diff --git a/violet-server/package-lock.json b/violet-server/package-lock.json
index 9badb27c2..822c44981 100644
--- a/violet-server/package-lock.json
+++ b/violet-server/package-lock.json
@@ -28,6 +28,7 @@
         "joi": "^17.11.0",
         "mysql2": "^3.11.0",
         "nest-winston": "^1.9.4",
+        "passport-discord": "^0.1.4",
         "passport-jwt": "^4.0.1",
         "reflect-metadata": "^0.1.13",
         "rxjs": "^7.8.1",
@@ -3339,6 +3340,14 @@
         }
       ]
     },
+    "node_modules/base64url": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/base64url/-/base64url-3.0.1.tgz",
+      "integrity": "sha512-ir1UPr3dkwexU7FdV8qBBbNDRUhMmIekYMFZfi+C/sLNnRESKPl23nB9b2pltqfOQNnGzsDdId90AEtG5tCx4A==",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
     "node_modules/big-integer": {
       "version": "1.6.52",
       "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.52.tgz",
@@ -8401,6 +8410,11 @@
         "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
       }
     },
+    "node_modules/oauth": {
+      "version": "0.10.0",
+      "resolved": "https://registry.npmjs.org/oauth/-/oauth-0.10.0.tgz",
+      "integrity": "sha512-1orQ9MT1vHFGQxhuy7E/0gECD3fd2fCC+PIX+/jgmU/gI3EpRocXtmtvxCO5x3WZ443FLTLFWNDjl5MPJf9u+Q=="
+    },
     "node_modules/object-assign": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -8682,6 +8696,14 @@
         "url": "https://github.com/sponsors/jaredhanson"
       }
     },
+    "node_modules/passport-discord": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/passport-discord/-/passport-discord-0.1.4.tgz",
+      "integrity": "sha512-VJWPYqSOmh7SaCLw/C+k1ZqCzJnn2frrmQRx1YrcPJ3MQ+Oa31XclbbmqFICSvl8xv3Fqd6YWQ4H4p1MpIN9rA==",
+      "dependencies": {
+        "passport-oauth2": "^1.5.0"
+      }
+    },
     "node_modules/passport-jwt": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/passport-jwt/-/passport-jwt-4.0.1.tgz",
@@ -8691,6 +8713,25 @@
         "passport-strategy": "^1.0.0"
       }
     },
+    "node_modules/passport-oauth2": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/passport-oauth2/-/passport-oauth2-1.8.0.tgz",
+      "integrity": "sha512-cjsQbOrXIDE4P8nNb3FQRCCmJJ/utnFKEz2NX209f7KOHPoX18gF7gBzBbLLsj2/je4KrgiwLLGjf0lm9rtTBA==",
+      "dependencies": {
+        "base64url": "3.x.x",
+        "oauth": "0.10.x",
+        "passport-strategy": "1.x.x",
+        "uid2": "0.0.x",
+        "utils-merge": "1.x.x"
+      },
+      "engines": {
+        "node": ">= 0.4.0"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/jaredhanson"
+      }
+    },
     "node_modules/passport-strategy": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/passport-strategy/-/passport-strategy-1.0.0.tgz",
@@ -11020,6 +11061,11 @@
         "node": ">=8"
       }
     },
+    "node_modules/uid2": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/uid2/-/uid2-0.0.4.tgz",
+      "integrity": "sha512-IevTus0SbGwQzYh3+fRsAMTVVPOoIVufzacXcHPmdlle1jUpq7BRL+mw3dgeLanvGZdwwbWhRV6XrcFNdBmjWA=="
+    },
     "node_modules/undici-types": {
       "version": "5.26.5",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
@@ -14104,6 +14150,11 @@
       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
       "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="
     },
+    "base64url": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/base64url/-/base64url-3.0.1.tgz",
+      "integrity": "sha512-ir1UPr3dkwexU7FdV8qBBbNDRUhMmIekYMFZfi+C/sLNnRESKPl23nB9b2pltqfOQNnGzsDdId90AEtG5tCx4A=="
+    },
     "big-integer": {
       "version": "1.6.52",
       "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.52.tgz",
@@ -17939,6 +17990,11 @@
         "set-blocking": "^2.0.0"
       }
     },
+    "oauth": {
+      "version": "0.10.0",
+      "resolved": "https://registry.npmjs.org/oauth/-/oauth-0.10.0.tgz",
+      "integrity": "sha512-1orQ9MT1vHFGQxhuy7E/0gECD3fd2fCC+PIX+/jgmU/gI3EpRocXtmtvxCO5x3WZ443FLTLFWNDjl5MPJf9u+Q=="
+    },
     "object-assign": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -18140,6 +18196,14 @@
         "utils-merge": "^1.0.1"
       }
     },
+    "passport-discord": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/passport-discord/-/passport-discord-0.1.4.tgz",
+      "integrity": "sha512-VJWPYqSOmh7SaCLw/C+k1ZqCzJnn2frrmQRx1YrcPJ3MQ+Oa31XclbbmqFICSvl8xv3Fqd6YWQ4H4p1MpIN9rA==",
+      "requires": {
+        "passport-oauth2": "^1.5.0"
+      }
+    },
     "passport-jwt": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/passport-jwt/-/passport-jwt-4.0.1.tgz",
@@ -18149,6 +18213,18 @@
         "passport-strategy": "^1.0.0"
       }
     },
+    "passport-oauth2": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/passport-oauth2/-/passport-oauth2-1.8.0.tgz",
