async.} =
+): Future[Result[string, string]] {.async: (raises: []).} =
   try:
     if self.node.wakuLegacyLightpushClient.isNil():
       return err("wakuLegacyLightpushClient is not mounted")
@@ -766,9 +769,9 @@ proc lightpushPublish*(
     return err(e.msg)
 
 # --- store ---
-proc storeQuery*(
+method storeQuery*(
     self: Waku, request: StoreQueryRequest, peer: string, timeoutMs: int
-): Future[Result[StoreQueryResponse, string]] {.async.} =
+): Future[Result[StoreQueryResponse, string]] {.async: (raises: []).} =
   try:
     if self.node.wakuStoreClient.isNil():
       return err("wakuStoreClient is not mounted")
@@ -788,18 +791,18 @@ proc storeQuery*(
     return err(e.msg)
 
 # --- peer management ---
-proc connect*(
+method connect*(
     self: Waku, peers: seq[string], timeoutMs: uint32
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     await self.node.connectToNodes(peers.mapIt(strip(it)), source = "static")
     return ok(true)
   except CatchableError as e:
     return err(e.msg)
 
-proc disconnectPeerById*(
+method disconnectPeerById*(
     self: Waku, peerId: string
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     let pId = PeerId.init(peerId).valueOr:
       return err($error)
@@ -808,16 +811,18 @@ proc disconnectPeerById*(
   except CatchableError as e:
     return err(e.msg)
 
-proc disconnectAllPeers*(self: Waku): Future[Result[bool, string]] {.async.} =
+method disconnectAllPeers*(
+    self: Waku
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     await self.node.peerManager.disconnectAllPeers()
     return ok(true)
   except CatchableError as e:
     return err(e.msg)
 
-proc dialPeer*(
+method dialPeer*(
     self: Waku, peerAddr: string, protocol: string, timeoutMs: int
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     let remotePeerInfo = parsePeerInfo(peerAddr).valueOr:
       return err($error)
@@ -828,9 +833,9 @@ proc dialPeer*(
   except CatchableError as e:
     return err(e.msg)
 
-proc dialPeerById*(
+method dialPeerById*(
     self: Waku, peerId: string, protocol: string, timeoutMs: int
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     let pId = PeerId.init(peerId).valueOr:
       return err($error)
@@ -841,13 +846,17 @@ proc dialPeerById*(
   except CatchableError as e:
     return err(e.msg)
 
-proc peerIdsFromPeerstore*(self: Waku): Future[Result[seq[string], string]] {.async.} =
+method peerIdsFromPeerstore*(
+    self: Waku
+): Future[Result[seq[string], string]] {.async: (raises: []).} =
   try:
     return ok(self.node.peerManager.switch.peerStore.peers().mapIt($it.peerId))
   except CatchableError as e:
     return err(e.msg)
 
-proc connectedPeersInfo*(self: Waku): Future[Result[seq[string], string]] {.async.} =
+method connectedPeersInfo*(
+    self: Waku
+): Future[Result[seq[string], string]] {.async: (raises: []).} =
   try:
     return ok(
       self.node.peerManager.switch.peerStore
@@ -858,16 +867,18 @@ proc connectedPeersInfo*(self: Waku): Future[Result[seq[string], string]] {.asyn
   except CatchableError as e:
     return err(e.msg)
 
-proc connectedPeers*(self: Waku): Future[Result[seq[string], string]] {.async.} =
+method connectedPeers*(
+    self: Waku
+): Future[Result[seq[string], string]] {.async: (raises: []).} =
   try:
     let (inPeerIds, outPeerIds) = self.node.peerManager.connectedPeers()
     return ok(concat(inPeerIds, outPeerIds).mapIt($it))
   except CatchableError as e:
     return err(e.msg)
 
-proc peerIdsByProtocol*(
+method peerIdsByProtocol*(
     self: Waku, protocol: string
-): Future[Result[seq[string], string]] {.async.} =
+): Future[Result[seq[string], string]] {.async: (raises: []).} =
   try:
     return ok(
       self.node.peerManager.switch.peerStore
@@ -879,9 +890,9 @@ proc peerIdsByProtocol*(
     return err(e.msg)
 
