diff --git a/src/memos/api/middleware/request_context.py b/src/memos/api/middleware/request_context.py
index 74865b66f..488f59625 100644
--- a/src/memos/api/middleware/request_context.py
+++ b/src/memos/api/middleware/request_context.py
@@ -162,6 +162,17 @@ class RequestContextMiddleware(BaseHTTPMiddleware):
     3. Ensures the context is available throughout the request lifecycle
     """
 
+    def __init__(self, app, source: str | None = None):
+        """
+        Initialize the middleware.
+
+        Args:
+            app: The ASGI application
+            source: Source identifier (e.g., 'product' or 'server') to distinguish request origin
+        """
+        super().__init__(app)
+        self.source = source or "api"
+
     async def dispatch(self, request: Request, call_next: Callable) -> Response:
         # Extract or generate trace_id
         trace_id = extract_trace_id_from_headers(request) or generate_trace_id()
@@ -178,6 +189,7 @@ async def dispatch(self, request: Request, call_next: Callable) -> Response:
             env=env,
             user_type=user_type,
             user_name=user_name,
+            source=self.source,
         )
         set_request_context(context)
 
@@ -199,7 +211,7 @@ async def receive():
                 # Continue without restoring body, downstream handlers will handle it
 
         logger.info(
-            f"Request started, method: {request.method}, path: {request.url.path}, "
+            f"Request started, source: {self.source}, method: {request.method}, path: {request.url.path}, "
             f"request params: {params_log}, headers: {request.headers}"
         )
 
@@ -209,16 +221,16 @@ async def receive():
             end_time = time.time()
             if response.status_code == 200:
                 logger.info(
-                    f"Request completed: {request.url.path}, status: {response.status_code}, cost: {(end_time - start_time) * 1000:.2f}ms"
+                    f"Request completed: source: {self.source}, path: {request.url.path}, status: {response.status_code}, cost: {(end_time - start_time) * 1000:.2f}ms"
                 )
             else:
                 logger.error(
-                    f"Request Failed: {request.url.path}, status: {response.status_code}, cost: {(end_time - start_time) * 1000:.2f}ms"
+                    f"Request Failed: source: {self.source}, path: {request.url.path}, status: {response.status_code}, cost: {(end_time - start_time) * 1000:.2f}ms"
                 )
         except Exception as e:
             end_time = time.time()
             logger.error(
-                f"Request Exception Error: {e}, cost: {(end_time - start_time) * 1000:.2f}ms"
+                f"Request Exception Error: source: {self.source}, path: {request.url.path}, error: {e}, cost: {(end_time - start_time) * 1000:.2f}ms"
             )
             raise e
 
diff --git a/src/memos/api/product_api.py b/src/memos/api/product_api.py
index 709ad74fb..ec5cccae1 100644
--- a/src/memos/api/product_api.py
+++ b/src/memos/api/product_api.py
@@ -17,7 +17,7 @@
     version="1.0.1",
 )
 
-app.add_middleware(RequestContextMiddleware)
+app.add_middleware(RequestContextMiddleware, source="product_api")
 # Include routers
 app.include_router(product_router)
 
diff --git a/src/memos/api/server_api.py b/src/memos/api/server_api.py
index 24c67de48..0dfef99d9 100644
--- a/src/memos/api/server_api.py
+++ b/src/memos/api/server_api.py
@@ -18,7 +18,7 @@
     version="1.0.1",
 )
 
-app.add_middleware(RequestContextMiddleware)
+app.add_middleware(RequestContextMiddleware, source="server_api")
 # Include routers
 app.include_router(server_router)
 
diff --git a/src/memos/context/context.py b/src/memos/context/context.py
index d6a0f3bf1..b5d4c24fe 100644
--- a/src/memos/context/context.py
+++ b/src/memos/context/context.py
@@ -36,12 +36,14 @@ def __init__(
         env: str | None = None,
         user_type: str | None = None,
         user_name: str | None = None,
+        source: str | None = None,
     ):
         self.trace_id = trace_id or "trace-id"
         self.api_path = api_path
         self.env = env
         self.user_type = user_type
         self.user_name = user_name
+        self.source = source
         self._data: dict[str, Any] = {}
 
     def set(self, key: str, value: Any) -> None:
@@ -59,6 +61,7 @@ def __setattr__(self, name: str, value: Any) -> None:
             "env",
             "user_type",
             "user_name",
+            "source",
         ):
             super().__setattr__(name, value)
         else:
@@ -80,6 +83,7 @@ def to_dict(self) -> dict[str, Any]:
             "env": self.env,
             "user_type": self.user_type,
             "user_name": self.user_name,
+            "source": self.source,
             "data": self._data.copy(),
         }
 
@@ -146,6 +150,16 @@ def get_current_user_name() -> str | None:
     return "memos"
 
 
+def get_current_source() -> str | None:
+    """
+    Get the current request's source (e.g., 'product_api' or 'server_api').
+    """
+    context = _request_context.get()
+    if context:
+        return context.get("source")
+    return None
+
+
 def get_current_context() -> RequestContext | None:
     """
     Get the current request context.
@@ -161,6 +175,7 @@ def get_current_context() -> RequestContext | None:
             env=context_dict.get("env"),
             user_type=context_dict.get("user_type"),
             user_name=context_dict.get("user_name"),
+            source=context_dict.get("source"),
         )
         ctx._data = context_dict.get("data", {}).copy()
         return ctx