+      "integrity": "sha512-cjsQbOrXIDE4P8nNb3FQRCCmJJ/utnFKEz2NX209f7KOHPoX18gF7gBzBbLLsj2/je4KrgiwLLGjf0lm9rtTBA==",
+      "requires": {
+        "base64url": "3.x.x",
+        "oauth": "0.10.x",
+        "passport-strategy": "1.x.x",
+        "uid2": "0.0.x",
+        "utils-merge": "1.x.x"
+      }
+    },
     "passport-strategy": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/passport-strategy/-/passport-strategy-1.0.0.tgz",
@@ -19772,6 +19848,11 @@
         "@lukeed/csprng": "^1.0.0"
       }
     },
+    "uid2": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/uid2/-/uid2-0.0.4.tgz",
+      "integrity": "sha512-IevTus0SbGwQzYh3+fRsAMTVVPOoIVufzacXcHPmdlle1jUpq7BRL+mw3dgeLanvGZdwwbWhRV6XrcFNdBmjWA=="
+    },
     "undici-types": {
       "version": "5.26.5",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
@@ -19910,6 +19991,7 @@
         "joi": "^17.11.0",
         "mysql2": "^3.11.0",
         "nest-winston": "^1.9.4",
+        "passport-discord": "^0.1.4",
         "passport-jwt": "^4.0.1",
         "prettier": "^3.0.0",
         "reflect-metadata": "^0.1.13",
@@ -22425,6 +22507,11 @@
           "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
           "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="
         },
+        "base64url": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/base64url/-/base64url-3.0.1.tgz",
+          "integrity": "sha512-ir1UPr3dkwexU7FdV8qBBbNDRUhMmIekYMFZfi+C/sLNnRESKPl23nB9b2pltqfOQNnGzsDdId90AEtG5tCx4A=="
+        },
         "big-integer": {
           "version": "1.6.52",
           "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.52.tgz",
@@ -26260,6 +26347,11 @@
             "set-blocking": "^2.0.0"
           }
         },
+        "oauth": {
+          "version": "0.10.0",
+          "resolved": "https://registry.npmjs.org/oauth/-/oauth-0.10.0.tgz",
+          "integrity": "sha512-1orQ9MT1vHFGQxhuy7E/0gECD3fd2fCC+PIX+/jgmU/gI3EpRocXtmtvxCO5x3WZ443FLTLFWNDjl5MPJf9u+Q=="
+        },
         "object-assign": {
           "version": "4.1.1",
           "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -26461,6 +26553,14 @@
             "utils-merge": "^1.0.1"
           }
         },
+        "passport-discord": {
+          "version": "0.1.4",
+          "resolved": "https://registry.npmjs.org/passport-discord/-/passport-discord-0.1.4.tgz",
+          "integrity": "sha512-VJWPYqSOmh7SaCLw/C+k1ZqCzJnn2frrmQRx1YrcPJ3MQ+Oa31XclbbmqFICSvl8xv3Fqd6YWQ4H4p1MpIN9rA==",
+          "requires": {
+            "passport-oauth2": "^1.5.0"
+          }
+        },
         "passport-jwt": {
           "version": "4.0.1",
           "resolved": "https://registry.npmjs.org/passport-jwt/-/passport-jwt-4.0.1.tgz",
@@ -26470,6 +26570,18 @@
             "passport-strategy": "^1.0.0"
           }
         },
+        "passport-oauth2": {
+          "version": "1.8.0",
+          "resolved": "https://registry.npmjs.org/passport-oauth2/-/passport-oauth2-1.8.0.tgz",
+          "integrity": "sha512-cjsQbOrXIDE4P8nNb3FQRCCmJJ/utnFKEz2NX209f7KOHPoX18gF7gBzBbLLsj2/je4KrgiwLLGjf0lm9rtTBA==",
+          "requires": {
+            "base64url": "3.x.x",
+            "oauth": "0.10.x",
+            "passport-strategy": "1.x.x",
+            "uid2": "0.0.x",
+            "utils-merge": "1.x.x"
+          }
+        },
         "passport-strategy": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/passport-strategy/-/passport-strategy-1.0.0.tgz",
@@ -28093,6 +28205,11 @@
             "@lukeed/csprng": "^1.0.0"
           }
         },
+        "uid2": {
+          "version": "0.0.4",
+          "resolved": "https://registry.npmjs.org/uid2/-/uid2-0.0.4.tgz",
+          "integrity": "sha512-IevTus0SbGwQzYh3+fRsAMTVVPOoIVufzacXcHPmdlle1jUpq7BRL+mw3dgeLanvGZdwwbWhRV6XrcFNdBmjWA=="
+        },
         "undici-types": {
           "version": "5.26.5",
           "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
diff --git a/violet-server/package.json b/violet-server/package.json
index 4dc00c09c..6b4728255 100644
--- a/violet-server/package.json
+++ b/violet-server/package.json
@@ -39,6 +39,7 @@
     "joi": "^17.11.0",
     "mysql2": "^3.11.0",
     "nest-winston": "^1.9.4",
+    "passport-discord": "^0.1.4",
     "passport-jwt": "^4.0.1",
     "reflect-metadata": "^0.1.13",
     "rxjs": "^7.8.1",
diff --git a/violet-server/src/auth/auth.controller.ts b/violet-server/src/auth/auth.controller.ts
index a97261858..32be6784e 100644
--- a/violet-server/src/auth/auth.controller.ts
+++ b/violet-server/src/auth/auth.controller.ts
@@ -21,6 +21,7 @@ import { Request, Response } from 'express';
 import { ResLoginUser } from './dtos/res-login-user.dto';
 import { plainToClass } from 'class-transformer';
 import { HmacAuthGuard } from './guards/hmac.guard';
+import { DiscordAuthGuard } from './guards/discord.guard';
 
