diff --git a/server.js b/server.js
index b9c37b6..404c877 100644
--- a/server.js
+++ b/server.js
@@ -39,15 +39,16 @@ console.debug("Port: ", port);
 db = connectDatabase(config.database);
 db = initDatabase(config);
 
+// -- Usings ---
+
+app.use(handleError); // Error handling
+app.use(express.json()); // Request body handling 
+
 // --- Routing ---
 
 app.use("/", require("./src/routes/index"));
 app.use("/mods", require("./src/routes/mods"));
 
-// -- Error handling ---
-
-app.use(handleError);
-
 // --- Launch ---
 
 app.listen(port, () => {
diff --git a/src/controllers/mods.js b/src/controllers/mods.js
index 73923c5..33cd5f5 100644
--- a/src/controllers/mods.js
+++ b/src/controllers/mods.js
@@ -1,27 +1,36 @@
+const handleError = require("../middleware/errors");
 const mod_service = require("../services/modService")
 
 async function getAllMods(req, res) {
     try {
         console.debug("Calling controller");
         const query_result = await mod_service.getAllMods();
-        console.debug("Controller OK");
         res.json(query_result);
     } catch (error) {
-        console.debug("Error at controller");
-        res.status(500).json({ error: error.message });
+        console.error("ERROR: Couldn't get mods: ");
+        handleError(error, req, res, null);
     }
 }
 
 async function getModByName(req, res) {
     try {
-        console.debug("Calling controller");
         const query_result = await mod_service.getModByName(req.params.name);
         res.json(query_result);
     } catch (error) {
-        console.debug("Error at controller");
-        res.status(500).json({ error: error.message });
+        console.error("ERROR: Couldn't get mod " + req.params.name + ": ");
+        handleError(error, req, res, null);
+    }
+}
+
+async function createMod(req, res) {
+    try {
+        const status = await mod_service.createMod(req.body);
+        res.status(status);
+    } catch (error) {
+        console.error("Cannot create mod:", error.message);
+        handleError(error, req, res, null);
     }
 }
 
 
-module.exports = { getAllMods, getModByName };
\ No newline at end of file
+module.exports = { getAllMods, getModByName, createMod };
\ No newline at end of file
diff --git a/src/database/sqlite.js b/src/database/sqlite.js
index 2267d7b..5e40299 100644
--- a/src/database/sqlite.js
+++ b/src/database/sqlite.js
@@ -46,9 +46,13 @@ class SQLiteDatabase {
 
     }
 
-    async prepare(sql) {
+    async prepare(sql, params = []) {
         try {
-            return this.db.prepare(sql);
+            if (params.length > 0) {
+                return this.db.prepare(sql).run(params);
+            } else {
+                return this.db.prepare(sql);
+            }
         } catch (err) {
             console.error("Error executing prepared statement:", err)}
     }
diff --git a/src/middleware/errors.js b/src/middleware/errors.js
index 4d416b4..cb55e59 100644
--- a/src/middleware/errors.js
+++ b/src/middleware/errors.js
@@ -1,11 +1,12 @@
-const AppError = require("../utils/AppError");
+const AppError = require("../utils/appError");
 
 const handleError = (err, req, res, next) => {
-    // Send 
+    
+    // Send error infos
     if (err instanceof AppError) {
         return res.status(err.statusCode).json({
-            message: err.message,
-            status: err.status
+            status: err.status,
+            message: err.message
         });
     }
 
diff --git a/src/models/mod.js b/src/models/mod.js
index 44908ea..1e3e83b 100644
--- a/src/models/mod.js
+++ b/src/models/mod.js
@@ -17,30 +17,34 @@ async function getModByName(name) {
         }
     } catch (err) {
         console.error("Error in getModByName:", err);
-        throw error;
+        throw err;
     }
 
 }
 
+async function exists(name) {
+    return db.exists("mods", "Name", name);
+}
+
 // --- WIP ---
 
 async function createMod(mod_data) {
-    console.log("WARNING: using a WIP function : createMod (models/mods.js)")
-    const { name, description } = mod_data;
-    return db.query("INSERT INTO mods (name, description) VALUES (?, ?)", [name, description]);
+    console.warn("WARNING: using a WIP function : createMod (models/mods.js)");
+    const { name, displayName, author, versions, otherInfos } = mod_data;
+    return db.prepare("INSERT INTO mods (Name, DisplayName, Author, Versions, OtherInfos) VALUES (?, ?, ?, ?, ?)", [name, displayName, author, versions, otherInfos]);
 }
 
