diff --git a/pkg/hyper/realm.go b/pkg/hyper/realm.go
index 6f4dd5f..04a9919 100644
--- a/pkg/hyper/realm.go
+++ b/pkg/hyper/realm.go
@@ -1,29 +1,81 @@
 package hyper
 
-import "git.solsynth.dev/hydrogen/dealer/pkg/proto"
+import (
+	"errors"
+	"fmt"
+	"reflect"
+
+	"git.solsynth.dev/hydrogen/dealer/pkg/proto"
+	jsoniter "github.com/json-iterator/go"
+	"gorm.io/datatypes"
+	"gorm.io/gorm"
+)
 
 type BaseRealm struct {
 	BaseModel
 
-	Alias       string `json:"alias"`
-	Name        string `json:"name"`
-	Description string `json:"description"`
-	Avatar      string `json:"avatar"`
-	Banner      string `json:"banner"`
-	IsPublic    bool   `json:"is_public"`
-	IsCommunity bool   `json:"is_community"`
+	Alias        string            `json:"alias"`
+	Name         string            `json:"name"`
+	Description  string            `json:"description"`
+	Avatar       string            `json:"avatar"`
+	Banner       string            `json:"banner"`
+	IsPublic     bool              `json:"is_public"`
+	IsCommunity  bool              `json:"is_community"`
+	AccessPolicy datatypes.JSONMap `json:"access_policy"`
 }
 
 // LinkRealm will help you build a BaseRealm model from proto.RealmInfo
-// WARNING This function doesn't like the LinkAccount, it will not help you deal the database stuff
-func LinkRealm(info *proto.RealmInfo) BaseRealm {
-	return BaseRealm{
-		Alias:       info.Alias,
-		Name:        info.Name,
-		Description: info.Description,
-		Avatar:      info.Avatar,
-		Banner:      info.Banner,
-		IsPublic:    info.IsPublic,
-		IsCommunity: info.IsCommunity,
+func LinkRealm(tx *gorm.DB, table string, info *proto.RealmInfo) (BaseRealm, error) {
+	var realm BaseRealm
+	if info == nil {
+		return realm, fmt.Errorf("remote realm info was not found")
 	}
+	if err := tx.
+		Where("id = ?", info.GetId()).
+		Table(table).
+		First(&realm).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			realm = BaseRealm{
+				Alias:        info.Alias,
+				Name:         info.Name,
+				Description:  info.Description,
+				Avatar:       info.Avatar,
+				Banner:       info.Banner,
+				IsPublic:     info.IsPublic,
+				IsCommunity:  info.IsCommunity,
+				AccessPolicy: DecodeAccessPolicy(info.AccessPolicy),
+			}
+
+			return realm, tx.Table(table).Save(&realm).Error
+		}
+		return realm, err
+	}
+
+	prev := realm
+	realm.Alias = info.Alias
+	realm.Name = info.Name
+	realm.Description = info.Description
+	realm.Avatar = info.Avatar
+	realm.Banner = info.Banner
+	realm.IsPublic = info.IsPublic
+	realm.IsCommunity = info.IsCommunity
+	realm.AccessPolicy = DecodeAccessPolicy(info.AccessPolicy)
+
+	var err error
+	if !reflect.DeepEqual(prev, realm) {
+		err = tx.Table(table).Save(&realm).Error
+	}
+
+	return realm, err
+}
+
+func EncodeAccessPolicy(policy map[string]any) []byte {
+	raw, _ := jsoniter.Marshal(policy)
+	return raw
+}
+
+func DecodeAccessPolicy(raw []byte) map[string]any {
+	var policy map[string]any
+	_ = jsoniter.Unmarshal(raw, &policy)
+	return policy
 }
diff --git a/pkg/proto/realm.pb.go b/pkg/proto/realm.pb.go
index 15c8b87..a0e64f7 100644
--- a/pkg/proto/realm.pb.go
+++ b/pkg/proto/realm.pb.go
@@ -25,14 +25,15 @@ type RealmInfo struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id          uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	Alias       string `protobuf:"bytes,2,opt,name=alias,proto3" json:"alias,omitempty"`
-	Name        string `protobuf:"bytes,3,opt,name=name,proto3" json:"name,omitempty"`
-	Description string `protobuf:"bytes,4,opt,name=description,proto3" json:"description,omitempty"`
-	Avatar      string `protobuf:"bytes,6,opt,name=avatar,proto3" json:"avatar,omitempty"`
-	Banner      string `protobuf:"bytes,7,opt,name=banner,proto3" json:"banner,omitempty"`
-	IsPublic    bool   `protobuf:"varint,9,opt,name=is_public,json=isPublic,proto3" json:"is_public,omitempty"`
-	IsCommunity bool   `protobuf:"varint,10,opt,name=is_community,json=isCommunity,proto3" json:"is_community,omitempty"`
+	Id           uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Alias        string `protobuf:"bytes,2,opt,name=alias,proto3" json:"alias,omitempty"`
+	Name         string `protobuf:"bytes,3,opt,name=name,proto3" json:"name,omitempty"`
+	Description  string `protobuf:"bytes,4,opt,name=description,proto3" json:"description,omitempty"`
+	Avatar       string `protobuf:"bytes,6,opt,name=avatar,proto3" json:"avatar,omitempty"`
+	Banner       string `protobuf:"bytes,7,opt,name=banner,proto3" json:"banner,omitempty"`
+	IsPublic     bool   `protobuf:"varint,9,opt,name=is_public,json=isPublic,proto3" json:"is_public,omitempty"`
+	IsCommunity  bool   `protobuf:"varint,10,opt,name=is_community,json=isCommunity,proto3" json:"is_community,omitempty"`
+	AccessPolicy []byte `protobuf:"bytes,11,opt,name=access_policy,json=accessPolicy,proto3" json:"access_policy,omitempty"`
 }
 
