diff --git a/apps/emqx_connector/src/emqx_connector_mysql.erl b/apps/emqx_connector/src/emqx_connector_mysql.erl
index a00de8426..423a6edf1 100644
--- a/apps/emqx_connector/src/emqx_connector_mysql.erl
+++ b/apps/emqx_connector/src/emqx_connector_mysql.erl
@@ -19,7 +19,6 @@
 -include_lib("emqx_resource/include/emqx_resource_behaviour.hrl").
 
 -export([ on_jsonify/1
-        , on_api_reply_format/1
         ]).
 
 %% callbacks of behaviour emqx_resource
@@ -51,11 +50,6 @@ on_jsonify(#{<<"server">> := Server, <<"user">> := User, <<"database">> := DB,
         <<"certfile">> => list_to_binary(CertFile)
     }.
 
-on_api_reply_format(ResourceData) ->
-    #{config := Conf} = Reply0 = emqx_resource_api:default_api_reply_format(ResourceData),
-    Reply0#{config => maps:without([<<"cacertfile">>, <<"keyfile">>,
-                <<"certfile">>, <<"verify">>], Conf)}.
-
 %% ===================================================================
 
 on_start(InstId, #{<<"server">> := {Host, Port},
diff --git a/apps/emqx_data_bridge/src/emqx_data_bridge_api.erl b/apps/emqx_data_bridge/src/emqx_data_bridge_api.erl
index 02b1edb99..ceb4201e1 100644
--- a/apps/emqx_data_bridge/src/emqx_data_bridge_api.erl
+++ b/apps/emqx_data_bridge/src/emqx_data_bridge_api.erl
@@ -64,7 +64,7 @@ create_bridge(#{name := Name}, Params) ->
         {error, already_created} ->
             {400, #{code => 102, message => <<"bridge already created: ", Name/binary>>}};
         {error, Reason0} ->
-            Reason = emqx_data_bridge_api:stringnify(Reason0),
+            Reason = emqx_resource_api:stringnify(Reason0),
             {500, #{code => 102, message => <<"create bridge ", Name/binary,
                         " failed:", Reason/binary>>}}
     end.
@@ -72,7 +72,7 @@ create_bridge(#{name := Name}, Params) ->
 update_bridge(#{name := Name}, Params) ->
     Config = proplists:get_value(<<"config">>, Params),
     BridgeType = proplists:get_value(<<"type">>, Params),
-    case emqx_resource:check_and_udpate(
+    case emqx_resource:check_and_update(
             emqx_data_bridge:resource_id(Name),
             emqx_data_bridge:resource_type(BridgeType), Config, []) of
         {ok, Data} ->
@@ -80,7 +80,7 @@ update_bridge(#{name := Name}, Params) ->
         {error, not_found} ->
             {400, #{code => 102, message => <<"bridge not_found: ", Name/binary>>}};
         {error, Reason0} ->
-            Reason = emqx_data_bridge_api:stringnify(Reason0),
+            Reason = emqx_resource_api:stringnify(Reason0),
             {500, #{code => 102, message => <<"update bridge ", Name/binary,
                         " failed:", Reason/binary>>}}
     end.
@@ -89,7 +89,7 @@ delete_bridge(#{name := Name}, _Params) ->
     case emqx_resource:remove(emqx_data_bridge:resource_id(Name)) of
         ok -> {200, #{code => 0, data => #{}}};
         {error, Reason} ->
-            {500, #{code => 102, message => emqx_data_bridge_api:stringnify(Reason)}}
+            {500, #{code => 102, message => emqx_resource_api:stringnify(Reason)}}
     end.
 
 is_bridge(#{id := <<"bridge:", _/binary>>}) ->
diff --git a/apps/emqx_resource/src/emqx_resource.erl b/apps/emqx_resource/src/emqx_resource.erl
index 8a974fe36..97d71fd4b 100644
--- a/apps/emqx_resource/src/emqx_resource.erl
+++ b/apps/emqx_resource/src/emqx_resource.erl
@@ -73,7 +73,6 @@
         , call_stop/3   %% stop the instance
         , call_config_merge/4 %% merge the config when updating
         , call_jsonify/2
-        , call_api_reply_format/2
         ]).
 
 -export([ list_instances/0 %% list all the instances, id only.
@@ -272,13 +271,6 @@ call_jsonify(Mod, Config) ->
         true -> ?SAFE_CALL(Mod:on_jsonify(Config))
     end.
 
--spec call_api_reply_format(module(), resource_data()) -> jsx:json_term().
-call_api_reply_format(Mod, Data) ->
-    case erlang:function_exported(Mod, on_api_reply_format, 1) of
-        false -> emqx_resource_api:default_api_reply_format(Data);
-        true -> ?SAFE_CALL(Mod:on_api_reply_format(Data))
-    end.
-
 -spec check_config(resource_type(), binary() | term()) ->
     {ok, resource_config()} | {error, term()}.
 check_config(ResourceType, RawConfig) when is_binary(RawConfig) ->