diff --git a/client/lib/protobuf/google/protobuf/timestamp.pb.dart b/client/lib/protobuf/google/protobuf/timestamp.pb.dart
deleted file mode 100644
index 4cbf12f..0000000
--- a/client/lib/protobuf/google/protobuf/timestamp.pb.dart
+++ /dev/null
@@ -1,74 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: timestamp.proto
-///
-// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name
-
-import 'dart:core' as $core
-    show bool, Deprecated, double, int, List, Map, override, pragma, String;
-
-import 'package:fixnum/fixnum.dart';
-import 'package:protobuf/protobuf.dart' as $pb;
-
-import 'dart:core' as $core show DateTime, Duration;
-
-class Timestamp extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('Timestamp',
-      package: const $pb.PackageName('google.protobuf'))
-    ..aInt64(1, 'seconds')
-    ..a<$core.int>(2, 'nanos', $pb.PbFieldType.O3)
-    ..hasRequiredFields = false;
-
-  Timestamp._() : super();
-  factory Timestamp() => create();
-  factory Timestamp.fromBuffer($core.List<$core.int> i,
-          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
-      create()..mergeFromBuffer(i, r);
-  factory Timestamp.fromJson($core.String i,
-          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
-      create()..mergeFromJson(i, r);
-  Timestamp clone() => Timestamp()..mergeFromMessage(this);
-  Timestamp copyWith(void Function(Timestamp) updates) =>
-      super.copyWith((message) => updates(message as Timestamp));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static Timestamp create() => Timestamp._();
-  Timestamp createEmptyInstance() => create();
-  static $pb.PbList<Timestamp> createRepeated() => $pb.PbList<Timestamp>();
-  static Timestamp getDefault() => _defaultInstance ??= create()..freeze();
-  static Timestamp _defaultInstance;
-
-  Int64 get seconds => $_getI64(0);
-  set seconds(Int64 v) {
-    $_setInt64(0, v);
-  }
-
-  $core.bool hasSeconds() => $_has(0);
-  void clearSeconds() => clearField(1);
-
-  $core.int get nanos => $_get(1, 0);
-  set nanos($core.int v) {
-    $_setSignedInt32(1, v);
-  }
-
-  $core.bool hasNanos() => $_has(1);
-  void clearNanos() => clearField(2);
-
-  /// Converts an instance to [DateTime].
-  ///
-  /// The result is in UTC time zone and has microsecond precision, as
-  /// [DateTime] does not support nanosecond precision.
-  $core.DateTime toDateTime() => $core.DateTime.fromMicrosecondsSinceEpoch(
-      seconds.toInt() * $core.Duration.microsecondsPerSecond + nanos ~/ 1000,
-      isUtc: true);
-
-  /// Creates a new instance from [dateTime].
-  ///
-  /// Time zone information will not be preserved.
-  static Timestamp fromDateTime($core.DateTime dateTime) {
-    $core.int micros = dateTime.microsecondsSinceEpoch;
-    return Timestamp()
-      ..seconds = Int64(micros ~/ $core.Duration.microsecondsPerSecond)
-      ..nanos = (micros % $core.Duration.microsecondsPerSecond).toInt() * 1000;
-  }
-}
diff --git a/client/lib/protobuf/google/protobuf/timestamp.pbenum.dart b/client/lib/protobuf/google/protobuf/timestamp.pbenum.dart
deleted file mode 100644
index fd4e632..0000000
--- a/client/lib/protobuf/google/protobuf/timestamp.pbenum.dart
+++ /dev/null
@@ -1,6 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: timestamp.proto
-///
-// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name
-
diff --git a/client/lib/protobuf/google/protobuf/timestamp.pbjson.dart b/client/lib/protobuf/google/protobuf/timestamp.pbjson.dart
deleted file mode 100644
index a072d7e..0000000
--- a/client/lib/protobuf/google/protobuf/timestamp.pbjson.dart
+++ /dev/null
@@ -1,13 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: timestamp.proto
-///
-// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name
-
-const Timestamp$json = const {
-  '1': 'Timestamp',
-  '2': const [
-    const {'1': 'seconds', '3': 1, '4': 1, '5': 3, '10': 'seconds'},
-    const {'1': 'nanos', '3': 2, '4': 1, '5': 5, '10': 'nanos'},
-  ],
-};
diff --git a/client/lib/protobuf/service.pb.dart b/client/lib/protobuf/service.pb.dart
deleted file mode 100644
index 6fcd5a1..0000000
--- a/client/lib/protobuf/service.pb.dart
+++ /dev/null
@@ -1,384 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: service.proto
-///
-// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name
-
-import 'dart:core' as $core show bool, Deprecated, double, int, List, Map, override, pragma, String;
-
-import 'package:protobuf/protobuf.dart' as $pb;
-
-import 'google/protobuf/timestamp.pb.dart' as $1;