 # --- discovery ---
-proc dnsDiscovery*(
+method dnsDiscovery*(
     self: Waku, enrTreeUrl: string, nameServer: string, timeoutMs: int
-): Future[Result[seq[string], string]] {.async.} =
+): Future[Result[seq[string], string]] {.async: (raises: []).} =
   try:
     let dnsNameServers = @[parseIpAddress(nameServer)]
     let discoveredPeers = (
@@ -898,9 +909,9 @@ proc dnsDiscovery*(
   except CatchableError as e:
     return err(e.msg)
 
-proc discv5UpdateBootnodes*(
+method discv5UpdateBootnodes*(
     self: Waku, bootnodes: seq[string]
-): Future[Result[bool, string]] {.async.} =
+): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     if self.wakuDiscv5.isNil():
       return err("discv5 not started")
@@ -911,7 +922,7 @@ proc discv5UpdateBootnodes*(
   except CatchableError as e:
     return err(e.msg)
 
-proc startDiscv5*(self: Waku): Future[Result[bool, string]] {.async.} =
+method startDiscv5*(self: Waku): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     if self.wakuDiscv5.isNil():
       return err("discv5 not started")
@@ -921,7 +932,7 @@ proc startDiscv5*(self: Waku): Future[Result[bool, string]] {.async.} =
   except CatchableError as e:
     return err(e.msg)
 
-proc stopDiscv5*(self: Waku): Future[Result[bool, string]] {.async.} =
+method stopDiscv5*(self: Waku): Future[Result[bool, string]] {.async: (raises: []).} =
   try:
     if self.wakuDiscv5.isNil():
       return err("discv5 not started")
@@ -930,9 +941,9 @@ proc stopDiscv5*(self: Waku): Future[Result[bool, string]] {.async.} =
   except CatchableError as e:
     return err(e.msg)
 
-proc peerExchangeRequest*(
+method peerExchangeRequest*(
     self: Waku, numPeers: uint64
-): Future[Result[int, string]] {.async.} =
+): Future[Result[int, string]] {.async: (raises: []).} =
   try:
     let numPeersRecv = (await self.node.fetchPeerExchangePeers(numPeers)).valueOr:
       return err("failed peer exchange: " & $error)
@@ -941,37 +952,39 @@ proc peerExchangeRequest*(
     return err(e.msg)
 
 # --- debug / info ---
-proc version*(self: Waku): Future[Result[string, string]] {.async.} =
+method version*(self: Waku): Future[Result[string, string]] {.async: (raises: []).} =
   return ok(WakuNodeVersionString)
 
-proc listenAddresses*(self: Waku): Future[Result[seq[string], string]] {.async.} =
+method listenAddresses*(
+    self: Waku
+): Future[Result[seq[string], string]] {.async: (raises: []).} =
   try:
     return ok(self.node.info().listenAddresses)
   except CatchableError as e:
     return err(e.msg)
 
-proc myEnr*(self: Waku): Future[Result[string, string]] {.async.} =
+method myEnr*(self: Waku): Future[Result[string, string]] {.async: (raises: []).} =
   try:
     return ok(self.node.enr.toURI())
   except CatchableError as e:
     return err(e.msg)
 
-proc myPeerId*(self: Waku): Future[Result[string, string]] {.async.} =
+method myPeerId*(self: Waku): Future[Result[string, string]] {.async: (raises: []).} =
   try:
     return ok($self.node.peerId())
   except CatchableError as e:
     return err(e.msg)
 
-proc metrics*(self: Waku): Future[Result[string, string]] {.async.} =
+method metrics*(self: Waku): Future[Result[string, string]] {.async: (raises: []).} =
   {.gcsafe.}:
     try:
       return ok(defaultRegistry.toText())
     except CatchableError as e:
       return err(e.msg)
 
