diff --git a/gen/go/types/value.pb.go b/gen/go/types/value.pb.go
index 1a48afd4..20babd1a 100644
--- a/gen/go/types/value.pb.go
+++ b/gen/go/types/value.pb.go
@@ -20,6 +20,51 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type BoolValue struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Value bool `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *BoolValue) Reset() {
+	*x = BoolValue{}
+	mi := &file_types_value_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *BoolValue) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*BoolValue) ProtoMessage() {}
+
+func (x *BoolValue) ProtoReflect() protoreflect.Message {
+	mi := &file_types_value_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use BoolValue.ProtoReflect.Descriptor instead.
+func (*BoolValue) Descriptor() ([]byte, []int) {
+	return file_types_value_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *BoolValue) GetValue() bool {
+	if x != nil {
+		return x.Value
+	}
+	return false
+}
+
 type StringValue struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -30,7 +75,7 @@ type StringValue struct {
 
 func (x *StringValue) Reset() {
 	*x = StringValue{}
-	mi := &file_types_value_proto_msgTypes[0]
+	mi := &file_types_value_proto_msgTypes[1]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -42,7 +87,7 @@ func (x *StringValue) String() string {
 func (*StringValue) ProtoMessage() {}
 
 func (x *StringValue) ProtoReflect() protoreflect.Message {
-	mi := &file_types_value_proto_msgTypes[0]
+	mi := &file_types_value_proto_msgTypes[1]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -55,7 +100,7 @@ func (x *StringValue) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use StringValue.ProtoReflect.Descriptor instead.
 func (*StringValue) Descriptor() ([]byte, []int) {
-	return file_types_value_proto_rawDescGZIP(), []int{0}
+	return file_types_value_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *StringValue) GetValue() string {
@@ -75,7 +120,7 @@ type BytesValue struct {
 
 func (x *BytesValue) Reset() {
 	*x = BytesValue{}
-	mi := &file_types_value_proto_msgTypes[1]
+	mi := &file_types_value_proto_msgTypes[2]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -87,7 +132,7 @@ func (x *BytesValue) String() string {
 func (*BytesValue) ProtoMessage() {}
 
 func (x *BytesValue) ProtoReflect() protoreflect.Message {
-	mi := &file_types_value_proto_msgTypes[1]
+	mi := &file_types_value_proto_msgTypes[2]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -100,7 +145,7 @@ func (x *BytesValue) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use BytesValue.ProtoReflect.Descriptor instead.
 func (*BytesValue) Descriptor() ([]byte, []int) {
-	return file_types_value_proto_rawDescGZIP(), []int{1}
+	return file_types_value_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *BytesValue) GetValue() []byte {
@@ -120,7 +165,7 @@ type StringList struct {
 
 func (x *StringList) Reset() {
 	*x = StringList{}
-	mi := &file_types_value_proto_msgTypes[2]
+	mi := &file_types_value_proto_msgTypes[3]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -132,7 +177,7 @@ func (x *StringList) String() string {
 func (*StringList) ProtoMessage() {}
 
 func (x *StringList) ProtoReflect() protoreflect.Message {
-	mi := &file_types_value_proto_msgTypes[2]
+	mi := &file_types_value_proto_msgTypes[3]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -145,7 +190,7 @@ func (x *StringList) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use StringList.ProtoReflect.Descriptor instead.
 func (*StringList) Descriptor() ([]byte, []int) {
-	return file_types_value_proto_rawDescGZIP(), []int{2}
+	return file_types_value_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *StringList) GetValues() []string {
@@ -165,7 +210,7 @@ type Int64Value struct {
 
 func (x *Int64Value) Reset() {
 	*x = Int64Value{}
-	mi := &file_types_value_proto_msgTypes[3]
+	mi := &file_types_value_proto_msgTypes[4]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -177,7 +222,7 @@ func (x *Int64Value) String() string {
 func (*Int64Value) ProtoMessage() {}
 
 func (x *Int64Value) ProtoReflect() protoreflect.Message {
-	mi := &file_types_value_proto_msgTypes[3]
+	mi := &file_types_value_proto_msgTypes[4]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -190,7 +235,7 @@ func (x *Int64Value) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Int64Value.ProtoReflect.Descriptor instead.
 func (*Int64Value) Descriptor() ([]byte, []int) {
-	return file_types_value_proto_rawDescGZIP(), []int{3}
+	return file_types_value_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *Int64Value) GetValue() int64 {
@@ -210,7 +255,7 @@ type Int64List struct {
 
 func (x *Int64List) Reset() {
 	*x = Int64List{}
-	mi := &file_types_value_proto_msgTypes[4]
+	mi := &file_types_value_proto_msgTypes[5]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -222,7 +267,7 @@ func (x *Int64List) String() string {
 func (*Int64List) ProtoMessage() {}
 
 func (x *Int64List) ProtoReflect() protoreflect.Message {
-	mi := &file_types_value_proto_msgTypes[4]
+	mi := &file_types_value_proto_msgTypes[5]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -235,7 +280,7 @@ func (x *Int64List) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Int64List.ProtoReflect.Descriptor instead.
 func (*Int64List) Descriptor() ([]byte, []int) {
-	return file_types_value_proto_rawDescGZIP(), []int{4}
+	return file_types_value_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *Int64List) GetValues() []int64 {
@@ -253,7 +298,7 @@ type Empty struct {
 
 func (x *Empty) Reset() {
 	*x = Empty{}
-	mi := &file_types_value_proto_msgTypes[5]
+	mi := &file_types_value_proto_msgTypes[6]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -265,7 +310,7 @@ func (x *Empty) String() string {
 func (*Empty) ProtoMessage() {}
 