-
-class DeleteResponse extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('DeleteResponse', package: const $pb.PackageName('selfpass.credentials'))
-    ..aOB(1, 'success')
-    ..hasRequiredFields = false
-  ;
-
-  DeleteResponse._() : super();
-  factory DeleteResponse() => create();
-  factory DeleteResponse.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory DeleteResponse.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  DeleteResponse clone() => DeleteResponse()..mergeFromMessage(this);
-  DeleteResponse copyWith(void Function(DeleteResponse) updates) => super.copyWith((message) => updates(message as DeleteResponse));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static DeleteResponse create() => DeleteResponse._();
-  DeleteResponse createEmptyInstance() => create();
-  static $pb.PbList<DeleteResponse> createRepeated() => $pb.PbList<DeleteResponse>();
-  static DeleteResponse getDefault() => _defaultInstance ??= create()..freeze();
-  static DeleteResponse _defaultInstance;
-
-  $core.bool get success => $_get(0, false);
-  set success($core.bool v) { $_setBool(0, v); }
-  $core.bool hasSuccess() => $_has(0);
-  void clearSuccess() => clearField(1);
-}
-
-class GetAllMetadataRequest extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('GetAllMetadataRequest', package: const $pb.PackageName('selfpass.credentials'))
-    ..aOS(1, 'sourceHost')
-    ..hasRequiredFields = false
-  ;
-
-  GetAllMetadataRequest._() : super();
-  factory GetAllMetadataRequest() => create();
-  factory GetAllMetadataRequest.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory GetAllMetadataRequest.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  GetAllMetadataRequest clone() => GetAllMetadataRequest()..mergeFromMessage(this);
-  GetAllMetadataRequest copyWith(void Function(GetAllMetadataRequest) updates) => super.copyWith((message) => updates(message as GetAllMetadataRequest));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static GetAllMetadataRequest create() => GetAllMetadataRequest._();
-  GetAllMetadataRequest createEmptyInstance() => create();
-  static $pb.PbList<GetAllMetadataRequest> createRepeated() => $pb.PbList<GetAllMetadataRequest>();
-  static GetAllMetadataRequest getDefault() => _defaultInstance ??= create()..freeze();
-  static GetAllMetadataRequest _defaultInstance;
-
-  $core.String get sourceHost => $_getS(0, '');
-  set sourceHost($core.String v) { $_setString(0, v); }
-  $core.bool hasSourceHost() => $_has(0);
-  void clearSourceHost() => clearField(1);
-}
-
-class IdRequest extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('IdRequest', package: const $pb.PackageName('selfpass.credentials'))
-    ..aOS(1, 'id')
-    ..hasRequiredFields = false
-  ;
-
-  IdRequest._() : super();
-  factory IdRequest() => create();
-  factory IdRequest.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory IdRequest.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  IdRequest clone() => IdRequest()..mergeFromMessage(this);
-  IdRequest copyWith(void Function(IdRequest) updates) => super.copyWith((message) => updates(message as IdRequest));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static IdRequest create() => IdRequest._();
-  IdRequest createEmptyInstance() => create();
-  static $pb.PbList<IdRequest> createRepeated() => $pb.PbList<IdRequest>();
-  static IdRequest getDefault() => _defaultInstance ??= create()..freeze();
-  static IdRequest _defaultInstance;
-
-  $core.String get id => $_getS(0, '');
-  set id($core.String v) { $_setString(0, v); }
-  $core.bool hasId() => $_has(0);
-  void clearId() => clearField(1);
-}
-
-class UpdateRequest extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('UpdateRequest', package: const $pb.PackageName('selfpass.credentials'))
-    ..aOS(1, 'id')
-    ..a<CredentialRequest>(2, 'credential', $pb.PbFieldType.OM, CredentialRequest.getDefault, CredentialRequest.create)
-    ..hasRequiredFields = false
-  ;
-
-  UpdateRequest._() : super();
-  factory UpdateRequest() => create();
-  factory UpdateRequest.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory UpdateRequest.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  UpdateRequest clone() => UpdateRequest()..mergeFromMessage(this);
-  UpdateRequest copyWith(void Function(UpdateRequest) updates) => super.copyWith((message) => updates(message as UpdateRequest));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static UpdateRequest create() => UpdateRequest._();