-proc pingPeer*(
+method pingPeer*(
     self: Waku, peerAddr: string, timeoutMs: int
-): Future[Result[int64, string]] {.async.} =
+): Future[Result[int64, string]] {.async: (raises: []).} =
   try:
     let peerInfo = parsePeerInfo(peerAddr).valueOr:
       return err("pingPeer failed to parse peer addr: " & $error)
diff --git a/logos_delivery/waku/waku_lightpush/client.nim b/logos_delivery/waku/waku_lightpush/client.nim
index 680970a51..e33b2875c 100644
--- a/logos_delivery/waku/waku_lightpush/client.nim
+++ b/logos_delivery/waku/waku_lightpush/client.nim
@@ -4,10 +4,10 @@ import logos_delivery/waku/compat/option_valueor
 
 import std/options, results, chronicles, chronos, metrics, bearssl/rand, stew/byteutils
 import libp2p/peerid, libp2p/stream/connection
+import logos_delivery/api/types
 import
   ../waku_core/peers,
   ../node/peer_manager,
-  ../utils/requests,
   ../waku_core,
   ./common,
   ./protocol_metrics,
diff --git a/logos_delivery/waku/waku_lightpush/self_req_handler.nim b/logos_delivery/waku/waku_lightpush/self_req_handler.nim
index 06a0d3715..dcf8ba895 100644
--- a/logos_delivery/waku/waku_lightpush/self_req_handler.nim
+++ b/logos_delivery/waku/waku_lightpush/self_req_handler.nim
@@ -10,8 +10,8 @@
 ## that could be used also as a lightpush client, helping testing and development.
 
 import results, chronos, std/options, metrics
-import ../waku_core, ./protocol, ./common, ./rpc, ./rpc_codec, ../utils/requests
-
+import logos_delivery/api/types
+import ../waku_core, ./protocol, ./common, ./rpc, ./rpc_codec
 proc handleSelfLightPushRequest*(
     self: WakuLightPush, pubSubTopic: Option[PubsubTopic], message: WakuMessage
 ): Future[WakuLightPushResult] {.async.} =
diff --git a/logos_delivery/waku/waku_lightpush_legacy/client.nim b/logos_delivery/waku/waku_lightpush_legacy/client.nim
index 511c3f543..ff7e694d3 100644
--- a/logos_delivery/waku/waku_lightpush_legacy/client.nim
+++ b/logos_delivery/waku/waku_lightpush_legacy/client.nim
@@ -4,10 +4,10 @@ import logos_delivery/waku/compat/option_valueor
 
 import std/options, results, chronicles, chronos, metrics, bearssl/rand, stew/byteutils
 import libp2p/peerid
+import logos_delivery/api/types
 import
   ../waku_core/peers,
   ../node/peer_manager,
-  ../utils/requests,
   ../waku_core,
   ./common,
   ./protocol_metrics,
diff --git a/logos_delivery/waku/waku_lightpush_legacy/self_req_handler.nim b/logos_delivery/waku/waku_lightpush_legacy/self_req_handler.nim
index 3c5d09a9c..466d14f7c 100644
--- a/logos_delivery/waku/waku_lightpush_legacy/self_req_handler.nim
+++ b/logos_delivery/waku/waku_lightpush_legacy/self_req_handler.nim
@@ -10,14 +10,8 @@
 ## that could be used also as a lightpush client, helping testing and development.
 
 import results, chronos, chronicles, std/options, metrics, stew/byteutils
-import
-  ../waku_core,
-  ./protocol,
-  ./common,
-  ./rpc,
-  ./rpc_codec,
-  ./protocol_metrics,
-  ../utils/requests
+import logos_delivery/api/types
+import ../waku_core, ./protocol, ./common, ./rpc, ./rpc_codec, ./protocol_metrics
 
 proc handleSelfLightPushRequest*(
     self: WakuLegacyLightPush, pubSubTopic: PubsubTopic, message: WakuMessage
diff --git a/logos_delivery/waku/waku_store/client.nim b/logos_delivery/waku/waku_store/client.nim
index 21e2699e3..c93fad6a4 100644
--- a/logos_delivery/waku/waku_store/client.nim
+++ b/logos_delivery/waku/waku_store/client.nim
@@ -9,8 +9,8 @@ import
   chronos,
   metrics,
   bearssl/rand
-import
-  ../node/peer_manager, ../utils/requests, ./protocol_metrics, ./common, ./rpc_codec
+import logos_delivery/api/types
+import ../node/peer_manager, ./protocol_metrics, ./common, ./rpc_codec
 