 func (x *Empty) ProtoReflect() protoreflect.Message {
-	mi := &file_types_value_proto_msgTypes[5]
+	mi := &file_types_value_proto_msgTypes[6]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -278,30 +323,32 @@ func (x *Empty) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Empty.ProtoReflect.Descriptor instead.
 func (*Empty) Descriptor() ([]byte, []int) {
-	return file_types_value_proto_rawDescGZIP(), []int{5}
+	return file_types_value_proto_rawDescGZIP(), []int{6}
 }
 
 var File_types_value_proto protoreflect.FileDescriptor
 
 var file_types_value_proto_rawDesc = []byte{
 	0x0a, 0x11, 0x74, 0x79, 0x70, 0x65, 0x73, 0x2f, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x2e, 0x70, 0x72,
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-	0x6c, 0x75, 0x65, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x03, 0x52, 0x06, 0x76, 0x61, 0x6c, 0x75,
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+	0x22, 0x23, 0x0a, 0x09, 0x49, 0x6e, 0x74, 0x36, 0x34, 0x4c, 0x69, 0x73, 0x74, 0x12, 0x16, 0x0a,
+	0x06, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x03, 0x52, 0x06, 0x76,
+	0x61, 0x6c, 0x75, 0x65, 0x73, 0x22, 0x07, 0x0a, 0x05, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x42, 0x2f,
+	0x5a, 0x2d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x61, 0x72,
+	0x65, 0x74, 0x68, 0x67, 0x65, 0x6f, 0x72, 0x67, 0x65, 0x2f, 0x62, 0x61, 0x63, 0x6b, 0x72, 0x65,
+	0x73, 0x74, 0x2f, 0x67, 0x65, 0x6e, 0x2f, 0x67, 0x6f, 0x2f, 0x74, 0x79, 0x70, 0x65, 0x73, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -316,14 +363,15 @@ func file_types_value_proto_rawDescGZIP() []byte {
 	return file_types_value_proto_rawDescData
 }
 
-var file_types_value_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
+var file_types_value_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
 var file_types_value_proto_goTypes = []any{
-	(*StringValue)(nil), // 0: types.StringValue
-	(*BytesValue)(nil),  // 1: types.BytesValue
-	(*StringList)(nil),  // 2: types.StringList
-	(*Int64Value)(nil),  // 3: types.Int64Value
-	(*Int64List)(nil),   // 4: types.Int64List
-	(*Empty)(nil),       // 5: types.Empty
+	(*BoolValue)(nil),   // 0: types.BoolValue
+	(*StringValue)(nil), // 1: types.StringValue
+	(*BytesValue)(nil),  // 2: types.BytesValue
+	(*StringList)(nil),  // 3: types.StringList
+	(*Int64Value)(nil),  // 4: types.Int64Value
+	(*Int64List)(nil),   // 5: types.Int64List
+	(*Empty)(nil),       // 6: types.Empty
 }
 var file_types_value_proto_depIdxs = []int32{
 	0, // [0:0] is the sub-list for method output_type
@@ -344,7 +392,7 @@ func file_types_value_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_types_value_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   6,
+			NumMessages:   7,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/gen/go/v1/service.pb.go b/gen/go/v1/service.pb.go
index 1d5c8785..3087b82c 100644
--- a/gen/go/v1/service.pb.go
+++ b/gen/go/v1/service.pb.go
@@ -1272,78 +1272,82 @@ var file_v1_service_proto_rawDesc = []byte{
 	0x6f, 0x6e, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52, 0x06, 0x73, 0x74, 0x61, 0x74, 0x75, 0x73,
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+	0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x1c, 0x2e, 0x76, 0x31,
+	0x2e, 0x53, 0x75, 0x6d, 0x6d, 0x61, 0x72, 0x79, 0x44, 0x61, 0x73, 0x68, 0x62, 0x6f, 0x61, 0x72,
+	0x64, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x2c, 0x5a, 0x2a, 0x67,
+	0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x61, 0x72, 0x65, 0x74, 0x68,
+	0x67, 0x65, 0x6f, 0x72, 0x67, 0x65, 0x2f, 0x62, 0x61, 0x63, 0x6b, 0x72, 0x65, 0x73, 0x74, 0x2f,
+	0x67, 0x65, 0x6e, 0x2f, 0x67, 0x6f, 0x2f, 0x76, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
 }
 
