diff --git a/include/fc/rpc/json_connection.hpp b/include/fc/rpc/json_connection.hpp
index b666a74..1ce32bf 100644
--- a/include/fc/rpc/json_connection.hpp
+++ b/include/fc/rpc/json_connection.hpp
@@ -107,6 +107,17 @@ namespace fc { namespace rpc  {
                                      const variant& a7 
                                      );
 
+         future<variant> async_call( const fc::string& method, 
+                                     const variant& a1, 
+                                     const variant& a2, 
+                                     const variant& a3, 
+                                     const variant& a4, 
+                                     const variant& a5, 
+                                     const variant& a6,
+                                     const variant& a7, 
+                                     const variant& a8 
+                                     );
+
          template<typename Result>
          Result call( const fc::string& method, 
                                const variant& a1, 
diff --git a/src/rpc/json_connection.cpp b/src/rpc/json_connection.cpp
index 226d145..fa01fd0 100644
--- a/src/rpc/json_connection.cpp
+++ b/src/rpc/json_connection.cpp
@@ -518,6 +518,42 @@ namespace fc { namespace rpc {
       my->_out->flush();
       return my->_awaiting[id];
    }
+   future<variant> json_connection::async_call( const fc::string& method, 
+                                                const variant& a1, 
+                                                const variant& a2, 
+                                                const variant& a3, 
+                                                const variant& a4, const variant& a5, const variant& a6, const variant& a7, const variant& a8 )
+   {
+      auto id = my->_next_id++;
+      my->_awaiting[id] = fc::promise<variant>::ptr( new fc::promise<variant>() );
+
+      {
+         fc::scoped_lock<fc::mutex> lock(my->_write_mutex);
+         *my->_out << "{\"id\":";
+         *my->_out << id;
+         *my->_out << ",\"method\":";
+         json::to_stream( *my->_out, method );
+         *my->_out << ",\"params\":[";
+         fc::json::to_stream( *my->_out, a1 );
+         *my->_out << ",";
+         fc::json::to_stream( *my->_out, a2 );
+         *my->_out << ",";
+         fc::json::to_stream( *my->_out, a3 );
+         *my->_out << ",";
+         fc::json::to_stream( *my->_out, a4 );
+         *my->_out << ",";
+         fc::json::to_stream( *my->_out, a5 );
+         *my->_out << ",";
+         fc::json::to_stream( *my->_out, a6 );
+         *my->_out << ",";
+         fc::json::to_stream( *my->_out, a7 );
+         *my->_out << ",";
+         fc::json::to_stream( *my->_out, a8 );
+         *my->_out << "]}\n";
+      }
+      my->_out->flush();
+      return my->_awaiting[id];
+   }
 
    future<variant> json_connection::async_call( const fc::string& method, mutable_variant_object named_args )
    {