 logScope:
   topics = "waku store client"
diff --git a/tests/api/test_api_receive.nim b/tests/api/test_api_receive.nim
index 41c0f0477..ae8d6fcc2 100644
--- a/tests/api/test_api_receive.nim
+++ b/tests/api/test_api_receive.nim
@@ -5,6 +5,7 @@ import chronos, testutils/unittests, stew/byteutils
 import libp2p/[peerid, peerinfo, crypto/crypto]
 import brokers/broker_context
 import ../testlib/[common, wakucore, wakunode, testasync]
+import logos_delivery/api/[types, logos_delivery_api, kernel_api, messaging_client_api]
 import ../waku_archive/archive_utils
 import logos_delivery/messaging/messaging_client
 import logos_delivery/messaging/delivery_service/recv_service
@@ -14,7 +15,6 @@ import
   logos_delivery/waku/[
     waku_node,
     waku_core,
-    events/message_events,
     events/health_events,
     waku_relay/protocol,
     waku_archive,
diff --git a/tests/api/test_api_send.nim b/tests/api/test_api_send.nim
index 0ad1cea4a..ffb8d3e46 100644
--- a/tests/api/test_api_send.nim
+++ b/tests/api/test_api_send.nim
@@ -4,6 +4,7 @@ import std/strutils
 import chronos, testutils/unittests, stew/byteutils, libp2p/[switch, peerinfo]
 import brokers/broker_context
 import ../testlib/[common, wakucore, wakunode, testasync]
+import logos_delivery/api/[types, logos_delivery_api, kernel_api, messaging_client_api]
 import ../waku_archive/archive_utils
 import logos_delivery, logos_delivery/waku/[waku_node, waku_core, waku_relay/protocol]
 import logos_delivery/waku/factory/waku_conf
diff --git a/tests/api/test_api_subscription.nim b/tests/api/test_api_subscription.nim
index bf2851b02..50653108e 100644
--- a/tests/api/test_api_subscription.nim
+++ b/tests/api/test_api_subscription.nim
@@ -5,6 +5,7 @@ import chronos, testutils/unittests, stew/byteutils
 import libp2p/[peerid, peerinfo, multiaddress, crypto/crypto]
 import brokers/broker_context
 import ../testlib/[common, wakucore, wakunode, testasync]
+import logos_delivery/api/[types, logos_delivery_api, kernel_api, messaging_client_api]
 import logos_delivery/messaging/messaging_client
 
 import
@@ -12,7 +13,6 @@ import
   logos_delivery/waku/[
     waku_node,
     waku_core,
-    events/message_events,
     waku_relay/protocol,
     node/waku_node/filter,
     node/subscription_manager,
diff --git a/tests/channels/test_reliable_channel_send_receive.nim b/tests/channels/test_reliable_channel_send_receive.nim
index b3d9a8f00..719ed857c 100644
--- a/tests/channels/test_reliable_channel_send_receive.nim
+++ b/tests/channels/test_reliable_channel_send_receive.nim
@@ -7,10 +7,11 @@ import brokers/broker_context
 
 import ../testlib/[common, wakucore, wakunode, testasync]
 
+import logos_delivery/api/[types, logos_delivery_api, kernel_api, messaging_client_api]
+
 import logos_delivery
 import logos_delivery/waku/[waku_node, waku_core]
 import logos_delivery/waku/factory/waku_conf
-import logos_delivery/waku/events/message_events as waku_message_events
 import tools/confutils/cli_args
 
 import logos_delivery/channels/reliable_channel_manager
@@ -99,9 +100,8 @@ suite "Reliable Channel - ingress":
       meta: LipWireReliableChannelVersion.toBytes(),
     )
 