 @ApiTags('auth')
 @Controller('auth')
@@ -104,4 +105,21 @@ export class AuthController {
     res.clearCookie('refresh-expires');
     res.send();
   }
+
+  @Get('discord')
+  @Post('discord')
+  @UseGuards(DiscordAuthGuard)
+  @ApiOperation({ summary: 'Login From Discord' })
+  logInDiscord() {
+    return { ok: true };
+  }
+
+  @Get('discord/redirect')
+  @UseGuards(DiscordAuthGuard)
+  @UseGuards(AccessTokenGuard)
+  @ApiOperation({ summary: 'Redirect discord oauth2' })
+  @Redirect('violet://discord-login')
+  async redirect(@CurrentUser() currentUser: User) {
+    return await this.authService.updateDiscordInfo(currentUser);
+  }
 }
diff --git a/violet-server/src/auth/auth.module.ts b/violet-server/src/auth/auth.module.ts
index 002ec446e..94762a1da 100644
--- a/violet-server/src/auth/auth.module.ts
+++ b/violet-server/src/auth/auth.module.ts
@@ -6,6 +6,7 @@ import { AccessTokenStrategy } from './jwt/access-token.strategy';
 import { RefreshTokenStrategy } from './jwt/refresh-token.strategy';
 import { UserModule } from 'src/user/user.module';
 import { JwtModule } from '@nestjs/jwt';
+import { DiscordStrategy } from './discord/discord.strategy';
 
