diff --git a/examples/cbindings/Makefile b/examples/cbindings/Makefile
index aa26a01..ed2d923 100644
--- a/examples/cbindings/Makefile
+++ b/examples/cbindings/Makefile
@@ -2,7 +2,7 @@
 
 CC = gcc
 CFLAGS = -Wall -Wextra -I../../library -pthread
-LDFLAGS = -L../../build -lchat -lncurses -Wl,-rpath,../../build
+LDFLAGS = -L../../build -llogoschat -lncurses -Wl,-rpath,../../build
 
 BUILD_DIR = ../../build
 TARGET = $(BUILD_DIR)/cbindings_chat_tui
diff --git a/examples/cbindings/cbindings_chat_tui.c b/examples/cbindings/cbindings_chat_tui.c
index 16c4a9e..5bc3faf 100644
--- a/examples/cbindings/cbindings_chat_tui.c
+++ b/examples/cbindings/cbindings_chat_tui.c
@@ -30,9 +30,7 @@ static const size_t MAX_INPUT_LEN = 2048;
 // Application state structures
 typedef struct {
     char current_convo[128];
-    char inbox_id[128];
     char my_name[64];
-    char my_address[128];
     void *ctx;
 } ChatState;
 
@@ -442,23 +440,13 @@ static void bundle_callback(int ret, const char *msg, size_t len, void *userData
 static void identity_callback(int ret, const char *msg, size_t len, void *userData) {
     (void)userData; (void)len;
     if (ret == RET_OK) {
-        const char *keys[] = {"name", "address"};
-        char *values[] = {g_app.chat.my_name, g_app.chat.my_address};
-        size_t sizes[] = {sizeof(g_app.chat.my_name), sizeof(g_app.chat.my_address)};
-        json_extract(msg, keys, values, sizes, 2);
-        
-        char buf[256];
-        snprintf(buf, sizeof(buf), "Identity: %s (%.24s...)", g_app.chat.my_name, g_app.chat.my_address);
-        add_log(buf);
-    }
-}
+        const char *keys[] = {"name"};
+        char *values[] = {g_app.chat.my_name};
+        size_t sizes[] = {sizeof(g_app.chat.my_name)};
+        json_extract(msg, keys, values, sizes, 1);
 
-static void inbox_callback(int ret, const char *msg, size_t len, void *userData) {
-    (void)userData;
-    if (ret == RET_OK && len > 0) {
-        snprintf(g_app.chat.inbox_id, sizeof(g_app.chat.inbox_id), "%.*s", (int)len, msg);
         char buf[256];
-        snprintf(buf, sizeof(buf), "Inbox: %.24s...", g_app.chat.inbox_id);
+        snprintf(buf, sizeof(buf), "Identity: %s", g_app.chat.my_name);
         add_log(buf);
     }
 }
@@ -713,7 +701,6 @@ int main(int argc, char *argv[]) {
     add_log("Starting client...");
     chat_start(g_app.chat.ctx, general_callback, NULL);
     chat_get_identity(g_app.chat.ctx, identity_callback, NULL);
-    chat_get_default_inbox_id(g_app.chat.ctx, inbox_callback, NULL);
 
     add_message("Welcome to Chat TUI!");
     add_message("Type /help for commands, /quit to exit");
diff --git a/library/api/client_api.nim b/library/api/client_api.nim
index 0edb798..10c8d76 100644
--- a/library/api/client_api.nim
+++ b/library/api/client_api.nim
@@ -7,7 +7,6 @@ import chronos
 import ffi
 
 import src/chat
-import src/chat/proto_types
 import src/chat/delivery/waku_client
 import src/chat/identity
 import library/utils
@@ -119,15 +118,6 @@ proc chat_get_id(
   let clientId = ctx.myLib[].getId()
   return ok(clientId)
 
