diff --git a/server.js b/server.js
index cf1216d..33b1df6 100644
--- a/server.js
+++ b/server.js
@@ -2,12 +2,12 @@
 
 const express = require("express");
 const app = express();
-const { loadConfig } = require("./src/utils/configManager");
+const configManager = require("./src/utils/configManager");
 const { connectDatabase, initDatabase  } = require('./src/database/index');
 
 
 // --- Load configuration ---
-const config = loadConfig();
+const config = configManager.loadConfig();
 
 // --- Body parsing ---
 app.use(express.json()); // Necessary to parse JSON bodies
@@ -15,6 +15,7 @@ app.use(express.json()); // Necessary to parse JSON bodies
 // Database connection
 (async () => {
 
+
     // --- Database connection ---
     await connectDatabase();
     await initDatabase();
@@ -23,6 +24,7 @@ app.use(express.json()); // Necessary to parse JSON bodies
     app.use("/", require("./src/routes/index"));
     app.use("/mods", require("./src/routes/mods"));
     app.use("/users", require("./src/routes/users"));
+    app.use("/list", require("./src/routes/list"));
     app.use("/login", require("./src/routes/login"));
 
 })();
@@ -30,7 +32,7 @@ app.use(express.json()); // Necessary to parse JSON bodies
 
 // --- Launch ---
 
-const port = config.server.port;
+const port = config.port;
 app.listen(port, () => {
     console.log("Server listening on port " + port + "...");
 })
\ No newline at end of file
diff --git a/src/controllers/auth.js b/src/controllers/auth.js
index a96c813..0a55dde 100644
--- a/src/controllers/auth.js
+++ b/src/controllers/auth.js
@@ -6,7 +6,7 @@ async function login(req, res) {
         const token = await authService.login(req.body.username, req.body.password);
         res.json({ token });
     } catch (err) {
-        handleError(err, req, res, null);
+        handleError(err, res);
     }
     
 }
\ No newline at end of file
diff --git a/src/controllers/mods.js b/src/controllers/mods.js
index 63bc80c..d1f36dc 100644
--- a/src/controllers/mods.js
+++ b/src/controllers/mods.js
@@ -1,47 +1,68 @@
 const handleError = require("../middleware/errors");
-const mod_service = require("../services/modService")
+const mod_service = require("../services/modService");
+const { authorizeModModification, authenticateToken } = require("../middleware/auth");
 
-async function getAllMods(req, res) {
+async function listMods(req, res) {
     try {
-        console.debug("Calling controller");
+        // Query
         const query_result = await mod_service.getAllMods();
         res.json(query_result);
     } catch (error) {
-        console.error("ERROR: Couldn't get mods: ");
-        handleError(error, req, res, null);
-    }
-}
-
-async function getModByName(req, res) {
-    try {
-        const query_result = await mod_service.getModByName(req.params.name);
-        res.json(query_result);
-    } catch (error) {
-        console.error("ERROR: Couldn't get mod " + req.params.name + ": ");
-        handleError(error, req, res, null);
+        handleError(error, res);
     }
 }
 
 async function createMod(req, res) {
     try {
-        await mod_service.createMod(req.body);
-        res.sendStatus(200);
+        // Authenticate
+        await authenticateToken(req);
+        // Query
+        const mod_data = req.body;
+        const user = req.token_infos.username;
+        const query_result = await mod_service.createMod(mod_data, user);
+        res.json(query_result);
     } catch (error) {
-        console.error("ERROR: Couldn't create mod:", error.message);
-        handleError(error, req, res, null);
+        handleError(error, res);
+    }
+}
+
+async function modifyMod(req, res) {
+    try {
+        // Authorize
+        authorizeModModification(req);
+        // Query
+        const mod_data = req.body;
+        const query_result = await mod_service.modifyMod(mod_data);
+        res.json(query_result);
+    } catch (error) {
+        handleError(error, res);
+    }
+}
+
+async function getModByName(req, res) {
+    try {
+        // Query
+        const name = req.params.name
+        const query_result = await mod_service.getModByName(name);
+        res.json(query_result);
+    } catch (error) {
+        handleError(error, res);
     }
 }
 
 async function deleteMod(req, res) {
     try {
-        await mod_service.deleteMod(req.params.name);
-        return res.sendStatus(200);
+        // Authorize
+        authorizeModModification(req);
+        // Query
+        const name = req.params.name
+        const query_result = await mod_service.deleteMod(name);
+        res.json(query_result);
     } catch (error) {
-        console.error("ERROR: Couldn't delete mod " + req.params.name + ":", error.message);
-        handleError(error, req, res, null);
+        handleError(error, res);
     }
 }
 
 
 