 var (
@@ -1383,11 +1387,12 @@ var file_v1_service_proto_goTypes = []any{
 	(*Repo)(nil),                                 // 19: v1.Repo
 	(*types.StringValue)(nil),                    // 20: types.StringValue
 	(*types.Int64Value)(nil),                     // 21: types.Int64Value
-	(*OperationEvent)(nil),                       // 22: v1.OperationEvent
-	(*OperationList)(nil),                        // 23: v1.OperationList
-	(*ResticSnapshotList)(nil),                   // 24: v1.ResticSnapshotList
-	(*types.BytesValue)(nil),                     // 25: types.BytesValue
-	(*types.StringList)(nil),                     // 26: types.StringList
+	(*types.BoolValue)(nil),                      // 22: types.BoolValue
+	(*OperationEvent)(nil),                       // 23: v1.OperationEvent
+	(*OperationList)(nil),                        // 24: v1.OperationList
+	(*ResticSnapshotList)(nil),                   // 25: v1.ResticSnapshotList
+	(*types.BytesValue)(nil),                     // 26: types.BytesValue
+	(*types.StringList)(nil),                     // 27: types.StringList
 }
 var file_v1_service_proto_depIdxs = []int32{
 	0,  // 0: v1.DoRepoTaskRequest.task:type_name -> v1.DoRepoTaskRequest.Task
@@ -1400,42 +1405,44 @@ var file_v1_service_proto_depIdxs = []int32{
 	16, // 7: v1.SummaryDashboardResponse.BackupChart.status:type_name -> v1.OperationStatus
 	17, // 8: v1.Backrest.GetConfig:input_type -> google.protobuf.Empty
 	18, // 9: v1.Backrest.SetConfig:input_type -> v1.Config
-	19, // 10: v1.Backrest.AddRepo:input_type -> v1.Repo
-	17, // 11: v1.Backrest.GetOperationEvents:input_type -> google.protobuf.Empty
-	6,  // 12: v1.Backrest.GetOperations:input_type -> v1.GetOperationsRequest
-	5,  // 13: v1.Backrest.ListSnapshots:input_type -> v1.ListSnapshotsRequest
-	8,  // 14: v1.Backrest.ListSnapshotFiles:input_type -> v1.ListSnapshotFilesRequest
-	20, // 15: v1.Backrest.Backup:input_type -> types.StringValue
-	2,  // 16: v1.Backrest.DoRepoTask:input_type -> v1.DoRepoTaskRequest
-	4,  // 17: v1.Backrest.Forget:input_type -> v1.ForgetRequest
-	7,  // 18: v1.Backrest.Restore:input_type -> v1.RestoreSnapshotRequest
-	21, // 19: v1.Backrest.Cancel:input_type -> types.Int64Value
-	10, // 20: v1.Backrest.GetLogs:input_type -> v1.LogDataRequest
-	12, // 21: v1.Backrest.RunCommand:input_type -> v1.RunCommandRequest
-	21, // 22: v1.Backrest.GetDownloadURL:input_type -> types.Int64Value
-	3,  // 23: v1.Backrest.ClearHistory:input_type -> v1.ClearHistoryRequest
-	20, // 24: v1.Backrest.PathAutocomplete:input_type -> types.StringValue
-	17, // 25: v1.Backrest.GetSummaryDashboard:input_type -> google.protobuf.Empty
-	18, // 26: v1.Backrest.GetConfig:output_type -> v1.Config
-	18, // 27: v1.Backrest.SetConfig:output_type -> v1.Config
-	18, // 28: v1.Backrest.AddRepo:output_type -> v1.Config
-	22, // 29: v1.Backrest.GetOperationEvents:output_type -> v1.OperationEvent
-	23, // 30: v1.Backrest.GetOperations:output_type -> v1.OperationList
-	24, // 31: v1.Backrest.ListSnapshots:output_type -> v1.ResticSnapshotList
-	9,  // 32: v1.Backrest.ListSnapshotFiles:output_type -> v1.ListSnapshotFilesResponse
-	17, // 33: v1.Backrest.Backup:output_type -> google.protobuf.Empty
-	17, // 34: v1.Backrest.DoRepoTask:output_type -> google.protobuf.Empty
-	17, // 35: v1.Backrest.Forget:output_type -> google.protobuf.Empty
-	17, // 36: v1.Backrest.Restore:output_type -> google.protobuf.Empty
-	17, // 37: v1.Backrest.Cancel:output_type -> google.protobuf.Empty
-	25, // 38: v1.Backrest.GetLogs:output_type -> types.BytesValue
-	21, // 39: v1.Backrest.RunCommand:output_type -> types.Int64Value
-	20, // 40: v1.Backrest.GetDownloadURL:output_type -> types.StringValue
-	17, // 41: v1.Backrest.ClearHistory:output_type -> google.protobuf.Empty
-	26, // 42: v1.Backrest.PathAutocomplete:output_type -> types.StringList
-	13, // 43: v1.Backrest.GetSummaryDashboard:output_type -> v1.SummaryDashboardResponse
-	26, // [26:44] is the sub-list for method output_type
-	8,  // [8:26] is the sub-list for method input_type
+	19, // 10: v1.Backrest.CheckRepoExists:input_type -> v1.Repo
+	19, // 11: v1.Backrest.AddRepo:input_type -> v1.Repo
+	17, // 12: v1.Backrest.GetOperationEvents:input_type -> google.protobuf.Empty
+	6,  // 13: v1.Backrest.GetOperations:input_type -> v1.GetOperationsRequest
+	5,  // 14: v1.Backrest.ListSnapshots:input_type -> v1.ListSnapshotsRequest
+	8,  // 15: v1.Backrest.ListSnapshotFiles:input_type -> v1.ListSnapshotFilesRequest
+	20, // 16: v1.Backrest.Backup:input_type -> types.StringValue
+	2,  // 17: v1.Backrest.DoRepoTask:input_type -> v1.DoRepoTaskRequest
+	4,  // 18: v1.Backrest.Forget:input_type -> v1.ForgetRequest
+	7,  // 19: v1.Backrest.Restore:input_type -> v1.RestoreSnapshotRequest
+	21, // 20: v1.Backrest.Cancel:input_type -> types.Int64Value
+	10, // 21: v1.Backrest.GetLogs:input_type -> v1.LogDataRequest
+	12, // 22: v1.Backrest.RunCommand:input_type -> v1.RunCommandRequest
+	21, // 23: v1.Backrest.GetDownloadURL:input_type -> types.Int64Value
+	3,  // 24: v1.Backrest.ClearHistory:input_type -> v1.ClearHistoryRequest
+	20, // 25: v1.Backrest.PathAutocomplete:input_type -> types.StringValue
+	17, // 26: v1.Backrest.GetSummaryDashboard:input_type -> google.protobuf.Empty
+	18, // 27: v1.Backrest.GetConfig:output_type -> v1.Config
+	18, // 28: v1.Backrest.SetConfig:output_type -> v1.Config
+	22, // 29: v1.Backrest.CheckRepoExists:output_type -> types.BoolValue
+	18, // 30: v1.Backrest.AddRepo:output_type -> v1.Config
+	23, // 31: v1.Backrest.GetOperationEvents:output_type -> v1.OperationEvent
+	24, // 32: v1.Backrest.GetOperations:output_type -> v1.OperationList
+	25, // 33: v1.Backrest.ListSnapshots:output_type -> v1.ResticSnapshotList
+	9,  // 34: v1.Backrest.ListSnapshotFiles:output_type -> v1.ListSnapshotFilesResponse
+	17, // 35: v1.Backrest.Backup:output_type -> google.protobuf.Empty
+	17, // 36: v1.Backrest.DoRepoTask:output_type -> google.protobuf.Empty
+	17, // 37: v1.Backrest.Forget:output_type -> google.protobuf.Empty
+	17, // 38: v1.Backrest.Restore:output_type -> google.protobuf.Empty
+	17, // 39: v1.Backrest.Cancel:output_type -> google.protobuf.Empty
+	26, // 40: v1.Backrest.GetLogs:output_type -> types.BytesValue
+	21, // 41: v1.Backrest.RunCommand:output_type -> types.Int64Value
+	20, // 42: v1.Backrest.GetDownloadURL:output_type -> types.StringValue
+	17, // 43: v1.Backrest.ClearHistory:output_type -> google.protobuf.Empty
+	27, // 44: v1.Backrest.PathAutocomplete:output_type -> types.StringList
+	13, // 45: v1.Backrest.GetSummaryDashboard:output_type -> v1.SummaryDashboardResponse
+	27, // [27:46] is the sub-list for method output_type
+	8,  // [8:27] 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
diff --git a/gen/go/v1/service_grpc.pb.go b/gen/go/v1/service_grpc.pb.go
index 9a20f8be..0ba82400 100644
--- a/gen/go/v1/service_grpc.pb.go
+++ b/gen/go/v1/service_grpc.pb.go
@@ -23,6 +23,7 @@ const _ = grpc.SupportPackageIsVersion9
 const (
 	Backrest_GetConfig_FullMethodName           = "/v1.Backrest/GetConfig"
 	Backrest_SetConfig_FullMethodName           = "/v1.Backrest/SetConfig"
+	Backrest_CheckRepoExists_FullMethodName     = "/v1.Backrest/CheckRepoExists"
 	Backrest_AddRepo_FullMethodName             = "/v1.Backrest/AddRepo"
 	Backrest_GetOperationEvents_FullMethodName  = "/v1.Backrest/GetOperationEvents"
 	Backrest_GetOperations_FullMethodName       = "/v1.Backrest/GetOperations"
@@ -47,6 +48,7 @@ const (
 type BackrestClient interface {
 	GetConfig(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*Config, error)
 	SetConfig(ctx context.Context, in *Config, opts ...grpc.CallOption) (*Config, error)
+	CheckRepoExists(ctx context.Context, in *Repo, opts ...grpc.CallOption) (*types.BoolValue, error)
 	AddRepo(ctx context.Context, in *Repo, opts ...grpc.CallOption) (*Config, error)
 	GetOperationEvents(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (grpc.ServerStreamingClient[OperationEvent], error)
 	GetOperations(ctx context.Context, in *GetOperationsRequest, opts ...grpc.CallOption) (*OperationList, error)
@@ -104,6 +106,16 @@ func (c *backrestClient) SetConfig(ctx context.Context, in *Config, opts ...grpc
 	return out, nil
 }
 
