diff --git a/gen-go/agent/trace/v1/trace_service.pb.go b/gen-go/agent/trace/v1/trace_service.pb.go
index 9daa942..9400ef2 100644
--- a/gen-go/agent/trace/v1/trace_service.pb.go
+++ b/gen-go/agent/trace/v1/trace_service.pb.go
@@ -40,7 +40,7 @@ func (m *ConfigTraceServiceRequest) Reset()         { *m = ConfigTraceServiceReq
 func (m *ConfigTraceServiceRequest) String() string { return proto.CompactTextString(m) }
 func (*ConfigTraceServiceRequest) ProtoMessage()    {}
 func (*ConfigTraceServiceRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_trace_service_becc484d53bc0469, []int{0}
+	return fileDescriptor_trace_service_63b50dd6ac862852, []int{0}
 }
 func (m *ConfigTraceServiceRequest) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ConfigTraceServiceRequest.Unmarshal(m, b)
@@ -86,7 +86,7 @@ func (m *ConfigTraceServiceResponse) Reset()         { *m = ConfigTraceServiceRe
 func (m *ConfigTraceServiceResponse) String() string { return proto.CompactTextString(m) }
 func (*ConfigTraceServiceResponse) ProtoMessage()    {}
 func (*ConfigTraceServiceResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_trace_service_becc484d53bc0469, []int{1}
+	return fileDescriptor_trace_service_63b50dd6ac862852, []int{1}
 }
 func (m *ConfigTraceServiceResponse) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ConfigTraceServiceResponse.Unmarshal(m, b)
@@ -127,7 +127,7 @@ func (m *ExportTraceServiceRequest) Reset()         { *m = ExportTraceServiceReq
 func (m *ExportTraceServiceRequest) String() string { return proto.CompactTextString(m) }
 func (*ExportTraceServiceRequest) ProtoMessage()    {}
 func (*ExportTraceServiceRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_trace_service_becc484d53bc0469, []int{2}
+	return fileDescriptor_trace_service_63b50dd6ac862852, []int{2}
 }
 func (m *ExportTraceServiceRequest) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ExportTraceServiceRequest.Unmarshal(m, b)
@@ -171,7 +171,7 @@ func (m *ExportTraceServiceResponse) Reset()         { *m = ExportTraceServiceRe
 func (m *ExportTraceServiceResponse) String() string { return proto.CompactTextString(m) }
 func (*ExportTraceServiceResponse) ProtoMessage()    {}
 func (*ExportTraceServiceResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_trace_service_becc484d53bc0469, []int{3}
+	return fileDescriptor_trace_service_63b50dd6ac862852, []int{3}
 }
 func (m *ExportTraceServiceResponse) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_ExportTraceServiceResponse.Unmarshal(m, b)
@@ -210,12 +210,12 @@ const _ = grpc.SupportPackageIsVersion4
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type TraceServiceClient interface {
-	// After the initialization this RPC must be kept alive for the
-	// entire life of the application. Agent pushes configs to the
-	// application via a stream of responses.
+	// After initialization, this RPC must be kept alive for the
+	// entire life of the application. The agent pushes configs
+	// down to applications via a stream of requests.
 	Config(ctx context.Context, opts ...grpc.CallOption) (TraceService_ConfigClient, error)
-	// Allow to export Spans.
-	// For performance reason, it is recommended to keep this RPC
+	// Allows applications to send spans to the agent.
+	// For performance reasons, it is recommended to keep this RPC
 	// alive for the entire life of the application.
 	Export(ctx context.Context, opts ...grpc.CallOption) (TraceService_ExportClient, error)
 }
@@ -238,8 +238,8 @@ func (c *traceServiceClient) Config(ctx context.Context, opts ...grpc.CallOption
 }
 
 type TraceService_ConfigClient interface {
-	Send(*ConfigTraceServiceRequest) error
-	Recv() (*ConfigTraceServiceResponse, error)
+	Send(*ConfigTraceServiceResponse) error
+	Recv() (*ConfigTraceServiceRequest, error)
 	grpc.ClientStream
 }
 
@@ -247,12 +247,12 @@ type traceServiceConfigClient struct {
 	grpc.ClientStream
 }
 
-func (x *traceServiceConfigClient) Send(m *ConfigTraceServiceRequest) error {
+func (x *traceServiceConfigClient) Send(m *ConfigTraceServiceResponse) error {
 	return x.ClientStream.SendMsg(m)
 }
 
-func (x *traceServiceConfigClient) Recv() (*ConfigTraceServiceResponse, error) {
-	m := new(ConfigTraceServiceResponse)
+func (x *traceServiceConfigClient) Recv() (*ConfigTraceServiceRequest, error) {
+	m := new(ConfigTraceServiceRequest)
 	if err := x.ClientStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
@@ -292,12 +292,12 @@ func (x *traceServiceExportClient) Recv() (*ExportTraceServiceResponse, error) {
 
 // TraceServiceServer is the server API for TraceService service.
 type TraceServiceServer interface {
-	// After the initialization this RPC must be kept alive for the
-	// entire life of the application. Agent pushes configs to the
-	// application via a stream of responses.
+	// After initialization, this RPC must be kept alive for the
+	// entire life of the application. The agent pushes configs
+	// down to applications via a stream of requests.
 	Config(TraceService_ConfigServer) error
-	// Allow to export Spans.
-	// For performance reason, it is recommended to keep this RPC
+	// Allows applications to send spans to the agent.
+	// For performance reasons, it is recommended to keep this RPC
 	// alive for the entire life of the application.
 	Export(TraceService_ExportServer) error
 }
@@ -311,8 +311,8 @@ func _TraceService_Config_Handler(srv interface{}, stream grpc.ServerStream) err
 }
 
 type TraceService_ConfigServer interface {
-	Send(*ConfigTraceServiceResponse) error
-	Recv() (*ConfigTraceServiceRequest, error)
+	Send(*ConfigTraceServiceRequest) error
+	Recv() (*ConfigTraceServiceResponse, error)
 	grpc.ServerStream
 }
 
@@ -320,12 +320,12 @@ type traceServiceConfigServer struct {
 	grpc.ServerStream
 }
 
-func (x *traceServiceConfigServer) Send(m *ConfigTraceServiceResponse) error {
+func (x *traceServiceConfigServer) Send(m *ConfigTraceServiceRequest) error {
 	return x.ServerStream.SendMsg(m)
 }
 
-func (x *traceServiceConfigServer) Recv() (*ConfigTraceServiceRequest, error) {
-	m := new(ConfigTraceServiceRequest)
+func (x *traceServiceConfigServer) Recv() (*ConfigTraceServiceResponse, error) {
+	m := new(ConfigTraceServiceResponse)
 	if err := x.ServerStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
@@ -380,32 +380,32 @@ var _TraceService_serviceDesc = grpc.ServiceDesc{
 }
 
 func init() {
-	proto.RegisterFile("opencensus/proto/agent/trace/v1/trace_service.proto", fileDescriptor_trace_service_becc484d53bc0469)
+	proto.RegisterFile("opencensus/proto/agent/trace/v1/trace_service.proto", fileDescriptor_trace_service_63b50dd6ac862852)
 }
 
-var fileDescriptor_trace_service_becc484d53bc0469 = []byte{
+var fileDescriptor_trace_service_63b50dd6ac862852 = []byte{
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 }