-proc chat_get_default_inbox_id(
-    ctx: ptr FFIContext[ChatClient],
-    callback: FFICallBack,
-    userData: pointer
-) {.ffi.} =
-  ## Get the default inbox conversation ID
-  let inboxId = ctx.myLib[].defaultInboxConversationId()
-  return ok(inboxId)
-
 #################################################
 # Conversation List Operations
 #################################################
diff --git a/library/api/conversation_api.nim b/library/api/conversation_api.nim
index 97d7919..faab6fd 100644
--- a/library/api/conversation_api.nim
+++ b/library/api/conversation_api.nim
@@ -1,14 +1,13 @@
 ## Conversation API - FFI bindings for conversation operations
 ## Uses the {.ffi.} pragma for async request handling
 
-import std/[json, options]
+import std/options
 import chronicles
 import chronos
 import ffi
 import stew/byteutils
 
 import src/chat
-import src/chat/proto_types
 import library/utils
 
 logScope:
@@ -22,32 +21,24 @@ proc chat_new_private_conversation(
     ctx: ptr FFIContext[ChatClient],
     callback: FFICallBack,
     userData: pointer,
-    introBundleJson: cstring,
+    introBundleStr: cstring,
     contentHex: cstring
 ) {.ffi.} =
   ## Create a new private conversation with the given IntroBundle
-  ## introBundleJson: JSON string with {"ident": "hex...", "ephemeral": "hex..."}
+  ## introBundleStr: Intro bundle ASCII string as returned by chat_create_intro_bundle
   ## contentHex: Initial message content as hex-encoded string
   try:
-    let bundleJson = parseJson($introBundleJson)
-    
-    # Parse IntroBundle from JSON
-    let identBytes = hexToSeqByte(bundleJson["ident"].getStr())
-    let ephemeralBytes = hexToSeqByte(bundleJson["ephemeral"].getStr())
-    
-    let introBundle = IntroBundle(
-      ident: identBytes,
-      ephemeral: ephemeralBytes
-    )
-    
+    # Convert bundle string to seq[byte]
+    let bundle = toBytes($introBundleStr)
+
     # Convert hex content to bytes
     let content = hexToSeqByte($contentHex)
-    
+
     # Create the conversation
-    let errOpt = await ctx.myLib[].newPrivateConversation(introBundle, content)
+    let errOpt = await ctx.myLib[].newPrivateConversation(bundle, content)
     if errOpt.isSome():
       return err("failed to create conversation: " & $errOpt.get())
-    
+
     return ok("")
   except CatchableError as e:
     error "chat_new_private_conversation failed", error = e.msg
diff --git a/library/api/identity_api.nim b/library/api/identity_api.nim
index 2503242..439a72a 100644
--- a/library/api/identity_api.nim
+++ b/library/api/identity_api.nim
@@ -8,8 +8,6 @@ import ffi
 import stew/byteutils
 
 import src/chat
-import src/chat/crypto
-import src/chat/proto_types
 import library/utils
 
 logScope:
@@ -25,12 +23,9 @@ proc chat_get_identity(
     userData: pointer
 ) {.ffi.} =
   ## Get the client identity
-  ## Returns JSON string: {"name": "...", "address": "...", "pubkey": "hex..."}
-  let ident = ctx.myLib[].identity()
+  ## Returns JSON string: {"name": "..."}
   let identJson = %*{
-    "name": ident.getName(),
-    "address": ident.getAddr(),
-    "pubkey": ident.getPubkey().toHex()
+    "name": ctx.myLib[].getId()
   }
   return ok($identJson)
 
@@ -44,11 +39,7 @@ proc chat_create_intro_bundle(
     userData: pointer
 ) {.ffi.} =
   ## Create an IntroBundle for initiating private conversations
-  ## Returns JSON string: {"ident": "hex...", "ephemeral": "hex..."}
+  ## Returns the intro bundle as an ASCII string (format: logos_chatintro_<version>_<base64url payload>)
   let bundle = ctx.myLib[].createIntroBundle()
-  let bundleJson = %*{
-    "ident": bundle.ident.toHex(),
-    "ephemeral": bundle.ephemeral.toHex()
-  }
-  return ok($bundleJson)
+  return ok(string.fromBytes(bundle))
 
diff --git a/library/liblogoschat.h b/library/liblogoschat.h
index d0aac93..487a903 100644
--- a/library/liblogoschat.h
+++ b/library/liblogoschat.h
@@ -58,9 +58,6 @@ void set_event_callback(void *ctx, FFICallBack callback, void *userData);
 // Get the client's identifier
 int chat_get_id(void *ctx, FFICallBack callback, void *userData);
 
