diff --git a/server/migrations/20240806135204_links.ts b/server/migrations/20240806135204_links.ts
index aea9b5a..9c8b40e 100644
--- a/server/migrations/20240806135204_links.ts
+++ b/server/migrations/20240806135204_links.ts
@@ -10,7 +10,7 @@ export async function up(knex: Knex): Promise<void> {
       .primary();
     table.string('url').notNullable();
     table.string('user_id').references('id').inTable('user');
-    table.string('shorter_name').notNullable();
+    table.string('shorter_name').unique().notNullable();
     table.timestamps(true, true);
   });
 }
diff --git a/server/src/repository/Link.ts b/server/src/repository/Link.ts
index 1da627e..4f42496 100644
--- a/server/src/repository/Link.ts
+++ b/server/src/repository/Link.ts
@@ -15,8 +15,10 @@ export class Link {
     return link;
   }
 
-  static async getByID(ID: string): Promise<ILink> {
-    const [link] = await database<ILink>('links').select('*').where({ id: ID });
+  static async getByID(ID: string): Promise<ILink[]> {
+    const link = await database<ILink>('links')
+      .select('*')
+      .where({ user_id: ID });
     return link;
   }
 
diff --git a/server/src/services/Link.ts b/server/src/services/Link.ts
new file mode 100644
index 0000000..e1b6573
--- /dev/null
+++ b/server/src/services/Link.ts
@@ -0,0 +1,21 @@
+import Repository from '../repository';
+import { BadRequestError } from '../utils/errorHandler';
+
+import type { ILink, ILinkForCreate } from '@linx/shared';
+
+export default class Link {
+  static async create(link_dto: ILinkForCreate): Promise<string> {
+    const check = await Repository.link.getByShorterName(link_dto.shorter_name);
+    if (check)
+      throw new BadRequestError('Exists the shorter name, please select other');
+
+    const link = await Repository.link.create(link_dto);
+
+    return link;
+  }
+
+  static async getAllUserLinks(user_id: string): Promise<ILink[]> {
+    const links = await Repository.link.getByID(user_id);
+    return links;
+  }
+}
diff --git a/server/src/services/index.ts b/server/src/services/index.ts
index b6625c8..6bf24ca 100644
--- a/server/src/services/index.ts
+++ b/server/src/services/index.ts
@@ -1,7 +1,9 @@
 import Auth from './Auth';
+import Link from './Link';
 import User from './User';
 
 export default class Services {
   static auth = Auth;
   static user = User;
+  static link = Link;
 }