diff --git a/src/data/http_error.rs b/src/api_data/http_error.rs
similarity index 100%
rename from src/data/http_error.rs
rename to src/api_data/http_error.rs
diff --git a/src/api_data/login_success.rs b/src/api_data/login_success.rs
new file mode 100644
index 0000000..7db4834
--- /dev/null
+++ b/src/api_data/login_success.rs
@@ -0,0 +1,28 @@
+use serde::{Deserialize, Serialize};
+
+/// Data sent in case of successful login
+///
+/// @author Pierre Hubert
+#[derive(Serialize, Deserialize)]
+struct LoginTokens {
+    token1: String,
+    token2: String,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct LoginSuccess {
+    success: String,
+    tokens: LoginTokens,
+}
+
+impl LoginSuccess {
+    pub fn new(token: &str) -> LoginSuccess {
+        LoginSuccess {
+            success: "Login successful".to_string(),
+            tokens: LoginTokens {
+                token1: token.to_string(),
+                token2: "dummy_data".to_string(),
+            },
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/api_data/mod.rs b/src/api_data/mod.rs
new file mode 100644
index 0000000..a0433ab
--- /dev/null
+++ b/src/api_data/mod.rs
@@ -0,0 +1,9 @@
+///! # Presentation
+///! This crate contains all the serializable structures that can be sent through the API to the
+///! Clients
+///!
+///! ## Author
+///! Pierre Hubert
+
+pub mod http_error;
+pub mod login_success;
\ No newline at end of file
diff --git a/src/controllers/account_controller.rs b/src/controllers/account_controller.rs
index 08d08a1..42bf5b2 100644
--- a/src/controllers/account_controller.rs
+++ b/src/controllers/account_controller.rs
@@ -1,23 +1,12 @@
-use serde::{Deserialize, Serialize};
-use crate::data::http_request_handler::HttpRequestHandler;
+use crate::api_data::login_success::LoginSuccess;
 use crate::controllers::routes::RequestResult;
+use crate::data::http_request_handler::HttpRequestHandler;
 use crate::helpers::account_helper;
 
 /// Account controller
 ///
 /// @author Pierre Hubert
 
-#[derive(Serialize, Deserialize)]
-struct LoginTokens {
-    token1: String,
-    token2: String,
-}
-
-#[derive(Serialize, Deserialize)]
-struct LoginSuccess {
-    tokens: LoginTokens
-}
-
 /// Sign in user
 pub fn login_user(request: &mut HttpRequestHandler) -> RequestResult {
     let email = request.post_email("userMail")?;
@@ -31,17 +20,12 @@ pub fn login_user(request: &mut HttpRequestHandler) -> RequestResult {
 
     match token {
         Ok(t) => {
-            request.set_response(LoginSuccess {
-                tokens: LoginTokens {
-                    token1: t,
-                    token2: "dummy_data".to_string()
-                }
-            })
-        },
+            request.set_response(LoginSuccess::new(&t))
+        }
         Err(e) => {
             // TODO : limit request
             println!("Error on login: {}", e);
             request.forbidden("Invalid email address / password!".to_string())
-        },
+        }
     }
 }
\ No newline at end of file
diff --git a/src/controllers/server.rs b/src/controllers/server.rs
index 39d01e3..dedf696 100644
--- a/src/controllers/server.rs
+++ b/src/controllers/server.rs
@@ -2,7 +2,6 @@ use actix_web::{App, HttpResponse, HttpServer, web, http, FromRequest, HttpReque
 
 use crate::controllers::routes::{get_routes, Route, RequestResult};
 use crate::data::config::Config;
-use crate::data::http_error::HttpError;
 use crate::controllers::routes::Method::{GET, POST};
 use crate::data::http_request_handler::{HttpRequestHandler, RequestValue};
 use actix_web::dev::{PayloadStream, Payload, Decompress};
@@ -13,6 +12,7 @@ use actix_web::error::{ErrorBadRequest};
 use encoding_rs::UTF_8;
 use std::collections::HashMap;
 use percent_encoding::{percent_decode_str};
+use crate::api_data::http_error::HttpError;
 
 
 /// Main server functions
diff --git a/src/data/http_request_handler.rs b/src/data/http_request_handler.rs
index fb9a486..14ab0d4 100644
--- a/src/data/http_request_handler.rs
+++ b/src/data/http_request_handler.rs
@@ -1,6 +1,5 @@
 use actix_web::{web, HttpRequest, HttpResponse};
 use crate::controllers::routes::RequestResult;
-use crate::data::http_error::HttpError;
 use std::error::Error;
 use serde::Serialize;
 use crate::data::error::{ResultBoxError, ExecError};
@@ -10,6 +9,7 @@ use actix_web::http::{HeaderName, HeaderValue};
 use std::str::FromStr;
 use crate::data::config::conf;
 use crate::data::api_client::APIClient;
+use crate::api_data::http_error::HttpError;
 
 /// Http request handler
 ///
diff --git a/src/data/mod.rs b/src/data/mod.rs
index 07dc607..3ca7b88 100644
--- a/src/data/mod.rs
+++ b/src/data/mod.rs
@@ -1,7 +1,6 @@
 pub mod error;
 pub mod config;
 
-pub mod http_error;
 pub mod http_request_handler;
 pub mod api_client;
 
diff --git a/src/lib.rs b/src/lib.rs
index 97a73fa..0b18cbf 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,6 @@
 pub mod data;
 pub mod helpers;
 pub mod controllers;
+pub mod api_data;
+
 pub mod database_structure;
\ No newline at end of file