-// Get the default inbox conversation ID
-int chat_get_default_inbox_id(void *ctx, FFICallBack callback, void *userData);
-
 //////////////////////////////////////////////////////////////////////////////
 // Conversation Operations
 //////////////////////////////////////////////////////////////////////////////
@@ -75,10 +72,10 @@ int chat_get_conversation(void *ctx, FFICallBack callback, void *userData,
                           const char *convoId);
 
 // Create a new private conversation with the given IntroBundle
-// introBundleJson: JSON string with {"ident": "hex...", "ephemeral": "hex..."}
+// introBundleStr: Intro bundle ASCII string as returned by chat_create_intro_bundle
 // contentHex: Initial message content as hex-encoded string
 int chat_new_private_conversation(void *ctx, FFICallBack callback,
-                                  void *userData, const char *introBundleJson,
+                                  void *userData, const char *introBundleStr,
                                   const char *contentHex);
 
 // Send a message to a conversation
@@ -93,11 +90,11 @@ int chat_send_message(void *ctx, FFICallBack callback, void *userData,
 //////////////////////////////////////////////////////////////////////////////
 
 // Get the client identity
-// Returns JSON: {"name": "...", "address": "...", "pubkey": "hex..."}
+// Returns JSON: {"name": "..."}
 int chat_get_identity(void *ctx, FFICallBack callback, void *userData);
 
 // Create an IntroBundle for initiating private conversations
-// Returns JSON: {"ident": "hex...", "ephemeral": "hex..."}
+// Returns the intro bundle as an ASCII string (format: logos_chatintro_<version>_<base64url payload>)
 int chat_create_intro_bundle(void *ctx, FFICallBack callback, void *userData);
 
 #ifdef __cplusplus
diff --git a/library/liblogoschat.nim b/library/liblogoschat.nim
index f0f87f3..87f8de0 100644
--- a/library/liblogoschat.nim
+++ b/library/liblogoschat.nim
@@ -10,10 +10,8 @@ import stew/byteutils
 
 import
   src/chat/client,
-  src/chat/conversations,
   src/chat/identity,
   src/chat/delivery/waku_client,
-  src/chat/proto_types,
   library/declare_lib,
   library/utils
 
diff --git a/src/chat/client.nim b/src/chat/client.nim
index 0545930..3717311 100644
--- a/src/chat/client.nim
+++ b/src/chat/client.nim
@@ -139,7 +139,7 @@ proc notifyDeliveryAck(client: ChatClient, convo: Conversation,
 # Functional
 #################################################
 
-proc createIntroBundle*(self: var ChatClient): seq[byte] =
+proc createIntroBundle*(self: ChatClient): seq[byte] =
   ## Generates an IntroBundle for the client, which includes
   ## the required information to send a message.
   result = self.libchatCtx.createIntroductionBundle().valueOr:
@@ -198,6 +198,10 @@ proc parseMessage(client: ChatClient, msg: ChatPayload) {.raises: [ValueError].}
     if opt_content.isSome():
       let content = opt_content.get()
       let convo = client.getConversation(content.conversationId)
+
+      if content.isNewConvo:
+        client.notifyNewConversation(convo)
+
       # TODO: (P1) Add sender information from LibChat.
       let msg = ReceivedMessage(timestamp:getCurrentTimestamp(),content: content.data  )
       client.notifyNewMessage(convo, msg)
diff --git a/vendor/libchat b/vendor/libchat
index d903eac..a9ca4ff 160000
--- a/vendor/libchat
+++ b/vendor/libchat
@@ -1 +1 @@
-Subproject commit d903eac011f31b9db83c0860235341d4340cf5f0
+Subproject commit a9ca4ffb7de90ea4cd269350c189c19fb78a2589