-  UpdateRequest createEmptyInstance() => create();
-  static $pb.PbList<UpdateRequest> createRepeated() => $pb.PbList<UpdateRequest>();
-  static UpdateRequest getDefault() => _defaultInstance ??= create()..freeze();
-  static UpdateRequest _defaultInstance;
-
-  $core.String get id => $_getS(0, '');
-  set id($core.String v) { $_setString(0, v); }
-  $core.bool hasId() => $_has(0);
-  void clearId() => clearField(1);
-
-  CredentialRequest get credential => $_getN(1);
-  set credential(CredentialRequest v) { setField(2, v); }
-  $core.bool hasCredential() => $_has(1);
-  void clearCredential() => clearField(2);
-}
-
-class DumpResponse extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('DumpResponse', package: const $pb.PackageName('selfpass.credentials'))
-    ..a<$core.List<$core.int>>(1, 'contents', $pb.PbFieldType.OY)
-    ..hasRequiredFields = false
-  ;
-
-  DumpResponse._() : super();
-  factory DumpResponse() => create();
-  factory DumpResponse.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory DumpResponse.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  DumpResponse clone() => DumpResponse()..mergeFromMessage(this);
-  DumpResponse copyWith(void Function(DumpResponse) updates) => super.copyWith((message) => updates(message as DumpResponse));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static DumpResponse create() => DumpResponse._();
-  DumpResponse createEmptyInstance() => create();
-  static $pb.PbList<DumpResponse> createRepeated() => $pb.PbList<DumpResponse>();
-  static DumpResponse getDefault() => _defaultInstance ??= create()..freeze();
-  static DumpResponse _defaultInstance;
-
-  $core.List<$core.int> get contents => $_getN(0);
-  set contents($core.List<$core.int> v) { $_setBytes(0, v); }
-  $core.bool hasContents() => $_has(0);
-  void clearContents() => clearField(1);
-}
-
-class EmptyRequest extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('EmptyRequest', package: const $pb.PackageName('selfpass.credentials'))
-    ..hasRequiredFields = false
-  ;
-
-  EmptyRequest._() : super();
-  factory EmptyRequest() => create();
-  factory EmptyRequest.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory EmptyRequest.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  EmptyRequest clone() => EmptyRequest()..mergeFromMessage(this);
-  EmptyRequest copyWith(void Function(EmptyRequest) updates) => super.copyWith((message) => updates(message as EmptyRequest));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static EmptyRequest create() => EmptyRequest._();
-  EmptyRequest createEmptyInstance() => create();
-  static $pb.PbList<EmptyRequest> createRepeated() => $pb.PbList<EmptyRequest>();
-  static EmptyRequest getDefault() => _defaultInstance ??= create()..freeze();
-  static EmptyRequest _defaultInstance;
-}
-
-class Metadata extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('Metadata', package: const $pb.PackageName('selfpass.credentials'))
-    ..aOS(1, 'id')
-    ..a<$1.Timestamp>(2, 'createdAt', $pb.PbFieldType.OM, $1.Timestamp.getDefault, $1.Timestamp.create)
-    ..a<$1.Timestamp>(3, 'updatedAt', $pb.PbFieldType.OM, $1.Timestamp.getDefault, $1.Timestamp.create)
-    ..aOS(4, 'primary')
-    ..aOS(5, 'sourceHost')
-    ..aOS(6, 'loginUrl')
-    ..aOS(7, 'tag')
-    ..hasRequiredFields = false
-  ;
-
-  Metadata._() : super();
-  factory Metadata() => create();
-  factory Metadata.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory Metadata.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  Metadata clone() => Metadata()..mergeFromMessage(this);
-  Metadata copyWith(void Function(Metadata) updates) => super.copyWith((message) => updates(message as Metadata));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static Metadata create() => Metadata._();
-  Metadata createEmptyInstance() => create();
-  static $pb.PbList<Metadata> createRepeated() => $pb.PbList<Metadata>();
-  static Metadata getDefault() => _defaultInstance ??= create()..freeze();
-  static Metadata _defaultInstance;
-
-  $core.String get id => $_getS(0, '');
-  set id($core.String v) { $_setString(0, v); }
-  $core.bool hasId() => $_has(0);
-  void clearId() => clearField(1);
-
-  $1.Timestamp get createdAt => $_getN(1);
-  set createdAt($1.Timestamp v) { setField(2, v); }
-  $core.bool hasCreatedAt() => $_has(1);
-  void clearCreatedAt() => clearField(2);
-
-  $1.Timestamp get updatedAt => $_getN(2);
-  set updatedAt($1.Timestamp v) { setField(3, v); }