-module.exports = { getAllMods, getModByName, createMod, deleteMod };
\ No newline at end of file
+module.exports = { listMods, getModByName, createMod, modifyMod, deleteMod };
\ No newline at end of file
diff --git a/src/controllers/users.js b/src/controllers/users.js
index 61bf0d0..71e475f 100644
--- a/src/controllers/users.js
+++ b/src/controllers/users.js
@@ -1,47 +1,63 @@
 const handleError = require("../middleware/errors");
 const user_service = require("../services/userService")
+const { authorizeUserModification } = require("../middleware/auth");
 
-async function getAllUsers(req, res) {
+
+async function listUsers(req, res) {
     try {
-        console.debug("Calling controller");
+        // Query
         const query_result = await user_service.getAllUsers();
         res.json(query_result);
     } catch (error) {
-        console.error("ERROR: Couldn't get users: ");
-        handleError(error, req, res, null);
+        handleError(error, res);
     }
 }
 
 async function getUserByName(req, res) {
     try {
+        // Query
         const query_result = await user_service.getUserByName(req.params.name);
         res.json(query_result);
     } catch (error) {
-        console.error("ERROR: Couldn't get user " + req.params.name + ": ");
-        handleError(error, req, res, null);
+        handleError(error, res);
     }
 }
 
 async function createUser(req, res) {
     try {
-        await user_service.createUser(req.body);
-        res.sendStatus(200);
+        // Query
+        const query_result = await user_service.createUser(req.body);
+        res.json(query_result);
     } catch (error) {
-        console.error("ERROR: Couldn't create user:", error.message);
-        handleError(error, req, res, null);
+        handleError(error, res);
+    }
+}
+
+async function modifyUser(req, res) {
+    try {
+        // Query
+        const diff_data = req.body;
+        const query_result = await user_service.modifyUser(diff_data);
+        res.json(query_result);
+    } catch (error) {
+        handleError(error, res);
     }
 }
 
 async function deleteUser(req, res) {
     try {
-        await user_service.deleteUser(req.params.name);
-        return res.sendStatus(200);
+        // Authenticate
+        await authorizeUserModification(req);
+        // Query
+        const user = req.params.name;
+        const token_user = req.token_infos
+        const query_result = await user_service.deleteUser(user, token_user);
+        return res.json(query_result);
     } catch (error) {
-        console.error("ERROR: Couldn't delete user " + req.params.name + ":", error.message);
-        handleError(error, req, res, null);
+        handleError(error, res);
     }
 }
 
 
 
-module.exports = { getAllUsers, getUserByName, createUser, deleteUser };
\ No newline at end of file
+module.exports = { listUsers, getUserByName, createUser, modifyUser, deleteUser };
\ No newline at end of file
diff --git a/src/database/index.js b/src/database/index.js
index bb70866..8c32752 100644
--- a/src/database/index.js
+++ b/src/database/index.js
@@ -10,12 +10,12 @@ async function connectDatabase() {
     const config = await getConfig();
 
     // Choose database type
-    if (config.type === "mysql") {
-        db = new MySQLDatabase(config);
-    } else if (config.type === "sqlite") {
-        db = new SQLiteDatabase(config);
+    if (config.database.type === "mysql") {
+        db = new MySQLDatabase(config.database);
+    } else if (config.database.type === "sqlite") {
+        db = new SQLiteDatabase(config.database);
     } else {
-        throw new Error("Invalid database type: ", config.type);
+        throw new Error("Invalid database type: ", config.database.type);
     }
     
     // Connect
@@ -40,8 +40,8 @@ async function initDatabase() {
         email           TINYTEXT    NOT NULL,
         password        TINYTEXT    NOT NULL,
         profile_picture LONGTEXT,
-        role            TINYTEXT,   NOT NULL,
-        settings        LONGTEXT,
+        role            TINYTEXT    NOT NULL,
+        settings        LONGTEXT
         );`);
 
     // --- Mods ---
@@ -53,7 +53,7 @@ async function initDatabase() {
         author          TINYTEXT    NOT NULL,
         description     TINYTEXT    NOT NULL,
 
-        FOREIGN KEY author REFERENCES Users(username)
+        FOREIGN KEY (author) REFERENCES Users(username)
         );`);
 
     // Mods complementary infos
@@ -66,7 +66,7 @@ async function initDatabase() {
         creation_date       TINYTEXT    NOT NULL,
         downloads_count     INT         NOT NULL,
 
-        FOREIGN KEY mod REFERENCES Users(username)
+        FOREIGN KEY (mod) REFERENCES Users(username)
         );`);
 
