diff --git a/pkg/proto/mls/database/intents.pb.go b/pkg/proto/mls/database/intents.pb.go
index 420ecd00..df3672b8 100644
--- a/pkg/proto/mls/database/intents.pb.go
+++ b/pkg/proto/mls/database/intents.pb.go
@@ -618,20 +618,76 @@ func (x *RemoveMembersData_V1) GetAddressesOrInstallationIds() *AddressesOrInsta
 	return nil
 }
 
+// An installation
+type PostCommitAction_Installation struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	InstallationKey []byte `protobuf:"bytes,1,opt,name=installation_key,json=installationKey,proto3" json:"installation_key,omitempty"`
+	HpkePublicKey   []byte `protobuf:"bytes,2,opt,name=hpke_public_key,json=hpkePublicKey,proto3" json:"hpke_public_key,omitempty"`
+}
+
+func (x *PostCommitAction_Installation) Reset() {
+	*x = PostCommitAction_Installation{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mls_database_intents_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PostCommitAction_Installation) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PostCommitAction_Installation) ProtoMessage() {}
+
+func (x *PostCommitAction_Installation) ProtoReflect() protoreflect.Message {
+	mi := &file_mls_database_intents_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PostCommitAction_Installation.ProtoReflect.Descriptor instead.
+func (*PostCommitAction_Installation) Descriptor() ([]byte, []int) {
+	return file_mls_database_intents_proto_rawDescGZIP(), []int{6, 0}
+}
+
+func (x *PostCommitAction_Installation) GetInstallationKey() []byte {
+	if x != nil {
+		return x.InstallationKey
+	}
+	return nil
+}
+
+func (x *PostCommitAction_Installation) GetHpkePublicKey() []byte {
+	if x != nil {
+		return x.HpkePublicKey
+	}
+	return nil
+}
+
 // SendWelcome message
 type PostCommitAction_SendWelcomes struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	InstallationIds [][]byte `protobuf:"bytes,1,rep,name=installation_ids,json=installationIds,proto3" json:"installation_ids,omitempty"`
-	WelcomeMessage  []byte   `protobuf:"bytes,2,opt,name=welcome_message,json=welcomeMessage,proto3" json:"welcome_message,omitempty"`
+	Installations  []*PostCommitAction_Installation `protobuf:"bytes,1,rep,name=installations,proto3" json:"installations,omitempty"`
+	WelcomeMessage []byte                           `protobuf:"bytes,2,opt,name=welcome_message,json=welcomeMessage,proto3" json:"welcome_message,omitempty"`
 }
 
 func (x *PostCommitAction_SendWelcomes) Reset() {
 	*x = PostCommitAction_SendWelcomes{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mls_database_intents_proto_msgTypes[10]
+		mi := &file_mls_database_intents_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -644,7 +700,7 @@ func (x *PostCommitAction_SendWelcomes) String() string {
 func (*PostCommitAction_SendWelcomes) ProtoMessage() {}
 
 func (x *PostCommitAction_SendWelcomes) ProtoReflect() protoreflect.Message {
-	mi := &file_mls_database_intents_proto_msgTypes[10]
+	mi := &file_mls_database_intents_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -657,12 +713,12 @@ func (x *PostCommitAction_SendWelcomes) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PostCommitAction_SendWelcomes.ProtoReflect.Descriptor instead.
 func (*PostCommitAction_SendWelcomes) Descriptor() ([]byte, []int) {
-	return file_mls_database_intents_proto_rawDescGZIP(), []int{6, 0}
+	return file_mls_database_intents_proto_rawDescGZIP(), []int{6, 1}
 }
 
-func (x *PostCommitAction_SendWelcomes) GetInstallationIds() [][]byte {
+func (x *PostCommitAction_SendWelcomes) GetInstallations() []*PostCommitAction_Installation {
 	if x != nil {
-		return x.InstallationIds
+		return x.Installations
 	}
 	return nil
 }
@@ -736,33 +792,42 @@ var file_mls_database_intents_proto_rawDesc = []byte{
 	0x4f, 0x72, 0x49, 0x6e, 0x73, 0x74, 0x61, 0x6c, 0x6c, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x49, 0x64,
 	0x73, 0x52, 0x1a, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x65, 0x73, 0x4f, 0x72, 0x49, 0x6e,
 	0x73, 0x74, 0x61, 0x6c, 0x6c, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x49, 0x64, 0x73, 0x42, 0x09, 0x0a,
-	0x07, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x22, 0xd7, 0x01, 0x0a, 0x10, 0x50, 0x6f, 0x73,
+	0x07, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x22, 0xe8, 0x02, 0x0a, 0x10, 0x50, 0x6f, 0x73,
 	0x74, 0x43, 0x6f, 0x6d, 0x6d, 0x69, 0x74, 0x41, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x57, 0x0a,
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+	0xea, 0x02, 0x13, 0x58, 0x6d, 0x74, 0x70, 0x3a, 0x3a, 0x4d, 0x6c, 0x73, 0x3a, 0x3a, 0x44, 0x61,
+	0x74, 0x61, 0x62, 0x61, 0x73, 0x65, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -777,7 +842,7 @@ func file_mls_database_intents_proto_rawDescGZIP() []byte {
 	return file_mls_database_intents_proto_rawDescData
 }
 
