diff --git a/giterated-daemon/src/database_backend/handler.rs b/giterated-daemon/src/database_backend/handler.rs
index 0b2e180..038b95d 100644
--- a/giterated-daemon/src/database_backend/handler.rs
+++ b/giterated-daemon/src/database_backend/handler.rs
@@ -2,7 +2,9 @@ use std::error::Error;
 
 use futures_util::{future::BoxFuture, FutureExt};
 use giterated_models::{
-    error::{GetValueError, OperationError, RepositoryError, UserError},
+    authenticated::UserAuthenticationToken,
+    error::{GetValueError, InstanceError, OperationError, RepositoryError, UserError},
+    instance::{AuthenticationTokenRequest, Instance, RegisterAccountRequest},
     object_backend::ObjectBackend,
     repository::{
         Commit, DefaultBranch, Description, LatestCommit, Repository,
@@ -290,3 +292,36 @@ pub fn repository_set_setting(
     }
     .boxed()
 }
+
+pub fn instance_authentication_request(
+    object: &Instance,
+    operation: AuthenticationTokenRequest,
+    state: DatabaseBackend,
+) -> BoxFuture<'static, Result<UserAuthenticationToken, OperationError<InstanceError>>> {
+    let object = object.clone();
+    async move {
+        let mut backend = state.user_backend.lock().await;
+
+        backend
+            .login(&object, operation)
+            .await
+            .map_err(|e| OperationError::Internal(e.to_string()))
+    }
+    .boxed()
+}
+
+pub fn instance_registration_request(
+    _object: &Instance,
+    operation: RegisterAccountRequest,
+    state: DatabaseBackend,
+) -> BoxFuture<'static, Result<UserAuthenticationToken, OperationError<InstanceError>>> {
+    async move {
+        let mut backend = state.user_backend.lock().await;
+
+        backend
+            .register(operation)
+            .await
+            .map_err(|e| OperationError::Internal(e.to_string()))
+    }
+    .boxed()
+}
diff --git a/giterated-daemon/src/database_backend/mod.rs b/giterated-daemon/src/database_backend/mod.rs
index d32f1e3..e472297 100644
--- a/giterated-daemon/src/database_backend/mod.rs
+++ b/giterated-daemon/src/database_backend/mod.rs
@@ -17,9 +17,10 @@ use tokio::sync::Mutex;
 use crate::backend::{RepositoryBackend, UserBackend};
 
 use self::handler::{
-    repository_commit_before, repository_diff, repository_file_from_id, repository_get_setting,
-    repository_get_value, repository_info, repository_set_setting, user_get_repositories,
-    user_get_setting, user_get_value, user_set_setting,
+    instance_authentication_request, instance_registration_request, repository_commit_before,
+    repository_diff, repository_file_from_id, repository_get_setting, repository_get_value,
+    repository_info, repository_set_setting, user_get_repositories, user_get_setting,
+    user_get_value, user_set_setting,
 };
 
 #[derive(Clone, Debug)]
@@ -83,6 +84,8 @@ impl DatabaseBackend {
             .insert(repository_get_value)
             .insert(repository_get_setting)
             .insert(repository_set_setting)
+            .insert(instance_registration_request)
+            .insert(instance_authentication_request)
             .register_object::<Instance>()
             .register_object::<Repository>()
             .register_object::<User>();
diff --git a/giterated-models/src/instance/operations.rs b/giterated-models/src/instance/operations.rs
index c9404a6..b9e9536 100644
--- a/giterated-models/src/instance/operations.rs
+++ b/giterated-models/src/instance/operations.rs
@@ -31,9 +31,7 @@ impl GiteratedOperation<Instance> for RegisterAccountRequest {
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
-pub struct RegisterAccountResponse {
-    pub token: String,
-}
+pub struct RegisterAccountResponse(pub UserAuthenticationToken);
 
 /// An authentication token request.
 ///
diff --git a/giterated-models/src/repository/mod.rs b/giterated-models/src/repository/mod.rs
index 57fd47c..47b0649 100644
--- a/giterated-models/src/repository/mod.rs
+++ b/giterated-models/src/repository/mod.rs
@@ -243,7 +243,10 @@ impl From<git2::Commit<'_>> for Commit {
                 .to_string(),
             summary: commit.summary().map(|summary| summary.to_string()),
             body: commit.body().map(|body| body.to_string()),
-            parents: commit.parents().map(|parent| parent.id().to_string()).collect::<Vec<String>>(),
+            parents: commit
+                .parents()
+                .map(|parent| parent.id().to_string())
+                .collect::<Vec<String>>(),
             author: commit.author().into(),
             committer: commit.committer().into(),
             time: chrono::NaiveDateTime::from_timestamp_opt(commit.time().seconds(), 0).unwrap(),