diff --git a/oml/oxtornado.py b/oml/oxtornado.py
index b34cdfe..23b4b91 100644
--- a/oml/oxtornado.py
+++ b/oml/oxtornado.py
@@ -83,9 +83,18 @@ class ApiHandler(tornado.web.RequestHandler):
         context = self._context
         if context is None:
             context = defaultcontext
-        action = request.arguments.get('action', [None])[0].decode('utf-8')
-        data = request.arguments.get('data', [b'{}'])[0]
-        data = json.loads(data.decode('utf-8')) if data else {}
+        action = None
+        if request.headers.get('Content-Type') == 'application/json':
+            try:
+                r = json.loads(request.body.decode())
+                action = r['action']
+                data = r['data']
+            except:
+                action = None
+        if not action:
+            action = request.arguments.get('action', [None])[0].decode('utf-8')
+            data = request.arguments.get('data', [b'{}'])[0]
+            data = json.loads(data.decode('utf-8')) if data else {}
         if not action:
             methods = list(actions.keys())
             api = []