 @Module({
   imports: [JwtModule.register({}), UserModule],
@@ -14,6 +15,7 @@ import { JwtModule } from '@nestjs/jwt';
     UserRepository,
     AccessTokenStrategy,
     RefreshTokenStrategy,
+    DiscordStrategy,
   ],
   controllers: [AuthController],
 })
diff --git a/violet-server/src/auth/auth.service.ts b/violet-server/src/auth/auth.service.ts
index cc2eb7b6a..007827a12 100644
--- a/violet-server/src/auth/auth.service.ts
+++ b/violet-server/src/auth/auth.service.ts
@@ -1,10 +1,16 @@
-import { BadRequestException, HttpException, Injectable } from '@nestjs/common';
+import {
+  BadRequestException,
+  HttpException,
+  Injectable,
+  Logger,
+} from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
 import { JwtService } from '@nestjs/jwt';
 import { UserRegisterDTO } from 'src/user/dtos/user-register.dto';
 import { UserRepository } from 'src/user/user.repository';
 import { ResLoginUser } from './dtos/res-login-user.dto';
 import { Tokens } from './jwt/jwt.token';
+import { User } from 'src/user/entity/user.entity';
 
 @Injectable()
 export class AuthService {
@@ -95,4 +101,19 @@ export class AuthService {
   async deleteRefreshToken(userAppId: string) {
     await this.userRepository.update({ userAppId }, { refreshToken: null });
   }
+
+  async updateDiscordInfo(
+    user: User,
+  ): Promise<{ ok: boolean; error?: string }> {
+    try {
+      const { userAppId, discordId, avatar } = user;
+      await this.userRepository.update({ userAppId }, { discordId, avatar });
+
+      return { ok: true };
+    } catch (e) {
+      Logger.error(e);
+
+      return { ok: false, error: e };
+    }
+  }
 }
diff --git a/violet-server/src/auth/discord/discord.strategy.ts b/violet-server/src/auth/discord/discord.strategy.ts
new file mode 100644
index 000000000..95a16b310
--- /dev/null
+++ b/violet-server/src/auth/discord/discord.strategy.ts
@@ -0,0 +1,28 @@
+import { Injectable, UnauthorizedException } from '@nestjs/common';
+import { Profile, Strategy } from 'passport-discord';
+import { ConfigService } from '@nestjs/config';
+import { PassportStrategy } from '@nestjs/passport';
+
+@Injectable()
+export class DiscordStrategy extends PassportStrategy(Strategy, 'discord') {
+  constructor(private readonly configService: ConfigService) {
+    super({
+      clientID: configService.get<string>('DISCORD_CLIENT_ID'),
+      clientSecret: configService.get<string>('DISCORD_CLIENT_SECRET'),
+      callbackURL: 'http://localhost:3000/api/v2/auth/discord/redirect',
+      scope: ['identify'],
+    });
+  }
+
+  async validate(accessToken: string, refreshToken: string, profile: Profile) {
+    try {
+      const { id: discordId, avatar } = profile;
+      return {
+        discordId: discordId,
+        avatar: avatar,
+      };
+    } catch (error) {
+      throw new UnauthorizedException(error);
+    }
+  }
+}
diff --git a/violet-server/src/auth/guards/discord.guard.ts b/violet-server/src/auth/guards/discord.guard.ts
new file mode 100644
index 000000000..5d789de58
--- /dev/null
+++ b/violet-server/src/auth/guards/discord.guard.ts
@@ -0,0 +1,26 @@
+import {
+  ExecutionContext,
+  Injectable,
+  UnauthorizedException,
+} from '@nestjs/common';
+import { AuthGuard } from '@nestjs/passport';
+
+@Injectable()
+export class DiscordAuthGuard extends AuthGuard('discord') {
+  constructor() {
+    super({
+      property: 'discord',
+    });
+  }
+
+  async canActivate(context: ExecutionContext) {
+    return (await super.canActivate(context)) as boolean;
+  }
+
+  handleRequest(err: any, user: any) {
+    if (err || !user) {
+      throw err || new UnauthorizedException('Retry login');
+    }
+    return user;
+  }
+}
diff --git a/violet-server/src/auth/jwt/access-token.strategy.ts b/violet-server/src/auth/jwt/access-token.strategy.ts
index 7bcfc3901..0f268b95d 100644
--- a/violet-server/src/auth/jwt/access-token.strategy.ts
+++ b/violet-server/src/auth/jwt/access-token.strategy.ts
@@ -25,7 +25,6 @@ export class AccessTokenStrategy extends PassportStrategy(
 
   async validate(req: Request, payload: JwtPayload) {
     try {
-      console.log('validate');
       const user = await this.userRepository.findOneBy({
         userAppId: payload.userAppId,
       });
diff --git a/violet-server/src/auth/jwt/jwt.payload.ts b/violet-server/src/auth/jwt/jwt.payload.ts
index 93231a243..cebf08b4c 100644
--- a/violet-server/src/auth/jwt/jwt.payload.ts
+++ b/violet-server/src/auth/jwt/jwt.payload.ts
@@ -1,5 +1,6 @@
 export class JwtPayload {
   userAppId: string;
+  discordId?: string;
   id: string;
   refreshToken?: string;
 }
diff --git a/violet-server/src/common/decorators/current-user.decorator.ts b/violet-server/src/common/decorators/current-user.decorator.ts
index 61a4f2c83..5fe9bd442 100644
--- a/violet-server/src/common/decorators/current-user.decorator.ts
+++ b/violet-server/src/common/decorators/current-user.decorator.ts
@@ -5,6 +5,8 @@ export const CurrentUser = createParamDecorator(
   (data: keyof JwtPayload | undefined, ctx: ExecutionContext) => {
     const request = ctx.switchToHttp().getRequest();
 
