diff --git a/buf.gen.yaml b/buf.gen.yaml
index 2385f3d..c4a9d1a 100644
--- a/buf.gen.yaml
+++ b/buf.gen.yaml
@@ -4,7 +4,7 @@ plugins:
     out: proto
     opt: 
       - paths=source_relative
-      - default_api_level=API_HYBRID
+      - default_api_level=API_OPAQUE
   - remote: buf.build/connectrpc/go:v1.17.0
     out: proto
     opt: paths=source_relative
diff --git a/proto/frontend/v1/service.pb.go b/proto/frontend/v1/service.pb.go
index 94f1877..d294c1d 100644
--- a/proto/frontend/v1/service.pb.go
+++ b/proto/frontend/v1/service.pb.go
@@ -4,8 +4,6 @@
 // 	protoc        (unknown)
 // source: frontend/v1/service.proto
 
-//go:build !protoopaque
-
 package v1
 
 import (
@@ -22,11 +20,11 @@ const (
 )
 
 type PutRequest struct {
-	state         protoimpl.MessageState `protogen:"hybrid.v1"`
-	Key           int64                  `protobuf:"varint,1,opt,name=key" json:"key,omitempty"`
-	Value         string                 `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
+	state            protoimpl.MessageState `protogen:"opaque.v1"`
+	xxx_hidden_Key   int64                  `protobuf:"varint,1,opt,name=key" json:"key,omitempty"`
+	xxx_hidden_Value string                 `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
+	unknownFields    protoimpl.UnknownFields
+	sizeCache        protoimpl.SizeCache
 }
 
 func (x *PutRequest) Reset() {
@@ -56,24 +54,24 @@ func (x *PutRequest) ProtoReflect() protoreflect.Message {
 
 func (x *PutRequest) GetKey() int64 {
 	if x != nil {
-		return x.Key
+		return x.xxx_hidden_Key
 	}
 	return 0
 }
 
 func (x *PutRequest) GetValue() string {
 	if x != nil {
-		return x.Value
+		return x.xxx_hidden_Value
 	}
 	return ""
 }
 
 func (x *PutRequest) SetKey(v int64) {
-	x.Key = v
+	x.xxx_hidden_Key = v
 }
 
 func (x *PutRequest) SetValue(v string) {
-	x.Value = v
+	x.xxx_hidden_Value = v
 }
 
 type PutRequest_builder struct {
@@ -87,13 +85,13 @@ func (b0 PutRequest_builder) Build() *PutRequest {
 	m0 := &PutRequest{}
 	b, x := &b0, m0
 	_, _ = b, x
-	x.Key = b.Key
-	x.Value = b.Value
+	x.xxx_hidden_Key = b.Key
+	x.xxx_hidden_Value = b.Value
 	return m0
 }
 
 type PutResponse struct {
-	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	state         protoimpl.MessageState `protogen:"opaque.v1"`
 	unknownFields protoimpl.UnknownFields
 	sizeCache     protoimpl.SizeCache
 }
@@ -136,10 +134,10 @@ func (b0 PutResponse_builder) Build() *PutResponse {
 }
 
 type GetRequest struct {
-	state         protoimpl.MessageState `protogen:"hybrid.v1"`
-	Key           int64                  `protobuf:"varint,1,opt,name=key" json:"key,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
+	state          protoimpl.MessageState `protogen:"opaque.v1"`
+	xxx_hidden_Key int64                  `protobuf:"varint,1,opt,name=key" json:"key,omitempty"`
+	unknownFields  protoimpl.UnknownFields
+	sizeCache      protoimpl.SizeCache
 }
 
 func (x *GetRequest) Reset() {
@@ -169,13 +167,13 @@ func (x *GetRequest) ProtoReflect() protoreflect.Message {
 
 func (x *GetRequest) GetKey() int64 {
 	if x != nil {
-		return x.Key
+		return x.xxx_hidden_Key
 	}
 	return 0
 }
 
 func (x *GetRequest) SetKey(v int64) {
-	x.Key = v
+	x.xxx_hidden_Key = v
 }
 
 type GetRequest_builder struct {
@@ -188,15 +186,15 @@ func (b0 GetRequest_builder) Build() *GetRequest {
 	m0 := &GetRequest{}
 	b, x := &b0, m0
 	_, _ = b, x
-	x.Key = b.Key
+	x.xxx_hidden_Key = b.Key
 	return m0
 }
 
 type GetResponse struct {
-	state         protoimpl.MessageState `protogen:"hybrid.v1"`
-	Value         string                 `protobuf:"bytes,1,opt,name=value" json:"value,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
+	state            protoimpl.MessageState `protogen:"opaque.v1"`
+	xxx_hidden_Value string                 `protobuf:"bytes,1,opt,name=value" json:"value,omitempty"`
+	unknownFields    protoimpl.UnknownFields
+	sizeCache        protoimpl.SizeCache
 }
 
 func (x *GetResponse) Reset() {
@@ -226,13 +224,13 @@ func (x *GetResponse) ProtoReflect() protoreflect.Message {
 
 func (x *GetResponse) GetValue() string {
 	if x != nil {
-		return x.Value
+		return x.xxx_hidden_Value
 	}
 	return ""
 }
 
 func (x *GetResponse) SetValue(v string) {
-	x.Value = v
+	x.xxx_hidden_Value = v
 }
 
 type GetResponse_builder struct {
@@ -245,7 +243,7 @@ func (b0 GetResponse_builder) Build() *GetResponse {
 	m0 := &GetResponse{}
 	b, x := &b0, m0
 	_, _ = b, x
-	x.Value = b.Value
+	x.xxx_hidden_Value = b.Value
 	return m0
 }