diff --git a/src/memos/api/client.py b/src/memos/api/client.py
index 2cb8faab..d45276f2 100644
--- a/src/memos/api/client.py
+++ b/src/memos/api/client.py
@@ -19,7 +19,7 @@ class MemOSClient:
 
     def __init__(self, api_key: str | None = None, base_url: str | None = None):
         self.base_url = (
-            base_url or os.getenv("MEMOS_BASE_URL") or "https://memos.memtensor.cn/api/openmem"
+            base_url or os.getenv("MEMOS_BASE_URL") or "https://memos.memtensor.cn/api/openmem/v1"
         )
         api_key = api_key or os.getenv("MEMOS_API_KEY")
 
@@ -34,7 +34,7 @@ def _validate_required_params(self, **params):
             if not param_value:
                 raise ValueError(f"{param_name} is required")
 
-    def get_messages(
+    def get_message(
         self, user_id: str, conversation_id: str | None = None
     ) -> MemOSGetMessagesResponse:
         """Get messages"""
@@ -42,7 +42,7 @@ def get_messages(
         self._validate_required_params(user_id=user_id)
 
         url = f"{self.base_url}/get/message"
-        payload = {"userId": user_id, "conversationId": conversation_id}
+        payload = {"user_id": user_id, "conversation_id": conversation_id}
         for retry in range(MAX_RETRY_COUNT):
             try:
                 response = requests.post(
@@ -56,7 +56,7 @@ def get_messages(
                 if retry == MAX_RETRY_COUNT - 1:
                     raise
 
-    def add(
+    def add_message(
         self, messages: list[dict[str, Any]], user_id: str, conversation_id: str
     ) -> MemOSAddResponse:
         """Add memories"""
@@ -66,7 +66,7 @@ def add(
         )
 
         url = f"{self.base_url}/add/message"
-        payload = {"messages": messages, "userId": user_id, "conversationId": conversation_id}
+        payload = {"messages": messages, "user_id": user_id, "conversation_id": conversation_id}
         for retry in range(MAX_RETRY_COUNT):
             try:
                 response = requests.post(
@@ -80,7 +80,7 @@ def add(
                 if retry == MAX_RETRY_COUNT - 1:
                     raise
 
-    def search(
+    def search_memory(
         self, query: str, user_id: str, conversation_id: str, memory_limit_number: int = 6
     ) -> MemOSSearchResponse:
         """Search memories"""
@@ -90,9 +90,9 @@ def search(
         url = f"{self.base_url}/search/memory"
         payload = {
             "query": query,
-            "userId": user_id,
-            "conversationId": conversation_id,
-            "memoryLimitNumber": memory_limit_number,
+            "user_id": user_id,
+            "conversation_id": conversation_id,
+            "memory_limit_number": memory_limit_number,
         }
 
         for retry in range(MAX_RETRY_COUNT):
diff --git a/src/memos/api/product_models.py b/src/memos/api/product_models.py
index 7371c05b..9c3af42f 100644
--- a/src/memos/api/product_models.py
+++ b/src/memos/api/product_models.py
@@ -186,39 +186,20 @@ class SuggestionRequest(BaseRequest):
 class MessageDetail(BaseModel):
     """Individual message detail model based on actual API response."""
 
-    role: str = Field(..., description="Message role (user/assistant)")
-    content: str = Field(..., description="Message content")
-    create_time: int | None = Field(
-        None, alias="createTime", description="Message creation timestamp"
-    )
-    update_time: int | None = Field(
-        None, alias="updateTime", description="Message update timestamp"
-    )
+    model_config = {"extra": "allow"}
 
 
 class MemoryDetail(BaseModel):
     """Individual memory detail model based on actual API response."""
 
-    id: str = Field(..., description="Memory ID")
-    memory_key: str = Field(..., alias="memoryKey", description="Memory key/title")
-    memory_value: str = Field(..., alias="memoryValue", description="Memory content")
-    memory_type: str = Field(
-        ..., alias="memoryType", description="Memory type (e.g., WorkingMemory)"
-    )
-    memory_time: int | None = Field(None, alias="memoryTime", description="Memory timestamp")
-    conversation_id: str = Field(..., alias="conversationId", description="Conversation ID")
-    status: str = Field(..., description="Memory status (e.g., activated)")
-    confidence: float = Field(..., description="Memory confidence score")
-    tags: list[str] = Field(default_factory=list, description="Memory tags")
-    update_time: int = Field(..., alias="updateTime", description="Last update timestamp")
-    relativity: float = Field(..., description="Memory relativity/similarity score")
+    model_config = {"extra": "allow"}
 
 
 class GetMessagesData(BaseModel):
     """Data model for get messages response based on actual API."""
 
     message_detail_list: list[MessageDetail] = Field(
-        default_factory=list, alias="messageDetailList", description="List of message details"
+        default_factory=list, alias="memory_detail_list", description="List of message details"
     )
 
 
@@ -226,10 +207,10 @@ class SearchMemoryData(BaseModel):
     """Data model for search memory response based on actual API."""
 
     memory_detail_list: list[MemoryDetail] = Field(
-        default_factory=list, alias="memoryDetailList", description="List of memory details"
+        default_factory=list, alias="memory_detail_list", description="List of memory details"
     )
     message_detail_list: list[MessageDetail] | None = Field(
-        None, alias="messageDetailList", description="List of message details (usually None)"
+        None, alias="message_detail_list", description="List of message details (usually None)"
     )