 func (x *RealmInfo) Reset() {
@@ -123,6 +124,13 @@ func (x *RealmInfo) GetIsCommunity() bool {
 	return false
 }
 
+func (x *RealmInfo) GetAccessPolicy() []byte {
+	if x != nil {
+		return x.AccessPolicy
+	}
+	return nil
+}
+
 type ListRealmRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -331,7 +339,7 @@ type RealmMemberLookupRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	RealmId uint64  `protobuf:"varint,1,opt,name=realm_id,json=realmId,proto3" json:"realm_id,omitempty"`
+	RealmId *uint64 `protobuf:"varint,1,opt,name=realm_id,json=realmId,proto3,oneof" json:"realm_id,omitempty"`
 	UserId  *uint64 `protobuf:"varint,2,opt,name=user_id,json=userId,proto3,oneof" json:"user_id,omitempty"`
 }
 
@@ -368,8 +376,8 @@ func (*RealmMemberLookupRequest) Descriptor() ([]byte, []int) {
 }
 
 func (x *RealmMemberLookupRequest) GetRealmId() uint64 {
-	if x != nil {
-		return x.RealmId
+	if x != nil && x.RealmId != nil {
+		return *x.RealmId
 	}
 	return 0
 }
@@ -605,7 +613,7 @@ var File_realm_proto protoreflect.FileDescriptor
 
 var file_realm_proto_rawDesc = []byte{
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@@ -618,91 +626,94 @@ var file_realm_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/pkg/proto/realm.proto b/pkg/proto/realm.proto
index 6ed5cd6..cdcbd70 100644
--- a/pkg/proto/realm.proto
+++ b/pkg/proto/realm.proto
@@ -23,6 +23,7 @@ message RealmInfo {
   string banner = 7;
   bool is_public = 9;
   bool is_community = 10;
+  bytes access_policy = 11;
 }
 
 message ListRealmRequest {
@@ -44,7 +45,7 @@ message ListRealmResponse {
 }
 
 message RealmMemberLookupRequest {
-  uint64 realm_id = 1;
+  optional uint64 realm_id = 1;
   optional uint64 user_id = 2;
 }
 
@@ -66,4 +67,4 @@ message CheckRealmPermRequest {
 
 message CheckRealmPermResponse {
   bool is_success = 1;
-}
\ No newline at end of file
+}