     // Mods tags
@@ -74,7 +74,7 @@ async function initDatabase() {
         mod         TINYTEXT    NOT NULL,
         tag         TINYTEXT    NOT NULL,
 
-        FOREIGN KEY mod REFERENCES Mods(name)
+        FOREIGN KEY (mod) REFERENCES Mods(name)
         );`);
 
     // Mods versions
@@ -89,7 +89,7 @@ async function initDatabase() {
         environment         TINYTEXT        NOT NULL,
         url                 TINYTEXT        NOT NULL,
 
-        FOREGIN KEY mod REFERENCES Mods(name)
+        FOREIGN KEY (mod) REFERENCES Mods(name)
         );`);
 
     // User favorites (mods)
@@ -97,8 +97,8 @@ async function initDatabase() {
         username    TINYTEXT    NOT NULL,
         mod         TINYTEXT    NOT NULL,
         
-        FOREIGN KEY username    REFERENCES Users(username),
-        FOREGIN KEY mod         REFERENCES Mods(name)
+        FOREIGN KEY (username)    REFERENCES Users(username),
+        FOREIGN KEY (mod)         REFERENCES Mods(name)
         );`);
 
 }
diff --git a/src/middleware/auth.js b/src/middleware/auth.js
index 8506166..ba0d1c8 100644
--- a/src/middleware/auth.js
+++ b/src/middleware/auth.js
@@ -19,6 +19,8 @@ async function authenticateToken(req) {
     } catch (err) {
         throw new AppError(403, "Forbidden: Error verifying the authorization token");
     }
+
+    return req.token_infos;
 }
 
 
diff --git a/src/middleware/errors.js b/src/middleware/errors.js
index cb55e59..34ecb1c 100644
--- a/src/middleware/errors.js
+++ b/src/middleware/errors.js
@@ -1,6 +1,6 @@
 const AppError = require("../utils/appError");
 
-const handleError = (err, req, res, next) => {
+const handleError = (err, res) => {
     
     // Send error infos
     if (err instanceof AppError) {
diff --git a/src/models/index.js b/src/models/index.js
index b5f3bfb..7b8c71c 100644
--- a/src/models/index.js
+++ b/src/models/index.js
@@ -1,8 +1,8 @@
-const { getVersion } = require("../utils/configManager");
+const configManager = require("../utils/configManager");
 
 async function getVersion() {
     
-    const version = await getVersion();
+    const version = await configManager.getVersion();
     const res = {
         version: version
     };
diff --git a/src/models/mod.js b/src/models/mod.js
index 0794436..98ee457 100644
--- a/src/models/mod.js
+++ b/src/models/mod.js
@@ -18,7 +18,7 @@ async function getModFullInfos(name) {
  
     // Query
     const base_infos = db.query(`SELECT * FROM Mods WHERE name = ?`, [name]);
-    const other_infos = db.query(`SELECT full_description, license, links, creation_date 
+    const other_infos = db.query(`SELECT full_description, license, links, creation_date, downloads_count 
                                         FROM ModInfos WHERE name = ?`, [name]);
     const tags = getModTags(name);
 
@@ -28,7 +28,7 @@ async function getModFullInfos(name) {
     return res;
 }
 
-async function getAllVersions(mod_name) { 
+async function listVersions(mod_name) { 
     return await db.query("SELECT * FROM ModVersions WHERE mod = ?", [mod_name]);
 }
 
@@ -162,7 +162,7 @@ async function updateModInfosAttribute(name, attribute, value) {
     return;
 }
 
-async function ModExists(name) {
+async function exists(name) {
     return db.exists("Mods", "name", name);
 }
 
@@ -179,8 +179,8 @@ async function containsTag(name, tag) {
 
 // --- Exports ---
 
-module.exports = { getAllMods, getModByName, getFullModInfos,
-                   getAllModVersions, getVersionByNumber, getVersion,
+module.exports = { getAllMods, getModByName, getModFullInfos,
+                   listVersions, getVersionByNumber, getVersion,
                    createMod, addVersion, addTags,
                    updateMod,
                    deleteMod, deleteVersion, deleteTags,
diff --git a/src/routes/list.js b/src/routes/list.js
new file mode 100644
index 0000000..2829954
--- /dev/null
+++ b/src/routes/list.js
@@ -0,0 +1,24 @@
+const express = require("express");
+const { listMods } = require("../controllers/mods");
+// const { listModpacks } = require("../controllers/modpacks");
+const { listUsers } = require("../controllers/users");
+
+const router = express.Router();
+
+// List mods
+router.get("/mods", async (req,res) => {
+        listMods(req, res);
+});
+
+// List modpacks
+// router.get("/modpacks", async (req,res) => {
+//     listModpacks(req, res);
+// });
+
+// List users
+router.get("/users", async (req,res) => {
+    listUsers(req, res);
+});
+
+
+module.exports = router;
\ No newline at end of file
diff --git a/src/routes/mods.js b/src/routes/mods.js
index 3226f22..82c1e02 100644
--- a/src/routes/mods.js
+++ b/src/routes/mods.js
@@ -3,29 +3,23 @@ const controller = require("../controllers/mods");
 
 const router = express.Router();
 