+func (c *backrestClient) CheckRepoExists(ctx context.Context, in *Repo, opts ...grpc.CallOption) (*types.BoolValue, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(types.BoolValue)
+	err := c.cc.Invoke(ctx, Backrest_CheckRepoExists_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *backrestClient) AddRepo(ctx context.Context, in *Repo, opts ...grpc.CallOption) (*Config, error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(Config)
@@ -288,6 +300,7 @@ func (c *backrestClient) GetSummaryDashboard(ctx context.Context, in *emptypb.Em
 type BackrestServer interface {
 	GetConfig(context.Context, *emptypb.Empty) (*Config, error)
 	SetConfig(context.Context, *Config) (*Config, error)
+	CheckRepoExists(context.Context, *Repo) (*types.BoolValue, error)
 	AddRepo(context.Context, *Repo) (*Config, error)
 	GetOperationEvents(*emptypb.Empty, grpc.ServerStreamingServer[OperationEvent]) error
 	GetOperations(context.Context, *GetOperationsRequest) (*OperationList, error)
@@ -331,6 +344,9 @@ func (UnimplementedBackrestServer) GetConfig(context.Context, *emptypb.Empty) (*
 func (UnimplementedBackrestServer) SetConfig(context.Context, *Config) (*Config, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method SetConfig not implemented")
 }
+func (UnimplementedBackrestServer) CheckRepoExists(context.Context, *Repo) (*types.BoolValue, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method CheckRepoExists not implemented")
+}
 func (UnimplementedBackrestServer) AddRepo(context.Context, *Repo) (*Config, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AddRepo not implemented")
 }
@@ -436,6 +452,24 @@ func _Backrest_SetConfig_Handler(srv interface{}, ctx context.Context, dec func(
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Backrest_CheckRepoExists_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(Repo)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(BackrestServer).CheckRepoExists(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Backrest_CheckRepoExists_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(BackrestServer).CheckRepoExists(ctx, req.(*Repo))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Backrest_AddRepo_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(Repo)
 	if err := dec(in); err != nil {
@@ -725,6 +759,10 @@ var Backrest_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "SetConfig",
 			Handler:    _Backrest_SetConfig_Handler,
 		},
+		{
+			MethodName: "CheckRepoExists",
+			Handler:    _Backrest_CheckRepoExists_Handler,
+		},
 		{
 			MethodName: "AddRepo",
 			Handler:    _Backrest_AddRepo_Handler,
diff --git a/gen/go/v1/v1connect/service.connect.go b/gen/go/v1/v1connect/service.connect.go
index c2320107..00115acb 100644
--- a/gen/go/v1/v1connect/service.connect.go
+++ b/gen/go/v1/v1connect/service.connect.go
@@ -39,6 +39,9 @@ const (
 	BackrestGetConfigProcedure = "/v1.Backrest/GetConfig"
 	// BackrestSetConfigProcedure is the fully-qualified name of the Backrest's SetConfig RPC.
 	BackrestSetConfigProcedure = "/v1.Backrest/SetConfig"
+	// BackrestCheckRepoExistsProcedure is the fully-qualified name of the Backrest's CheckRepoExists
+	// RPC.
+	BackrestCheckRepoExistsProcedure = "/v1.Backrest/CheckRepoExists"
 	// BackrestAddRepoProcedure is the fully-qualified name of the Backrest's AddRepo RPC.
 	BackrestAddRepoProcedure = "/v1.Backrest/AddRepo"
 	// BackrestGetOperationEventsProcedure is the fully-qualified name of the Backrest's
@@ -82,6 +85,7 @@ var (
 	backrestServiceDescriptor                   = v1.File_v1_service_proto.Services().ByName("Backrest")
 	backrestGetConfigMethodDescriptor           = backrestServiceDescriptor.Methods().ByName("GetConfig")
 	backrestSetConfigMethodDescriptor           = backrestServiceDescriptor.Methods().ByName("SetConfig")
+	backrestCheckRepoExistsMethodDescriptor     = backrestServiceDescriptor.Methods().ByName("CheckRepoExists")
 	backrestAddRepoMethodDescriptor             = backrestServiceDescriptor.Methods().ByName("AddRepo")
 	backrestGetOperationEventsMethodDescriptor  = backrestServiceDescriptor.Methods().ByName("GetOperationEvents")
 	backrestGetOperationsMethodDescriptor       = backrestServiceDescriptor.Methods().ByName("GetOperations")
@@ -104,6 +108,7 @@ var (
 type BackrestClient interface {
 	GetConfig(context.Context, *connect.Request[emptypb.Empty]) (*connect.Response[v1.Config], error)
 	SetConfig(context.Context, *connect.Request[v1.Config]) (*connect.Response[v1.Config], error)
+	CheckRepoExists(context.Context, *connect.Request[v1.Repo]) (*connect.Response[types.BoolValue], error)
 	AddRepo(context.Context, *connect.Request[v1.Repo]) (*connect.Response[v1.Config], error)
 	GetOperationEvents(context.Context, *connect.Request[emptypb.Empty]) (*connect.ServerStreamForClient[v1.OperationEvent], error)
 	GetOperations(context.Context, *connect.Request[v1.GetOperationsRequest]) (*connect.Response[v1.OperationList], error)
@@ -155,6 +160,12 @@ func NewBackrestClient(httpClient connect.HTTPClient, baseURL string, opts ...co
 			connect.WithSchema(backrestSetConfigMethodDescriptor),
 			connect.WithClientOptions(opts...),
 		),
+		checkRepoExists: connect.NewClient[v1.Repo, types.BoolValue](
+			httpClient,
+			baseURL+BackrestCheckRepoExistsProcedure,
+			connect.WithSchema(backrestCheckRepoExistsMethodDescriptor),
+			connect.WithClientOptions(opts...),
+		),
 		addRepo: connect.NewClient[v1.Repo, v1.Config](
 			httpClient,
 			baseURL+BackrestAddRepoProcedure,
@@ -258,6 +269,7 @@ func NewBackrestClient(httpClient connect.HTTPClient, baseURL string, opts ...co
 type backrestClient struct {
 	getConfig           *connect.Client[emptypb.Empty, v1.Config]
 	setConfig           *connect.Client[v1.Config, v1.Config]
+	checkRepoExists     *connect.Client[v1.Repo, types.BoolValue]
 	addRepo             *connect.Client[v1.Repo, v1.Config]
 	getOperationEvents  *connect.Client[emptypb.Empty, v1.OperationEvent]
 	getOperations       *connect.Client[v1.GetOperationsRequest, v1.OperationList]
@@ -286,6 +298,11 @@ func (c *backrestClient) SetConfig(ctx context.Context, req *connect.Request[v1.
 	return c.setConfig.CallUnary(ctx, req)
 }
 