-  $core.bool hasUpdatedAt() => $_has(2);
-  void clearUpdatedAt() => clearField(3);
-
-  $core.String get primary => $_getS(3, '');
-  set primary($core.String v) { $_setString(3, v); }
-  $core.bool hasPrimary() => $_has(3);
-  void clearPrimary() => clearField(4);
-
-  $core.String get sourceHost => $_getS(4, '');
-  set sourceHost($core.String v) { $_setString(4, v); }
-  $core.bool hasSourceHost() => $_has(4);
-  void clearSourceHost() => clearField(5);
-
-  $core.String get loginUrl => $_getS(5, '');
-  set loginUrl($core.String v) { $_setString(5, v); }
-  $core.bool hasLoginUrl() => $_has(5);
-  void clearLoginUrl() => clearField(6);
-
-  $core.String get tag => $_getS(6, '');
-  set tag($core.String v) { $_setString(6, v); }
-  $core.bool hasTag() => $_has(6);
-  void clearTag() => clearField(7);
-}
-
-class Credential extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('Credential', package: const $pb.PackageName('selfpass.credentials'))
-    ..aOS(1, 'id')
-    ..a<$1.Timestamp>(2, 'createdAt', $pb.PbFieldType.OM, $1.Timestamp.getDefault, $1.Timestamp.create)
-    ..a<$1.Timestamp>(3, 'updatedAt', $pb.PbFieldType.OM, $1.Timestamp.getDefault, $1.Timestamp.create)
-    ..aOS(4, 'primary')
-    ..aOS(5, 'username')
-    ..aOS(6, 'email')
-    ..aOS(7, 'password')
-    ..aOS(8, 'sourceHost')
-    ..aOS(9, 'loginUrl')
-    ..aOS(10, 'tag')
-    ..aOS(11, 'otpSecret')
-    ..hasRequiredFields = false
-  ;
-
-  Credential._() : super();
-  factory Credential() => create();
-  factory Credential.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory Credential.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  Credential clone() => Credential()..mergeFromMessage(this);
-  Credential copyWith(void Function(Credential) updates) => super.copyWith((message) => updates(message as Credential));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static Credential create() => Credential._();
-  Credential createEmptyInstance() => create();
-  static $pb.PbList<Credential> createRepeated() => $pb.PbList<Credential>();
-  static Credential getDefault() => _defaultInstance ??= create()..freeze();
-  static Credential _defaultInstance;
-
-  $core.String get id => $_getS(0, '');
-  set id($core.String v) { $_setString(0, v); }
-  $core.bool hasId() => $_has(0);
-  void clearId() => clearField(1);
-
-  $1.Timestamp get createdAt => $_getN(1);
-  set createdAt($1.Timestamp v) { setField(2, v); }
-  $core.bool hasCreatedAt() => $_has(1);
-  void clearCreatedAt() => clearField(2);
-
-  $1.Timestamp get updatedAt => $_getN(2);
-  set updatedAt($1.Timestamp v) { setField(3, v); }
-  $core.bool hasUpdatedAt() => $_has(2);
-  void clearUpdatedAt() => clearField(3);
-
-  $core.String get primary => $_getS(3, '');
-  set primary($core.String v) { $_setString(3, v); }
-  $core.bool hasPrimary() => $_has(3);
-  void clearPrimary() => clearField(4);
-
-  $core.String get username => $_getS(4, '');
-  set username($core.String v) { $_setString(4, v); }
-  $core.bool hasUsername() => $_has(4);
-  void clearUsername() => clearField(5);
-
-  $core.String get email => $_getS(5, '');
-  set email($core.String v) { $_setString(5, v); }
-  $core.bool hasEmail() => $_has(5);
-  void clearEmail() => clearField(6);
-
-  $core.String get password => $_getS(6, '');
-  set password($core.String v) { $_setString(6, v); }
-  $core.bool hasPassword() => $_has(6);
-  void clearPassword() => clearField(7);
-
-  $core.String get sourceHost => $_getS(7, '');
-  set sourceHost($core.String v) { $_setString(7, v); }
-  $core.bool hasSourceHost() => $_has(7);
-  void clearSourceHost() => clearField(8);
-
-  $core.String get loginUrl => $_getS(8, '');
-  set loginUrl($core.String v) { $_setString(8, v); }
-  $core.bool hasLoginUrl() => $_has(8);
-  void clearLoginUrl() => clearField(9);
-
-  $core.String get tag => $_getS(9, '');
-  set tag($core.String v) { $_setString(9, v); }
-  $core.bool hasTag() => $_has(9);
-  void clearTag() => clearField(10);
-
-  $core.String get otpSecret => $_getS(10, '');
-  set otpSecret($core.String v) { $_setString(10, v); }
-  $core.bool hasOtpSecret() => $_has(10);
-  void clearOtpSecret() => clearField(11);
-}
-
-class CredentialRequest extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo('CredentialRequest', package: const $pb.PackageName('selfpass.credentials'))
-    ..aOS(1, 'primary')
-    ..aOS(2, 'username')
-    ..aOS(3, 'email')
-    ..aOS(4, 'password')
-    ..aOS(5, 'sourceHost')