-var file_mls_database_intents_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
+var file_mls_database_intents_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
 var file_mls_database_intents_proto_goTypes = []interface{}{
 	(*SendMessageData)(nil),               // 0: xmtp.mls.database.SendMessageData
 	(*AccountAddresses)(nil),              // 1: xmtp.mls.database.AccountAddresses
@@ -789,7 +854,8 @@ var file_mls_database_intents_proto_goTypes = []interface{}{
 	(*SendMessageData_V1)(nil),            // 7: xmtp.mls.database.SendMessageData.V1
 	(*AddMembersData_V1)(nil),             // 8: xmtp.mls.database.AddMembersData.V1
 	(*RemoveMembersData_V1)(nil),          // 9: xmtp.mls.database.RemoveMembersData.V1
-	(*PostCommitAction_SendWelcomes)(nil), // 10: xmtp.mls.database.PostCommitAction.SendWelcomes
+	(*PostCommitAction_Installation)(nil), // 10: xmtp.mls.database.PostCommitAction.Installation
+	(*PostCommitAction_SendWelcomes)(nil), // 11: xmtp.mls.database.PostCommitAction.SendWelcomes
 }
 var file_mls_database_intents_proto_depIdxs = []int32{
 	7,  // 0: xmtp.mls.database.SendMessageData.v1:type_name -> xmtp.mls.database.SendMessageData.V1
@@ -797,14 +863,15 @@ var file_mls_database_intents_proto_depIdxs = []int32{
 	2,  // 2: xmtp.mls.database.AddressesOrInstallationIds.installation_ids:type_name -> xmtp.mls.database.InstallationIds
 	8,  // 3: xmtp.mls.database.AddMembersData.v1:type_name -> xmtp.mls.database.AddMembersData.V1
 	9,  // 4: xmtp.mls.database.RemoveMembersData.v1:type_name -> xmtp.mls.database.RemoveMembersData.V1
-	10, // 5: xmtp.mls.database.PostCommitAction.send_welcomes:type_name -> xmtp.mls.database.PostCommitAction.SendWelcomes
+	11, // 5: xmtp.mls.database.PostCommitAction.send_welcomes:type_name -> xmtp.mls.database.PostCommitAction.SendWelcomes
 	3,  // 6: xmtp.mls.database.AddMembersData.V1.addresses_or_installation_ids:type_name -> xmtp.mls.database.AddressesOrInstallationIds
 	3,  // 7: xmtp.mls.database.RemoveMembersData.V1.addresses_or_installation_ids:type_name -> xmtp.mls.database.AddressesOrInstallationIds
-	8,  // [8:8] is the sub-list for method output_type
-	8,  // [8:8] is the sub-list for method input_type
-	8,  // [8:8] is the sub-list for extension type_name
-	8,  // [8:8] is the sub-list for extension extendee
-	0,  // [0:8] is the sub-list for field type_name
+	10, // 8: xmtp.mls.database.PostCommitAction.SendWelcomes.installations:type_name -> xmtp.mls.database.PostCommitAction.Installation
+	9,  // [9:9] is the sub-list for method output_type
+	9,  // [9:9] is the sub-list for method input_type
+	9,  // [9:9] is the sub-list for extension type_name
+	9,  // [9:9] is the sub-list for extension extendee
+	0,  // [0:9] is the sub-list for field type_name
 }
 
 func init() { file_mls_database_intents_proto_init() }
@@ -934,6 +1001,18 @@ func file_mls_database_intents_proto_init() {
 			}
 		}
 		file_mls_database_intents_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PostCommitAction_Installation); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mls_database_intents_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*PostCommitAction_SendWelcomes); i {
 			case 0:
 				return &v.state
@@ -968,7 +1047,7 @@ func file_mls_database_intents_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_mls_database_intents_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   11,
+			NumMessages:   12,
 			NumExtensions: 0,
 			NumServices:   0,
 		},