+// CheckRepoExists calls v1.Backrest.CheckRepoExists.
+func (c *backrestClient) CheckRepoExists(ctx context.Context, req *connect.Request[v1.Repo]) (*connect.Response[types.BoolValue], error) {
+	return c.checkRepoExists.CallUnary(ctx, req)
+}
+
 // AddRepo calls v1.Backrest.AddRepo.
 func (c *backrestClient) AddRepo(ctx context.Context, req *connect.Request[v1.Repo]) (*connect.Response[v1.Config], error) {
 	return c.addRepo.CallUnary(ctx, req)
@@ -370,6 +387,7 @@ func (c *backrestClient) GetSummaryDashboard(ctx context.Context, req *connect.R
 type BackrestHandler interface {
 	GetConfig(context.Context, *connect.Request[emptypb.Empty]) (*connect.Response[v1.Config], error)
 	SetConfig(context.Context, *connect.Request[v1.Config]) (*connect.Response[v1.Config], error)
+	CheckRepoExists(context.Context, *connect.Request[v1.Repo]) (*connect.Response[types.BoolValue], error)
 	AddRepo(context.Context, *connect.Request[v1.Repo]) (*connect.Response[v1.Config], error)
 	GetOperationEvents(context.Context, *connect.Request[emptypb.Empty], *connect.ServerStream[v1.OperationEvent]) error
 	GetOperations(context.Context, *connect.Request[v1.GetOperationsRequest]) (*connect.Response[v1.OperationList], error)
@@ -417,6 +435,12 @@ func NewBackrestHandler(svc BackrestHandler, opts ...connect.HandlerOption) (str
 		connect.WithSchema(backrestSetConfigMethodDescriptor),
 		connect.WithHandlerOptions(opts...),
 	)
+	backrestCheckRepoExistsHandler := connect.NewUnaryHandler(
+		BackrestCheckRepoExistsProcedure,
+		svc.CheckRepoExists,
+		connect.WithSchema(backrestCheckRepoExistsMethodDescriptor),
+		connect.WithHandlerOptions(opts...),
+	)
 	backrestAddRepoHandler := connect.NewUnaryHandler(
 		BackrestAddRepoProcedure,
 		svc.AddRepo,
@@ -519,6 +543,8 @@ func NewBackrestHandler(svc BackrestHandler, opts ...connect.HandlerOption) (str
 			backrestGetConfigHandler.ServeHTTP(w, r)
 		case BackrestSetConfigProcedure:
 			backrestSetConfigHandler.ServeHTTP(w, r)
+		case BackrestCheckRepoExistsProcedure:
+			backrestCheckRepoExistsHandler.ServeHTTP(w, r)
 		case BackrestAddRepoProcedure:
 			backrestAddRepoHandler.ServeHTTP(w, r)
 		case BackrestGetOperationEventsProcedure:
@@ -568,6 +594,10 @@ func (UnimplementedBackrestHandler) SetConfig(context.Context, *connect.Request[
 	return nil, connect.NewError(connect.CodeUnimplemented, errors.New("v1.Backrest.SetConfig is not implemented"))
 }
 