-// List mods
-router.get("/", async (req,res) => {
-        console.debug("Accessing mods list");
-        controller.getAllMods(req,res);
-});
-
 // Create a mod
 router.post("/", async (req, res) => {
-        console.debug("Creating mod ", req.body.name);
         controller.createMod(req, res);
 });
 
+// Modify mod
+router.put("/:name", async (req,res) => {
+        controller.modifyMod(req,res);
+});
+
 // Get mod infos
 router.get("/:name", async (req,res) => {
-        const name = req.params.name;
-        console.debug("Accessing mod " + name)
         controller.getModByName(req, res);
 });
 
 // Delete mod
 router.delete("/:name", async (req,res) => {
-        const name = req.params.name;
-        console.debug("Deleting mod " + name)
         controller.deleteMod(req, res);
 });
 
diff --git a/src/routes/users.js b/src/routes/users.js
index 85a4d2d..16a0826 100644
--- a/src/routes/users.js
+++ b/src/routes/users.js
@@ -6,7 +6,7 @@ const router = express.Router();
 // List users
 router.get("/", async (req,res) => {
         console.debug("Accessing users list");
-        controller.getAllUsers(req,res);
+        controller.listUsers(req,res);
 });
 
 // Create a user
diff --git a/src/services/modService.js b/src/services/modService.js
index 56b9a70..19b04dd 100644
--- a/src/services/modService.js
+++ b/src/services/modService.js
@@ -50,6 +50,8 @@ async function createMod(mod_data, author) {
     const { name, display_name, description, mod_infos } = mod_data;
     mod_infos.full_description = await mdToHtml(mod_infos.full_description); // Convert
     await sanitizeModData(mod_data); // Sanitize
+    //TODO
+    // mod_infos.creation_date = ...
 
     // Write changes to database
     model.createMod(name, display_name, author, description, mod_data);
@@ -89,8 +91,8 @@ async function addTags(mod, tags) {
     await model.addTags(mod, tags);
 
     // Return
-    const { tags } = await model.getFullModInfos(mod);
-    return { "mod": mod, "tags": tags};
+    const { tags:res } = await model.getFullModInfos(mod);
+    return { "mod": mod, "tags": res};
 
 }
 
@@ -109,6 +111,9 @@ async function deleteMod(name) {
 
     // Check existence
     const mod = await model.getModByName(name);
+    if (!mod) {
+        throw new AppError(404, "No was found with this name", "Not found")
+    }
 
     // Authorize
     // TODO move outside of this function
@@ -137,13 +142,20 @@ async function deleteVersion(version_infos) {
     
     // Return
     return res;
-
-
 }
 
-async function deleteTags(tags) {
+async function deleteTags(mod, tags) {
     
-    // Check existence
+    // Validate (check existence)
+    //TODO
+    console.warn("Skipping validity checks for deleteTags");
+
+    // Wites changes to db
+    await model.deleteTags(mod, tags);
+    
+    // Return
+    const { tags:res } = await model.getFullModInfos(mod);
+    return { "mod": mod, "tags": res};
 }
 
 module.exports = { getAllMods, getModByName, getFullModInfos, 
diff --git a/src/services/userService.js b/src/services/userService.js
index 1eb2ca5..36fb406 100644
--- a/src/services/userService.js
+++ b/src/services/userService.js
@@ -27,16 +27,18 @@ async function createUser(user_data) {
     return;
 }
 
-async function deleteUser(name) {
+async function deleteUser(name, token_user) {
 
     // Check existence
     const exists = await model.exists(name);
     if (!exists) {
-        throw new AppError(404, "Not found: Cannot find user with this name");
+        throw new AppError(404, "Cannot find user with this name", "Not found");
     }
 
     // Check authenticity
-    //TODO no auth provider
+    if (name != token_user) {
+        throw new AppError(401, "", "Unauthorized");
+    }
 
     model.deleteUser(name);
     return;
diff --git a/src/utils/configManager.js b/src/utils/configManager.js
index fdf9170..5862b59 100644
--- a/src/utils/configManager.js
+++ b/src/utils/configManager.js
@@ -15,7 +15,7 @@ let config = {};
 
 // --- Default config ---
 
-const defaault_config = {
+const default_config = {
 
     "port": 8000,