 async function updateMod(mod_data) {
-    console.log("WARNING: using a WIP function : updateMod (models/mods.js)")
+    console.log("WARNING: using a WIP function : updateMod (models/mods.js)");
     throw new Error("Not implemented");
     // const { name, description } = mod_data;
     // return db.query("INSERT INTO mods (name, description) VALUES (?, ?)", [name, description]);
 }
 
 async function deleteMod(name) {
-    console.log("WARNING: using a WIP function : deleteMod (models/mods.js)")
+    console.log("WARNING: using a WIP function : deleteMod (models/mods.js)");
     return db.query("DELETE FROM mods WHERE name = ?", [name]);
 }
 
 
-module.exports = { getAllMods, getModByName }
\ No newline at end of file
+module.exports = { getAllMods, getModByName, createMod, exists }
\ No newline at end of file
diff --git a/src/routes/mods.js b/src/routes/mods.js
index 3d57ad6..f62e531 100644
--- a/src/routes/mods.js
+++ b/src/routes/mods.js
@@ -9,10 +9,17 @@ router.get("/", async (req,res) => {
         controller.getAllMods(req,res);
 });
 
+// Create a mod
+router.post("/", async (req, res) => {
+        console.debug("Creating mod ", req.body.name);
+        controller.createMod(req, res);
+})
+
+//
 router.get("/:name", async (req,res) => {
         const name = req.params.name;
         console.debug("Accessing mod " + name)
         controller.getModByName(req, res);
-})
+});
 
 module.exports = router;
\ No newline at end of file
diff --git a/src/routes/users.js b/src/routes/users.js
new file mode 100644
index 0000000..e69de29
diff --git a/src/services/modService.js b/src/services/modService.js
index 3f69155..a960367 100644
--- a/src/services/modService.js
+++ b/src/services/modService.js
@@ -1,13 +1,29 @@
+const handleError = require("../middleware/errors");
 const model = require("../models/mod");
+const AppError = require("../utils/appError");
+const { validateModData } = require("../utils/validation");
 
 async function getAllMods() {
-    console.debug("Calling service");
     return model.getAllMods();
 }
 
 async function getModByName(name) {
-    console.debug("Calling service");
     return model.getModByName(name);
 }
 
-module.exports = { getAllMods, getModByName };
\ No newline at end of file
+async function createMod(mod_data) {
+    // throw new AppError(501, "Not implemented");
+    
+    // console.debug("Received body: ", JSON.stringify(mod_data));
+
+    // Check body validity
+    await validateModData(mod_data);
+
+    // Check authenticity
+    //TODO no auth provider
+
+    console.debug("Passed validity checks");
+    return model.createMod(mod_data);
+}
+
+module.exports = { getAllMods, getModByName, createMod };
\ No newline at end of file
diff --git a/src/utils/AppError.js b/src/utils/appError.js
similarity index 74%
rename from src/utils/AppError.js
rename to src/utils/appError.js
index f50f4c9..bf37a85 100644
--- a/src/utils/AppError.js
+++ b/src/utils/appError.js
@@ -3,10 +3,10 @@ class AppError extends Error {
         super(message);
         this.statusCode = statusCode;
         
-        if (status_code.ToString().startsWith("4")) {
-            this.status = "fail";
+        if (statusCode.toString().startsWith("4")) {
+            this.status = "Fail";
         } else {
-            this.status = "error";
+            this.status = "Error";
         }
     }
 }
diff --git a/src/utils/validation.js b/src/utils/validation.js
new file mode 100644
index 0000000..0e9bdda
--- /dev/null
+++ b/src/utils/validation.js
@@ -0,0 +1,26 @@
+const mod_model = require("../models/mod");
+const AppError = require("./appError");
+
+async function validateModData(mod_data) {
+    // WIP
+    const not_null = mod_data != null;
+               mod_data.name &&
+               mod_data.displayName &&
+               mod_data.author &&
+               mod_data.versions &&
+               mod_data.otherInfos;
+
+    if (!not_null) {
+        console.debug("Item is missing expected fields:", mod_data);
+        throw new AppError(400, "Bad request: missing expected fields");
+    }
+
+    const exists = await mod_model.exists(mod_data.name);
+    if (exists) {
+        console.debug("Error: Item already exists");
+        throw new AppError(403, "Forbidden: Content with this name already exists");
+    }
+}
+
+
+module.exports = { validateModData }
\ No newline at end of file