+func (UnimplementedBackrestHandler) CheckRepoExists(context.Context, *connect.Request[v1.Repo]) (*connect.Response[types.BoolValue], error) {
+	return nil, connect.NewError(connect.CodeUnimplemented, errors.New("v1.Backrest.CheckRepoExists is not implemented"))
+}
+
 func (UnimplementedBackrestHandler) AddRepo(context.Context, *connect.Request[v1.Repo]) (*connect.Response[v1.Config], error) {
 	return nil, connect.NewError(connect.CodeUnimplemented, errors.New("v1.Backrest.AddRepo is not implemented"))
 }
diff --git a/internal/api/backresthandler.go b/internal/api/backresthandler.go
index a578ac38..4e5ab870 100644
--- a/internal/api/backresthandler.go
+++ b/internal/api/backresthandler.go
@@ -11,6 +11,7 @@ import (
 	"path"
 	"reflect"
 	"slices"
+	"strings"
 	"sync"
 	"time"
 
@@ -95,6 +96,45 @@ func (s *BackrestHandler) SetConfig(ctx context.Context, req *connect.Request[v1
 	return connect.NewResponse(newConfig), nil
 }
 
+func (s *BackrestHandler) CheckRepoExists(ctx context.Context, req *connect.Request[v1.Repo]) (*connect.Response[types.BoolValue], error) {
+	c, err := s.config.Get()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get config: %w", err)
+	}
+
+	c = proto.Clone(c).(*v1.Config)
+	if idx := slices.IndexFunc(c.Repos, func(r *v1.Repo) bool { return r.Id == req.Msg.Id }); idx != -1 {
+		c.Repos[idx] = req.Msg
+	} else {
+		c.Repos = append(c.Repos, req.Msg)
+	}
+
+	if err := config.ValidateConfig(c); err != nil {
+		return nil, fmt.Errorf("validation error: %w", err)
+	}
+
+	bin, err := resticinstaller.FindOrInstallResticBinary()
+	if err != nil {
+		return nil, fmt.Errorf("failed to find or install restic binary: %w", err)
+	}
+
+	r, err := repo.NewRepoOrchestrator(c, req.Msg, bin)
+	if err != nil {
+		return nil, fmt.Errorf("failed to configure repo: %w", err)
+	}
+
+	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
+	defer cancel()
+
+	if err := r.Exists(ctx); err != nil {
+		if strings.Contains(err.Error(), "repository does not exist") {
+			return connect.NewResponse(&types.BoolValue{Value: false}), nil
+		}
+		return nil, err
+	}
+	return connect.NewResponse(&types.BoolValue{Value: true}), nil
+}
+
 // AddRepo implements POST /v1/config/repo, it includes validation that the repo can be initialized.
 func (s *BackrestHandler) AddRepo(ctx context.Context, req *connect.Request[v1.Repo]) (*connect.Response[v1.Config], error) {
 	c, err := s.config.Get()
diff --git a/internal/orchestrator/repo/repo.go b/internal/orchestrator/repo/repo.go
index be085299..dbca9d50 100644
--- a/internal/orchestrator/repo/repo.go
+++ b/internal/orchestrator/repo/repo.go
@@ -85,6 +85,10 @@ func (r *RepoOrchestrator) logger(ctx context.Context) *zap.Logger {
 	return logging.Logger(ctx, "[repo-manager] ").With(zap.String("repo", r.repoConfig.Id))
 }
 
+func (r *RepoOrchestrator) Exists(ctx context.Context) error {
+	return r.repo.Exists(ctx)
+}
+
 func (r *RepoOrchestrator) Init(ctx context.Context) error {
 	ctx, flush := forwardResticLogs(ctx)
 	defer flush()
diff --git a/proto/types/value.proto b/proto/types/value.proto
index 977137cb..b5c15bb0 100644
--- a/proto/types/value.proto
+++ b/proto/types/value.proto
@@ -4,6 +4,10 @@ package types;
 
 option go_package = "github.com/garethgeorge/backrest/gen/go/types";
 