+    request.user = { ...request.user, ...request.discord };
+
     const { refreshToken, ...responUser } = request.user;
 
     if (!data) return responUser;
diff --git a/violet-server/src/user/entity/user.entity.ts b/violet-server/src/user/entity/user.entity.ts
index 47d81f092..0fb110e99 100644
--- a/violet-server/src/user/entity/user.entity.ts
+++ b/violet-server/src/user/entity/user.entity.ts
@@ -1,7 +1,7 @@
 import { ApiProperty } from '@nestjs/swagger';
 import { IsNotEmpty } from 'class-validator';
 import { CoreEntity } from 'src/common/entities/core.entity';
-import { Column, Entity, OneToMany } from 'typeorm';
+import { Column, Entity, OneToMany, Index } from 'typeorm';
 import { Exclude } from 'class-transformer';
 import { Comment } from 'src/comment/entity/comment.entity';
 
@@ -16,16 +16,18 @@ export class User extends CoreEntity {
   userAppId: string;
 
   @Column({ nullable: true })
+  @Index()
   discordId?: string;
 
   @Column({ nullable: true })
-  avartar?: string;
+  avatar?: string;
 
   @Column({ unique: true, nullable: true })
   nickname?: string;
 
   @Column({ nullable: true })
   @Exclude()
+  @Index()
   refreshToken?: string;
 
   @OneToMany(() => Comment, (comment) => comment.user)
diff --git a/violet-server/src/user/user.controller.ts b/violet-server/src/user/user.controller.ts
index a9da346f2..20699a9eb 100644
--- a/violet-server/src/user/user.controller.ts
+++ b/violet-server/src/user/user.controller.ts
@@ -3,6 +3,8 @@ import { ApiCreatedResponse, ApiOperation, ApiTags } from '@nestjs/swagger';
 import { UserRegisterDTO } from './dtos/user-register.dto';
 import { UserService } from './user.service';
 import { HmacAuthGuard } from 'src/auth/guards/hmac.guard';
+import { CurrentUser } from 'src/common/decorators/current-user.decorator';
+import { AccessTokenGuard } from 'src/auth/guards/access-token.guard';
 
 @ApiTags('user')
 @Controller('user')
@@ -18,4 +20,14 @@ export class UserController {
   ): Promise<{ ok: boolean; error?: string }> {
     return await this.userService.registerUser(dto);
   }
+
+  @Get('discord')
+  @ApiOperation({ summary: 'Get userAppIds registered by discord id' })
+  @ApiCreatedResponse({ description: '' })
+  @UseGuards(AccessTokenGuard)
+  async listDiscordUserAppIds(
+    @CurrentUser('discordId') discordId?: string,
+  ): Promise<string[]> {
+    return await this.userService.listDiscordUserAppIds(discordId);
+  }
 }
diff --git a/violet-server/src/user/user.service.ts b/violet-server/src/user/user.service.ts
index 298c7fa55..94e182d80 100644
--- a/violet-server/src/user/user.service.ts
+++ b/violet-server/src/user/user.service.ts
@@ -1,4 +1,9 @@
-import { Injectable, Logger, UnauthorizedException } from '@nestjs/common';
+import {
+  BadRequestException,
+  Injectable,
+  Logger,
+  UnauthorizedException,
+} from '@nestjs/common';
 import { UserRepository } from './user.repository';
 import { UserRegisterDTO } from './dtos/user-register.dto';
 
@@ -8,7 +13,7 @@ export class UserService {
 
   async registerUser(
     dto: UserRegisterDTO,
-  ): Promise<{ ok: boolean; err?: string }> {
+  ): Promise<{ ok: boolean; error?: string }> {
     try {
       if (await this.userRepository.isUserExists(dto.userAppId))
         throw new UnauthorizedException('user app id already exists');
@@ -19,7 +24,24 @@ export class UserService {
     } catch (e) {
       Logger.error(e);
 
-      return { ok: false, err: e };
+      return { ok: false, error: e };
     }
   }
+
+  async listDiscordUserAppIds(discordId?: string): Promise<string[]> {
+    if (discordId == null) {
+      throw new BadRequestException('discord login is required');
+    }
+
+    const users = await this.userRepository.find({
+      select: {
+        userAppId: true,
+      },
+      where: {
+        discordId: discordId!,
+      },
+    });
+
+    return users.map(({ userAppId }) => userAppId);
+  }
 }