diff --git a/src/blackbox/vlms.py b/src/blackbox/vlms.py
index 6765260..b7d37e2 100644
--- a/src/blackbox/vlms.py
+++ b/src/blackbox/vlms.py
@@ -12,6 +12,7 @@ import requests
 import base64
 import copy
 import ast
+import json
 
 import io 
 from PIL import Image
@@ -93,7 +94,6 @@ class VLMS(Blackbox):
             response: a string 
             history: a list
         """
-
         if settings:
             for k in settings:
                 if k not in self.settings:
@@ -260,14 +260,19 @@ class VLMS(Blackbox):
         ## TODO: add support for multiple images and support image in form-data format
         json_request = True
         try:
-            content_type = request.headers['content-type']
+            content_type = request.headers.get('content-type', '')
+            print(content_type)
             if content_type == 'application/json':
                 data = await request.json()
-            else:
+            elif 'multipart/form-data' in content_type:
                 data = await request.form()
-                json_request = False
+                json_request = False             
+            else:
+                body = await request.body()
+                data = json.loads(body.decode("utf-8"))
+
         except Exception as e:
-            return JSONResponse(content={"error": "json parse error"}, status_code=status.HTTP_400_BAD_REQUEST)
+            return JSONResponse(content={"error": "json parse error"}, status_code=status.HTTP_400_BAD_REQUEST)    
         
         model_name = data.get("model_name")
         prompt = data.get("prompt")
@@ -283,8 +288,8 @@ class VLMS(Blackbox):
         else:
             return JSONResponse(content={"error": "context format error, should be in format of list or Openai_format"}, status_code=status.HTTP_400_BAD_REQUEST)
         
-        if json_request:
-            img_data = data.get("img_data")    
+        if json_request or 'multipart/form-data' not in content_type:
+            img_data = data.get("img_data")
         else:
             img_data = await data.get("img_data").read()
             if settings: settings = ast.literal_eval(settings)