+message BoolValue {
+  bool value = 1;
+}
+
 message StringValue {
   string value = 1;
 }
diff --git a/proto/v1/service.proto b/proto/v1/service.proto
index 2a47bccb..f2063f38 100644
--- a/proto/v1/service.proto
+++ b/proto/v1/service.proto
@@ -16,6 +16,8 @@ service Backrest {
 
   rpc SetConfig (Config) returns (Config) {}
 
+  rpc CheckRepoExists (Repo) returns (types.BoolValue) {} // returns an error if the repo does not exist
+
   rpc AddRepo (Repo) returns (Config) {}
 
   rpc GetOperationEvents (google.protobuf.Empty) returns (stream OperationEvent) {}
diff --git a/webui/gen/ts/types/value_pb.ts b/webui/gen/ts/types/value_pb.ts
index 544ac45c..2187a785 100644
--- a/webui/gen/ts/types/value_pb.ts
+++ b/webui/gen/ts/types/value_pb.ts
@@ -10,7 +10,24 @@ import type { Message } from "@bufbuild/protobuf";
  * Describes the file types/value.proto.
  */
 export const file_types_value: GenFile = /*@__PURE__*/
-  fileDesc("ChF0eXBlcy92YWx1ZS5wcm90bxIFdHlwZXMiHAoLU3RyaW5nVmFsdWUSDQoFdmFsdWUYASABKAkiGwoKQnl0ZXNWYWx1ZRINCgV2YWx1ZRgBIAEoDCIcCgpTdHJpbmdMaXN0Eg4KBnZhbHVlcxgBIAMoCSIbCgpJbnQ2NFZhbHVlEg0KBXZhbHVlGAEgASgDIhsKCUludDY0TGlzdBIOCgZ2YWx1ZXMYASADKAMiBwoFRW1wdHlCL1otZ2l0aHViLmNvbS9nYXJldGhnZW9yZ2UvYmFja3Jlc3QvZ2VuL2dvL3R5cGVzYgZwcm90bzM");
+  fileDesc("ChF0eXBlcy92YWx1ZS5wcm90bxIFdHlwZXMiGgoJQm9vbFZhbHVlEg0KBXZhbHVlGAEgASgIIhwKC1N0cmluZ1ZhbHVlEg0KBXZhbHVlGAEgASgJIhsKCkJ5dGVzVmFsdWUSDQoFdmFsdWUYASABKAwiHAoKU3RyaW5nTGlzdBIOCgZ2YWx1ZXMYASADKAkiGwoKSW50NjRWYWx1ZRINCgV2YWx1ZRgBIAEoAyIbCglJbnQ2NExpc3QSDgoGdmFsdWVzGAEgAygDIgcKBUVtcHR5Qi9aLWdpdGh1Yi5jb20vZ2FyZXRoZ2VvcmdlL2JhY2tyZXN0L2dlbi9nby90eXBlc2IGcHJvdG8z");
+
+/**
+ * @generated from message types.BoolValue
+ */
+export type BoolValue = Message<"types.BoolValue"> & {
+  /**
+   * @generated from field: bool value = 1;
+   */
+  value: boolean;
+};
+
+/**
+ * Describes the message types.BoolValue.
+ * Use `create(BoolValueSchema)` to create a new message.
+ */
+export const BoolValueSchema: GenMessage<BoolValue> = /*@__PURE__*/
+  messageDesc(file_types_value, 0);
 
 /**
  * @generated from message types.StringValue
@@ -27,7 +44,7 @@ export type StringValue = Message<"types.StringValue"> & {
  * Use `create(StringValueSchema)` to create a new message.
  */
 export const StringValueSchema: GenMessage<StringValue> = /*@__PURE__*/
-  messageDesc(file_types_value, 0);
+  messageDesc(file_types_value, 1);
 
 /**
  * @generated from message types.BytesValue
@@ -44,7 +61,7 @@ export type BytesValue = Message<"types.BytesValue"> & {
  * Use `create(BytesValueSchema)` to create a new message.
  */
 export const BytesValueSchema: GenMessage<BytesValue> = /*@__PURE__*/
-  messageDesc(file_types_value, 1);
+  messageDesc(file_types_value, 2);
 
 /**
  * @generated from message types.StringList
@@ -61,7 +78,7 @@ export type StringList = Message<"types.StringList"> & {
  * Use `create(StringListSchema)` to create a new message.
  */
 export const StringListSchema: GenMessage<StringList> = /*@__PURE__*/
-  messageDesc(file_types_value, 2);
+  messageDesc(file_types_value, 3);
 
 /**
  * @generated from message types.Int64Value
@@ -78,7 +95,7 @@ export type Int64Value = Message<"types.Int64Value"> & {
  * Use `create(Int64ValueSchema)` to create a new message.
  */
 export const Int64ValueSchema: GenMessage<Int64Value> = /*@__PURE__*/
-  messageDesc(file_types_value, 3);
+  messageDesc(file_types_value, 4);
 
 /**
  * @generated from message types.Int64List
@@ -95,7 +112,7 @@ export type Int64List = Message<"types.Int64List"> & {
  * Use `create(Int64ListSchema)` to create a new message.
  */
 export const Int64ListSchema: GenMessage<Int64List> = /*@__PURE__*/
-  messageDesc(file_types_value, 4);
+  messageDesc(file_types_value, 5);
 
 /**
  * @generated from message types.Empty
@@ -108,5 +125,5 @@ export type Empty = Message<"types.Empty"> & {
  * Use `create(EmptySchema)` to create a new message.
  */
 export const EmptySchema: GenMessage<Empty> = /*@__PURE__*/
-  messageDesc(file_types_value, 5);
+  messageDesc(file_types_value, 6);
 
diff --git a/webui/gen/ts/v1/service_pb.ts b/webui/gen/ts/v1/service_pb.ts
index e2a2a546..33f15191 100644
--- a/webui/gen/ts/v1/service_pb.ts
+++ b/webui/gen/ts/v1/service_pb.ts
@@ -10,7 +10,7 @@ import type { ResticSnapshotListSchema } from "./restic_pb";
 import { file_v1_restic } from "./restic_pb";
 import type { OperationEventSchema, OperationListSchema, OperationStatus } from "./operations_pb";
 import { file_v1_operations } from "./operations_pb";
-import type { BytesValueSchema, Int64ValueSchema, StringListSchema, StringValueSchema } from "../types/value_pb";
+import type { BoolValueSchema, BytesValueSchema, Int64ValueSchema, StringListSchema, StringValueSchema } from "../types/value_pb";
 import { file_types_value } from "../types/value_pb";
 import type { EmptySchema } from "@bufbuild/protobuf/wkt";
 import { file_google_protobuf_empty } from "@bufbuild/protobuf/wkt";
@@ -21,7 +21,7 @@ import type { Message } from "@bufbuild/protobuf";
  * Describes the file v1/service.proto.
  */
 export const file_v1_service: GenFile = /*@__PURE__*/
-  fileDesc("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", [file_v1_config, file_v1_restic, file_v1_operations, file_types_value, file_google_protobuf_empty, file_google_api_annotations]);
+  fileDesc("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", [file_v1_config, file_v1_restic, file_v1_operations, file_types_value, file_google_protobuf_empty, file_google_api_annotations]);
 