-    waku_message_events.MessageReceivedEvent.emit(
-      brokerCtx,
-      waku_message_events.MessageReceivedEvent(messageHash: "", message: inboundMsg),
+    MessageReceivedEvent.emit(
+      brokerCtx, MessageReceivedEvent(messageHash: "", message: inboundMsg)
     )
 
     let arrived = await received.withTimeout(TestTimeout)
@@ -151,9 +151,8 @@ suite "Reliable Channel - ingress":
       meta: @[], ## no Reliable Channel spec marker
     )
 
-    waku_message_events.MessageReceivedEvent.emit(
-      brokerCtx,
-      waku_message_events.MessageReceivedEvent(messageHash: "", message: inboundMsg),
+    MessageReceivedEvent.emit(
+      brokerCtx, MessageReceivedEvent(messageHash: "", message: inboundMsg)
     )
 
     ## Give the event broker a chance to fan out.
@@ -217,9 +216,8 @@ suite "Reliable Channel - send state machine":
       await sleepAsync(5.milliseconds)
     check sendCalls == 1
 
-    waku_message_events.MessageSentEvent.emit(
-      brokerCtx,
-      waku_message_events.MessageSentEvent(requestId: fakeMsgReqId, messageHash: ""),
+    MessageSentEvent.emit(
+      brokerCtx, MessageSentEvent(requestId: fakeMsgReqId, messageHash: "")
     )
 
     let finalised = await sentFut.withTimeout(1.seconds)
@@ -296,9 +294,8 @@ suite "Reliable Channel - send state machine":
       await sleepAsync(5.milliseconds)
     check msgReqIds.len == 2
 
-    waku_message_events.MessageSentEvent.emit(
-      brokerCtx,
-      waku_message_events.MessageSentEvent(requestId: msgReqIds[0], messageHash: ""),
+    MessageSentEvent.emit(
+      brokerCtx, MessageSentEvent(requestId: msgReqIds[0], messageHash: "")
     )
     let sentArrived = await sentFut.withTimeout(1.seconds)
     check sentArrived
@@ -308,11 +305,9 @@ suite "Reliable Channel - send state machine":
     ## segment is still `InFlight`.
     check not erroredFut.finished()
 
-    waku_message_events.MessageErrorEvent.emit(
+    MessageErrorEvent.emit(
       brokerCtx,
-      waku_message_events.MessageErrorEvent(
-        requestId: msgReqIds[1], messageHash: "", error: "synthetic"
-      ),
+      MessageErrorEvent(requestId: msgReqIds[1], messageHash: "", error: "synthetic"),
     )
     let erroredArrived = await erroredFut.withTimeout(1.seconds)
     check erroredArrived
@@ -364,9 +359,8 @@ suite "Reliable Channel - send state machine":
       let id = RequestId("race-msg-req-" & $(msgReqIds.len + 1))
       msgReqIds.add(id)
       if msgReqIds.len == 2:
-        waku_message_events.MessageSentEvent.emit(
-          brokerCtx,
-          waku_message_events.MessageSentEvent(requestId: msgReqIds[0], messageHash: ""),
+        MessageSentEvent.emit(
+          brokerCtx, MessageSentEvent(requestId: msgReqIds[0], messageHash: "")
         )
         await sleepAsync(50.milliseconds)
       sendsReturned.inc()
@@ -419,9 +413,8 @@ suite "Reliable Channel - send state machine":
     ## Finalise the second segment from the outside. If the race
     ## corrupted state, `channelReqId2`'s entry would never reach
     ## `inflightMessagingIds` and this event would silently miss.
-    waku_message_events.MessageSentEvent.emit(
-      brokerCtx,
-      waku_message_events.MessageSentEvent(requestId: msgReqIds[1], messageHash: ""),
+    MessageSentEvent.emit(
+      brokerCtx, MessageSentEvent(requestId: msgReqIds[1], messageHash: "")
     )
 
     let arrived = await bothFinalised.withTimeout(2.seconds)
@@ -556,9 +549,9 @@ suite "Reliable Channel - SDS lifecycle":
     ).expect("wrap m2")
 
     ## m2 first: missing dependency m1 -> parked, nothing delivered.
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "hash-m2", message: sdsWakuMessage(contentTopic, wire2)
       ),
     )
@@ -566,9 +559,9 @@ suite "Reliable Channel - SDS lifecycle":
     check deliveries.len == 0
 