-    ..aOS(6, 'loginUrl')
-    ..aOS(7, 'tag')
-    ..aOS(8, 'otpSecret')
-    ..hasRequiredFields = false
-  ;
-
-  CredentialRequest._() : super();
-  factory CredentialRequest() => create();
-  factory CredentialRequest.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory CredentialRequest.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  CredentialRequest clone() => CredentialRequest()..mergeFromMessage(this);
-  CredentialRequest copyWith(void Function(CredentialRequest) updates) => super.copyWith((message) => updates(message as CredentialRequest));
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static CredentialRequest create() => CredentialRequest._();
-  CredentialRequest createEmptyInstance() => create();
-  static $pb.PbList<CredentialRequest> createRepeated() => $pb.PbList<CredentialRequest>();
-  static CredentialRequest getDefault() => _defaultInstance ??= create()..freeze();
-  static CredentialRequest _defaultInstance;
-
-  $core.String get primary => $_getS(0, '');
-  set primary($core.String v) { $_setString(0, v); }
-  $core.bool hasPrimary() => $_has(0);
-  void clearPrimary() => clearField(1);
-
-  $core.String get username => $_getS(1, '');
-  set username($core.String v) { $_setString(1, v); }
-  $core.bool hasUsername() => $_has(1);
-  void clearUsername() => clearField(2);
-
-  $core.String get email => $_getS(2, '');
-  set email($core.String v) { $_setString(2, v); }
-  $core.bool hasEmail() => $_has(2);
-  void clearEmail() => clearField(3);
-
-  $core.String get password => $_getS(3, '');
-  set password($core.String v) { $_setString(3, v); }
-  $core.bool hasPassword() => $_has(3);
-  void clearPassword() => clearField(4);
-
-  $core.String get sourceHost => $_getS(4, '');
-  set sourceHost($core.String v) { $_setString(4, v); }
-  $core.bool hasSourceHost() => $_has(4);
-  void clearSourceHost() => clearField(5);
-
-  $core.String get loginUrl => $_getS(5, '');
-  set loginUrl($core.String v) { $_setString(5, v); }
-  $core.bool hasLoginUrl() => $_has(5);
-  void clearLoginUrl() => clearField(6);
-
-  $core.String get tag => $_getS(6, '');
-  set tag($core.String v) { $_setString(6, v); }
-  $core.bool hasTag() => $_has(6);
-  void clearTag() => clearField(7);
-
-  $core.String get otpSecret => $_getS(7, '');
-  set otpSecret($core.String v) { $_setString(7, v); }
-  $core.bool hasOtpSecret() => $_has(7);
-  void clearOtpSecret() => clearField(8);
-}
-
diff --git a/client/lib/protobuf/service.pbenum.dart b/client/lib/protobuf/service.pbenum.dart
deleted file mode 100644
index cf0e02d..0000000
--- a/client/lib/protobuf/service.pbenum.dart
+++ /dev/null
@@ -1,6 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: service.proto
-///
-// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name
-
diff --git a/client/lib/protobuf/service.pbgrpc.dart b/client/lib/protobuf/service.pbgrpc.dart
deleted file mode 100644
index 40a8c1f..0000000
--- a/client/lib/protobuf/service.pbgrpc.dart
+++ /dev/null
@@ -1,158 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: service.proto
-///
-// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name
-
-import 'dart:async' as $async;
-
-import 'dart:core' as $core show int, String, List;
-
-import 'package:grpc/service_api.dart' as $grpc;
-import 'service.pb.dart' as $0;
-export 'service.pb.dart';
-
-class CredentialServiceClient extends $grpc.Client {
-  static final _$getAllMetadata =
-      $grpc.ClientMethod<$0.GetAllMetadataRequest, $0.Metadata>(
-          '/selfpass.credentials.CredentialService/GetAllMetadata',
-          ($0.GetAllMetadataRequest value) => value.writeToBuffer(),
-          ($core.List<$core.int> value) => $0.Metadata.fromBuffer(value));
-  static final _$get = $grpc.ClientMethod<$0.IdRequest, $0.Credential>(
-      '/selfpass.credentials.CredentialService/Get',
-      ($0.IdRequest value) => value.writeToBuffer(),
-      ($core.List<$core.int> value) => $0.Credential.fromBuffer(value));
-  static final _$create =
-      $grpc.ClientMethod<$0.CredentialRequest, $0.Credential>(
-          '/selfpass.credentials.CredentialService/Create',
-          ($0.CredentialRequest value) => value.writeToBuffer(),
-          ($core.List<$core.int> value) => $0.Credential.fromBuffer(value));
-  static final _$update = $grpc.ClientMethod<$0.UpdateRequest, $0.Credential>(
-      '/selfpass.credentials.CredentialService/Update',
-      ($0.UpdateRequest value) => value.writeToBuffer(),