 /**
  * OpSelector is a message that can be used to select operations e.g. by query.
@@ -567,6 +567,14 @@ export const Backrest: GenService<{
     input: typeof ConfigSchema;
     output: typeof ConfigSchema;
   },
+  /**
+   * @generated from rpc v1.Backrest.CheckRepoExists
+   */
+  checkRepoExists: {
+    methodKind: "unary";
+    input: typeof RepoSchema;
+    output: typeof BoolValueSchema;
+  },
   /**
    * @generated from rpc v1.Backrest.AddRepo
    */
diff --git a/webui/src/lib/formutil.ts b/webui/src/lib/formutil.ts
index 704e86da..860e4dfa 100644
--- a/webui/src/lib/formutil.ts
+++ b/webui/src/lib/formutil.ts
@@ -3,7 +3,7 @@ import { FormInstance } from "antd";
 export const validateForm = async <T>(form: FormInstance<T>) => {
   try {
     await form.validateFields();
-    return form.getFieldsValue();
+    return sanitizeUndefinedFields(form.getFieldsValue());
   } catch (e: any) {
     if (e.errorFields) {
       const firstError = (e as any).errorFields?.[0]
@@ -14,6 +14,22 @@ export const validateForm = async <T>(form: FormInstance<T>) => {
   }
 };
 
+const sanitizeUndefinedFields = <T>(obj: T): T => {
+  if (typeof obj !== "object" || obj === null) {
+    return obj;
+  } else if (Array.isArray(obj)) {
+    return obj.map(sanitizeUndefinedFields) as any;
+  }
+
+  const newObj: any = {};
+  for (const key in obj) {
+    if (obj[key] !== undefined) {
+      newObj[key] = sanitizeUndefinedFields(obj[key]);
+    }
+  }
+  return newObj;
+}
+
 // regex allows alphanumeric, underscore, dash, and dot
 // this should be kept in sync with values permitted by SanitizeID on the backend
 export const namePattern = /^[a-zA-Z0-9_\-\.]+$/;
diff --git a/webui/src/views/AddRepoModal.tsx b/webui/src/views/AddRepoModal.tsx
index 1cfb7198..a52e915e 100644
--- a/webui/src/views/AddRepoModal.tsx
+++ b/webui/src/views/AddRepoModal.tsx
@@ -33,9 +33,8 @@ import { backrestService } from "../api";
 import {
   HooksFormList,
   hooksListTooltipText,
-  HookFormData,
 } from "../components/HooksFormList";
-import { ConfirmButton } from "../components/SpinButton";
+import { ConfirmButton, SpinButton } from "../components/SpinButton";
 import { useConfig } from "../components/ConfigProvider";
 import Cron from "react-js-cron";
 import {
@@ -43,7 +42,7 @@ import {
   ScheduleFormItem,
 } from "../components/ScheduleFormItem";
 import { isWindows } from "../state/buildcfg";
-import { create, fromJson, toJson } from "@bufbuild/protobuf";
+import { create, fromJson, JsonValue, toJson } from "@bufbuild/protobuf";
 
 const repoDefaults = create(RepoSchema, {
   prunePolicy: {
@@ -72,15 +71,14 @@ export const AddRepoModal = ({ template }: { template: Repo | null }) => {
   const showModal = useShowModal();
   const alertsApi = useAlertApi()!;
   const [config, setConfig] = useConfig();
-  const [form] = Form.useForm();
+  const [form] = Form.useForm<JsonValue>();
   useEffect(() => {
-    form.setFieldsValue(
-      template
-        ? toJson(RepoSchema, template, {
-            alwaysEmitImplicit: true,
-          })
-        : toJson(RepoSchema, repoDefaults, { alwaysEmitImplicit: true })
-    );
+    const initVal = template
+      ? toJson(RepoSchema, template, {
+          alwaysEmitImplicit: true,
+        })
+      : toJson(RepoSchema, repoDefaults, { alwaysEmitImplicit: true });
+    form.setFieldsValue(initVal);
   }, [template]);
 
   if (!config) {
@@ -195,6 +193,38 @@ export const AddRepoModal = ({ template }: { template: Repo | null }) => {
               Delete
             </ConfirmButton>
           ) : null,
+          <SpinButton
+            key="check"
+            onClickAsync={async () => {
+              let repoFormData = await validateForm(form);
+              console.log("checking repo", repoFormData);
+              const repo = fromJson(RepoSchema, repoFormData, {
+                ignoreUnknownFields: false,
+              });
+              try {
+                const exists = await backrestService.checkRepoExists(repo);
+                if (exists) {
+                  alertsApi.success(
+                    "Connected successfully to " +
+                      repo.uri +
+                      " and found an existing repo.",
+                    10
+                  );
+                } else {
+                  alertsApi.success(
+                    "Connected successfully to " +
+                      repo.uri +
+                      ". No existing repo found at this location, a new one will be initialized",
+                    10
+                  );
+                }
+              } catch (e: any) {
+                alertsApi.error(formatErrorAlert(e, "Check error: "), 10);
+              }
+            }}
+          >
+            Test Configuration
+          </SpinButton>,
           <Button
             key="submit"
             type="primary"