     ## m1 arrives: m1 delivered, then the parked m2 released after it.
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "hash-m1", message: sdsWakuMessage(contentTopic, wire1)
       ),
     )
@@ -622,15 +615,15 @@ suite "Reliable Channel - SDS lifecycle":
     ).expect("wrap")
 
     ## Same envelope twice (different hashes) — the second must be suppressed.
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "dup-hash-1", message: sdsWakuMessage(contentTopic, wire)
       ),
     )
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "dup-hash-2", message: sdsWakuMessage(contentTopic, wire)
       ),
     )
@@ -678,9 +671,9 @@ suite "Reliable Channel - SDS lifecycle":
       )
     ).expect("wrap")
 
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "foreign-hash", message: sdsWakuMessage(contentTopic, wire)
       ),
     )
@@ -738,9 +731,9 @@ suite "Reliable Channel - SDS lifecycle":
       )
     ).expect("wrap")
 
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "restore-hash-1", message: sdsWakuMessage(contentTopic, wire)
       ),
     )
@@ -768,9 +761,9 @@ suite "Reliable Channel - SDS lifecycle":
       .expect("re-createReliableChannel")
 
     ## Replay the same envelope. Only a restored history suppresses it.
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "restore-hash-2", message: sdsWakuMessage(contentTopic, wire)
       ),
     )
@@ -820,9 +813,9 @@ suite "Reliable Channel - SDS protocol semantics":
     ).expect("wrap m1")
     let m1 = deserializeMessage(wire1).expect("deserialize m1")
 
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "semantics-hash-1", message: sdsWakuMessage(contentTopic, wire1)
       ),
     )
@@ -916,9 +909,9 @@ suite "Reliable Channel - SDS protocol semantics":
       )
     ).expect("wrap ack carrier")
 
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "ack-hash-1", message: sdsWakuMessage(contentTopic, ackCarrier)
       ),
     )
@@ -982,9 +975,9 @@ suite "Reliable Channel - SDS protocol semantics":
 
     ## Deepest first: m3, then m2 — both must be parked.
     for i in [2, 1]:
-      waku_message_events.MessageReceivedEvent.emit(
+      MessageReceivedEvent.emit(
         brokerCtx,
-        waku_message_events.MessageReceivedEvent(
+        MessageReceivedEvent(
           messageHash: "chain-hash-" & $(i + 1),
           message: sdsWakuMessage(contentTopic, wires[i]),
         ),
@@ -993,9 +986,9 @@ suite "Reliable Channel - SDS protocol semantics":
     check deliveries.len == 0
 
     ## The root arrives: everything drains in causal order.
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "chain-hash-1", message: sdsWakuMessage(contentTopic, wires[0])
       ),
     )
@@ -1054,9 +1047,9 @@ suite "Reliable Channel - SDS protocol semantics":
     )
     let syncWire = serializeMessage(syncMsg).expect("serialize sync")
 
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "sync-hash-1", message: sdsWakuMessage(contentTopic, syncWire)
       ),
     )
@@ -1070,9 +1063,9 @@ suite "Reliable Channel - SDS protocol semantics":
         appPayload, "sync-m1", SdsChannelID(channelId)
       )
     ).expect("wrap")
-    waku_message_events.MessageReceivedEvent.emit(
+    MessageReceivedEvent.emit(
       brokerCtx,
-      waku_message_events.MessageReceivedEvent(
+      MessageReceivedEvent(
         messageHash: "sync-hash-2", message: sdsWakuMessage(contentTopic, wire)
       ),
     )
@@ -1145,9 +1138,9 @@ suite "Reliable Channel - SDS protocol semantics":
           appPayload, "unique-m" & $i, SdsChannelID(channelId)
         )
       ).expect("wrap " & $i)
-      waku_message_events.MessageReceivedEvent.emit(
+      MessageReceivedEvent.emit(
         brokerCtx,
-        waku_message_events.MessageReceivedEvent(
+        MessageReceivedEvent(
           messageHash: "unique-hash-" & $i, message: sdsWakuMessage(contentTopic, wire)
         ),
       )