-      ($core.List<$core.int> value) => $0.Credential.fromBuffer(value));
-  static final _$delete = $grpc.ClientMethod<$0.IdRequest, $0.DeleteResponse>(
-      '/selfpass.credentials.CredentialService/Delete',
-      ($0.IdRequest value) => value.writeToBuffer(),
-      ($core.List<$core.int> value) => $0.DeleteResponse.fromBuffer(value));
-
-  CredentialServiceClient($grpc.ClientChannel channel,
-      {$grpc.CallOptions options})
-      : super(channel, options: options);
-
-  $grpc.ResponseStream<$0.Metadata> getAllMetadata(
-      $0.GetAllMetadataRequest request,
-      {$grpc.CallOptions options}) {
-    final call = $createCall(
-        _$getAllMetadata, $async.Stream.fromIterable([request]),
-        options: options);
-    return $grpc.ResponseStream(call);
-  }
-
-  $grpc.ResponseFuture<$0.Credential> get($0.IdRequest request,
-      {$grpc.CallOptions options}) {
-    final call = $createCall(_$get, $async.Stream.fromIterable([request]),
-        options: options);
-    return $grpc.ResponseFuture(call);
-  }
-
-  $grpc.ResponseFuture<$0.Credential> create($0.CredentialRequest request,
-      {$grpc.CallOptions options}) {
-    final call = $createCall(_$create, $async.Stream.fromIterable([request]),
-        options: options);
-    return $grpc.ResponseFuture(call);
-  }
-
-  $grpc.ResponseFuture<$0.Credential> update($0.UpdateRequest request,
-      {$grpc.CallOptions options}) {
-    final call = $createCall(_$update, $async.Stream.fromIterable([request]),
-        options: options);
-    return $grpc.ResponseFuture(call);
-  }
-
-  $grpc.ResponseFuture<$0.DeleteResponse> delete($0.IdRequest request,
-      {$grpc.CallOptions options}) {
-    final call = $createCall(_$delete, $async.Stream.fromIterable([request]),
-        options: options);
-    return $grpc.ResponseFuture(call);
-  }
-}
-
-abstract class CredentialServiceBase extends $grpc.Service {
-  $core.String get $name => 'selfpass.credentials.CredentialService';
-
-  CredentialServiceBase() {
-    $addMethod($grpc.ServiceMethod<$0.GetAllMetadataRequest, $0.Metadata>(
-        'GetAllMetadata',
-        getAllMetadata_Pre,
-        false,
-        true,
-        ($core.List<$core.int> value) =>
-            $0.GetAllMetadataRequest.fromBuffer(value),
-        ($0.Metadata value) => value.writeToBuffer()));
-    $addMethod($grpc.ServiceMethod<$0.IdRequest, $0.Credential>(
-        'Get',
-        get_Pre,
-        false,
-        false,
-        ($core.List<$core.int> value) => $0.IdRequest.fromBuffer(value),
-        ($0.Credential value) => value.writeToBuffer()));
-    $addMethod($grpc.ServiceMethod<$0.CredentialRequest, $0.Credential>(
-        'Create',
-        create_Pre,
-        false,
-        false,
-        ($core.List<$core.int> value) => $0.CredentialRequest.fromBuffer(value),
-        ($0.Credential value) => value.writeToBuffer()));
-    $addMethod($grpc.ServiceMethod<$0.UpdateRequest, $0.Credential>(
-        'Update',
-        update_Pre,
-        false,
-        false,
-        ($core.List<$core.int> value) => $0.UpdateRequest.fromBuffer(value),
-        ($0.Credential value) => value.writeToBuffer()));
-    $addMethod($grpc.ServiceMethod<$0.IdRequest, $0.DeleteResponse>(
-        'Delete',
-        delete_Pre,
-        false,
-        false,
-        ($core.List<$core.int> value) => $0.IdRequest.fromBuffer(value),
-        ($0.DeleteResponse value) => value.writeToBuffer()));
-  }
-
-  $async.Stream<$0.Metadata> getAllMetadata_Pre(
-      $grpc.ServiceCall call, $async.Future request) async* {
-    yield* getAllMetadata(call, (await request) as $0.GetAllMetadataRequest);
-  }
-
-  $async.Future<$0.Credential> get_Pre(
-      $grpc.ServiceCall call, $async.Future request) async {
-    return get(call, await request);
-  }
-
-  $async.Future<$0.Credential> create_Pre(
-      $grpc.ServiceCall call, $async.Future request) async {
-    return create(call, await request);
-  }
-
-  $async.Future<$0.Credential> update_Pre(
-      $grpc.ServiceCall call, $async.Future request) async {
-    return update(call, await request);
-  }
-
-  $async.Future<$0.DeleteResponse> delete_Pre(
-      $grpc.ServiceCall call, $async.Future request) async {
-    return delete(call, await request);
-  }
-
-  $async.Stream<$0.Metadata> getAllMetadata(
-      $grpc.ServiceCall call, $0.GetAllMetadataRequest request);
-  $async.Future<$0.Credential> get(
-      $grpc.ServiceCall call, $0.IdRequest request);
-  $async.Future<$0.Credential> create(
