diff --git a/builder.py b/builder.py
index 8e48151..6158a50 100644
--- a/builder.py
+++ b/builder.py
@@ -13,6 +13,7 @@
         #include <session.h>
         #include <tf_model.h>
         #include <ops/tf.h>
+        #include <ops/noop.h>
         #include <plugin.h>
         """,
         include_dirs=incdirs,
@@ -158,6 +159,11 @@
         """
 )
 
+# Noop API
+ffibuilder.cdef("""
+        int vaccel_noop(struct vaccel_session *sess);
+        """
+)
 
 if __name__ == "__main__":
     ffibuilder.compile(verbose=True)
diff --git a/vaccel/_vaccel.c b/vaccel/_vaccel.c
index facbae7..8ebb4dc 100644
--- a/vaccel/_vaccel.c
+++ b/vaccel/_vaccel.c
@@ -570,6 +570,7 @@ static void (*_cffi_call_python_org)(struct _cffi_externpy_s *, char *);
         #include <session.h>
         #include <tf_model.h>
         #include <ops/tf.h>
+        #include <ops/noop.h>
         #include <plugin.h>
         
 
@@ -983,6 +984,44 @@ _cffi_f_unregister_plugin(PyObject *self, PyObject *arg0)
 #  define _cffi_f_unregister_plugin _cffi_d_unregister_plugin
 #endif
 
+static int _cffi_d_vaccel_noop(struct vaccel_session * x0)
+{
+  return vaccel_noop(x0);
+}
+#ifndef PYPY_VERSION
+static PyObject *
+_cffi_f_vaccel_noop(PyObject *self, PyObject *arg0)
+{
+  struct vaccel_session * x0;
+  Py_ssize_t datasize;
+  struct _cffi_freeme_s *large_args_free = NULL;
+  int result;
+  PyObject *pyresult;
+
+  datasize = _cffi_prepare_pointer_call_argument(
+      _cffi_type(11), arg0, (char **)&x0);
+  if (datasize != 0) {
+    x0 = ((size_t)datasize) <= 640 ? (struct vaccel_session *)alloca((size_t)datasize) : NULL;
+    if (_cffi_convert_array_argument(_cffi_type(11), arg0, (char **)&x0,
+            datasize, &large_args_free) < 0)
+      return NULL;
+  }
+
+  Py_BEGIN_ALLOW_THREADS
+  _cffi_restore_errno();
+  { result = vaccel_noop(x0); }
+  _cffi_save_errno();
+  Py_END_ALLOW_THREADS
+
+  (void)self; /* unused */
+  pyresult = _cffi_from_c_int(result, int);
+  if (large_args_free != NULL) _cffi_free_array_arguments(large_args_free);
+  return pyresult;
+}
+#else
+#  define _cffi_f_vaccel_noop _cffi_d_vaccel_noop
+#endif
+
 static int _cffi_d_vaccel_sess_free(struct vaccel_session * x0)
 {
   return vaccel_sess_free(x0);
@@ -1717,6 +1756,7 @@ static const struct _cffi_global_s _cffi_globals[] = {
   { "register_plugin_function", (void *)_cffi_f_register_plugin_function, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_O, 0), (void *)_cffi_d_register_plugin_function },
   { "register_plugin_functions", (void *)_cffi_f_register_plugin_functions, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_V, 3), (void *)_cffi_d_register_plugin_functions },
   { "unregister_plugin", (void *)_cffi_f_unregister_plugin, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_O, 7), (void *)_cffi_d_unregister_plugin },
+  { "vaccel_noop", (void *)_cffi_f_vaccel_noop, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_O, 10), (void *)_cffi_d_vaccel_noop },
   { "vaccel_sess_free", (void *)_cffi_f_vaccel_sess_free, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_O, 10), (void *)_cffi_d_vaccel_sess_free },
   { "vaccel_sess_has_resource", (void *)_cffi_f_vaccel_sess_has_resource, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_V, 13), (void *)_cffi_d_vaccel_sess_has_resource },
   { "vaccel_sess_init", (void *)_cffi_f_vaccel_sess_init, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_V, 34), (void *)_cffi_d_vaccel_sess_init },
@@ -1811,7 +1851,7 @@ static const struct _cffi_type_context_s _cffi_type_context = {
   _cffi_struct_unions,
   _cffi_enums,
   _cffi_typenames,
-  39,  /* num_globals */
+  40,  /* num_globals */
   10,  /* num_struct_unions */
   1,  /* num_enums */
   1,  /* num_typenames */
diff --git a/vaccel/noop.py b/vaccel/noop.py
new file mode 100644
index 0000000..07f9b7c
--- /dev/null
+++ b/vaccel/noop.py
@@ -0,0 +1,19 @@
+from vaccel._vaccel import lib, ffi
+from vaccel.error import VaccelError
+
+from vaccel.session import Session
+
+class Noop:
+    def __init__(self):
+        """exec vAccel Noop"""
+        printf("test init")
+
+    def __del__(self):
+        printf("test del")
+
+    @classmethod
+    def noop(self, session):
+        """exec the operation"""
+        csession = session._to_inner()
+        return lib.vaccel_noop(csession)
+
diff --git a/vaccel/test.py b/vaccel/test.py
index f30fae4..0daeade 100644
--- a/vaccel/test.py
+++ b/vaccel/test.py
@@ -1 +1,11 @@
 import vaccel
+
+from vaccel.session import Session
+from vaccel.noop import Noop
+
+a = Session(flags=0)
+b = Session(flags=1)
+
+print(a.id(), b.id())
+
+c = Noop.noop(a)