-      $grpc.ServiceCall call, $0.CredentialRequest request);
-  $async.Future<$0.Credential> update(
-      $grpc.ServiceCall call, $0.UpdateRequest request);
-  $async.Future<$0.DeleteResponse> delete(
-      $grpc.ServiceCall call, $0.IdRequest request);
-}
diff --git a/client/lib/protobuf/service.pbjson.dart b/client/lib/protobuf/service.pbjson.dart
deleted file mode 100644
index 0cfafe3..0000000
--- a/client/lib/protobuf/service.pbjson.dart
+++ /dev/null
@@ -1,124 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: service.proto
-///
-// ignore_for_file: camel_case_types,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name
-
-const DeleteResponse$json = const {
-  '1': 'DeleteResponse',
-  '2': const [
-    const {'1': 'success', '3': 1, '4': 1, '5': 8, '10': 'success'},
-  ],
-};
-
-const GetAllMetadataRequest$json = const {
-  '1': 'GetAllMetadataRequest',
-  '2': const [
-    const {'1': 'source_host', '3': 1, '4': 1, '5': 9, '10': 'sourceHost'},
-  ],
-};
-
-const IdRequest$json = const {
-  '1': 'IdRequest',
-  '2': const [
-    const {'1': 'id', '3': 1, '4': 1, '5': 9, '10': 'id'},
-  ],
-};
-
-const UpdateRequest$json = const {
-  '1': 'UpdateRequest',
-  '2': const [
-    const {'1': 'id', '3': 1, '4': 1, '5': 9, '10': 'id'},
-    const {
-      '1': 'credential',
-      '3': 2,
-      '4': 1,
-      '5': 11,
-      '6': '.selfpass.credentials.CredentialRequest',
-      '10': 'credential'
-    },
-  ],
-};
-
-const DumpResponse$json = const {
-  '1': 'DumpResponse',
-  '2': const [
-    const {'1': 'contents', '3': 1, '4': 1, '5': 12, '10': 'contents'},
-  ],
-};
-
-const EmptyRequest$json = const {
-  '1': 'EmptyRequest',
-};
-
-const Metadata$json = const {
-  '1': 'Metadata',
-  '2': const [
-    const {'1': 'id', '3': 1, '4': 1, '5': 9, '10': 'id'},
-    const {
-      '1': 'created_at',
-      '3': 2,
-      '4': 1,
-      '5': 11,
-      '6': '.google.protobuf.Timestamp',
-      '10': 'createdAt'
-    },
-    const {
-      '1': 'updated_at',
-      '3': 3,
-      '4': 1,
-      '5': 11,
-      '6': '.google.protobuf.Timestamp',
-      '10': 'updatedAt'
-    },
-    const {'1': 'primary', '3': 4, '4': 1, '5': 9, '10': 'primary'},
-    const {'1': 'source_host', '3': 5, '4': 1, '5': 9, '10': 'sourceHost'},
-    const {'1': 'login_url', '3': 6, '4': 1, '5': 9, '10': 'loginUrl'},
-    const {'1': 'tag', '3': 7, '4': 1, '5': 9, '10': 'tag'},
-  ],
-};
-
-const Credential$json = const {
-  '1': 'Credential',
-  '2': const [
-    const {'1': 'id', '3': 1, '4': 1, '5': 9, '10': 'id'},
-    const {
-      '1': 'created_at',
-      '3': 2,
-      '4': 1,
-      '5': 11,
-      '6': '.google.protobuf.Timestamp',
-      '10': 'createdAt'
-    },
-    const {
-      '1': 'updated_at',
-      '3': 3,
-      '4': 1,
-      '5': 11,
-      '6': '.google.protobuf.Timestamp',
-      '10': 'updatedAt'
-    },
-    const {'1': 'primary', '3': 4, '4': 1, '5': 9, '10': 'primary'},
-    const {'1': 'username', '3': 5, '4': 1, '5': 9, '10': 'username'},
-    const {'1': 'email', '3': 6, '4': 1, '5': 9, '10': 'email'},
-    const {'1': 'password', '3': 7, '4': 1, '5': 9, '10': 'password'},
-    const {'1': 'source_host', '3': 8, '4': 1, '5': 9, '10': 'sourceHost'},
-    const {'1': 'login_url', '3': 9, '4': 1, '5': 9, '10': 'loginUrl'},
-    const {'1': 'tag', '3': 10, '4': 1, '5': 9, '10': 'tag'},
-    const {'1': 'otp_secret', '3': 11, '4': 1, '5': 9, '10': 'otpSecret'},
-  ],
-};
-
-const CredentialRequest$json = const {
-  '1': 'CredentialRequest',
-  '2': const [
-    const {'1': 'primary', '3': 1, '4': 1, '5': 9, '10': 'primary'},
-    const {'1': 'username', '3': 2, '4': 1, '5': 9, '10': 'username'},
-    const {'1': 'email', '3': 3, '4': 1, '5': 9, '10': 'email'},
-    const {'1': 'password', '3': 4, '4': 1, '5': 9, '10': 'password'},
-    const {'1': 'source_host', '3': 5, '4': 1, '5': 9, '10': 'sourceHost'},
-    const {'1': 'login_url', '3': 6, '4': 1, '5': 9, '10': 'loginUrl'},
-    const {'1': 'tag', '3': 7, '4': 1, '5': 9, '10': 'tag'},
-    const {'1': 'otp_secret', '3': 8, '4': 1, '5': 9, '10': 'otpSecret'},
-  ],
-};
diff --git a/client/lib/protobuf/service.proto b/client/lib/protobuf/service.proto
deleted file mode 100644
index c9dfa49..0000000
--- a/client/lib/protobuf/service.proto
+++ /dev/null
@@ -1,75 +0,0 @@
-syntax = "proto3";
-
-package selfpass.credentials;
-
-option go_package = "protobuf";
-
-import "google/protobuf/timestamp.proto";
-
-service CredentialService {
-        rpc GetAllMetadata (GetAllMetadataRequest) returns (stream Metadata);
-        rpc Get (IdRequest) returns (Credential);
-        rpc Create (CredentialRequest) returns (Credential);
-        rpc Update (UpdateRequest) returns (Credential);
-        rpc Delete (IdRequest) returns (DeleteResponse);
-        // rpc Dump (EmptyRequest) returns (DumpResponse);
-}
-
-message DeleteResponse {
-        bool success = 1;
-}
-
-message GetAllMetadataRequest {
-        string source_host = 1;
-}
-
-message IdRequest {
-        string id = 1;
-}
-
-message UpdateRequest {
-        string id = 1;
-        CredentialRequest credential = 2;
-}
-
-message DumpResponse {
-        bytes contents = 1;
-}
-
-message EmptyRequest {
-}
-
-message Metadata {
-        string id = 1;
-        google.protobuf.Timestamp created_at = 2;
-        google.protobuf.Timestamp updated_at = 3;
-        string primary = 4;
-        string source_host = 5;
-        string login_url = 6;
-        string tag = 7;
-}
-
-message Credential {
-        string id = 1;
-        google.protobuf.Timestamp created_at = 2;
-        google.protobuf.Timestamp updated_at = 3;
-        string primary = 4;
-        string username = 5;
-        string email = 6;
-        string password = 7;
-        string source_host = 8;
-        string login_url = 9;
-        string tag = 10;
-        string otp_secret = 11;
-}
-
-message CredentialRequest {
-        string primary = 1;
-        string username = 2;
-        string email = 3;
-        string password = 4;
-        string source_host = 5;
-        string login_url = 6;
-        string tag = 7;
-        string otp_secret = 8;
-}
diff --git a/client/lib/repositories/grpc_credentials_client.dart b/client/lib/repositories/grpc_credentials_client.dart
index df1811f..54206ed 100644
--- a/client/lib/repositories/grpc_credentials_client.dart
+++ b/client/lib/repositories/grpc_credentials_client.dart
@@ -3,9 +3,8 @@ import 'dart:convert';
 import 'dart:io';
 
 import 'package:grpc/grpc.dart';
-
-import '../protobuf/service.pbgrpc.dart' as grpc;
-import '../protobuf/service.pb.dart' as protobuf;
+import 'package:selfpass_protobuf/credentials.pbgrpc.dart' as grpc;
+import 'package:selfpass_protobuf/credentials.pb.dart' as protobuf;
 
 import '../types/abstracts.dart';
 import '../types/connection_config.dart';
@@ -13,7 +12,7 @@ import '../types/credential.dart';
 
 class GRPCCredentialsClient implements CredentialsRepo {
   static GRPCCredentialsClient _cached;
-  grpc.CredentialServiceClient _client;
+  grpc.CredentialsClient _client;
 
   GRPCCredentialsClient(ConnectionConfig config) {
     final caCert = utf8.encode(config.caCertificate);
@@ -24,7 +23,7 @@ class GRPCCredentialsClient implements CredentialsRepo {
     final hostname = splitHost[0];
     final port = int.parse(splitHost[1]);
 
-    _client = grpc.CredentialServiceClient(ClientChannel(
+    _client = grpc.CredentialsClient(ClientChannel(
       hostname,
       port: port,
       options: ChannelOptions(
@@ -37,7 +36,7 @@ class GRPCCredentialsClient implements CredentialsRepo {
       config == null ? _cached : _cached = GRPCCredentialsClient(config);
 
   Stream<Metadata> getAllMetadata(String sourceHost) {
-    final request = grpc.GetAllMetadataRequest();
+    final request = grpc.SourceHostRequest();
     request.sourceHost = sourceHost;
 
     return _client.getAllMetadata(request).map<Metadata>(
diff --git a/client/lib/types/credential.dart b/client/lib/types/credential.dart
index 2b0956e..bd975ac 100644
--- a/client/lib/types/credential.dart
+++ b/client/lib/types/credential.dart
@@ -1,4 +1,4 @@
-import '../protobuf/service.pb.dart' as protobuf;
+import 'package:selfpass_protobuf/credentials.pb.dart' as protobuf;
 
 class Metadata {
   String id;
diff --git a/client/pubspec.lock b/client/pubspec.lock
index f46a501..0cd7052 100644
--- a/client/pubspec.lock
+++ b/client/pubspec.lock
@@ -214,6 +214,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.3"
+  selfpass_protobuf:
+    dependency: "direct main"
+    description:
+      path: "../protobuf/dart"
+      relative: true
+    source: path
+    version: "0.0.0"
   sky_engine:
     dependency: transitive
     description: flutter
diff --git a/client/pubspec.yaml b/client/pubspec.yaml
index b273453..8f636d8 100644
--- a/client/pubspec.yaml
+++ b/client/pubspec.yaml
@@ -34,6 +34,9 @@ dependencies:
 
   otp: ^1.0.3
 
+  selfpass_protobuf:
+    path: ../protobuf/dart
+
 dev_dependencies:
   flutter_test:
     sdk: flutter