diff --git a/packages/marketplace_server/src/useMiddlewares/useAuth/index.js b/packages/marketplace_server/src/useMiddlewares/useAuth/index.js
new file mode 100644
index 00000000..49f6355b
--- /dev/null
+++ b/packages/marketplace_server/src/useMiddlewares/useAuth/index.js
@@ -0,0 +1,34 @@
+import jwt from "jsonwebtoken"
+
+export default async function (req, res, next) {
+    // extract authentification header
+    let auth = req.headers.authorization
+
+    if (!auth) {
+        return false
+    }
+
+    auth = auth.replace("Bearer ", "")
+
+    // check if authentification is valid
+    const validation = await comty.rest.session.validSession(auth).catch((error) => {
+        return {
+            valid: false,
+        }
+    })
+
+    if (!validation.valid) {
+        return res.status(401).json({ error: "Unauthorized" })
+    }
+
+    // decode authentification header
+    auth = jwt.decode(auth)
+
+    if (!auth) {
+        return res.status(401).json({ error: "Unauthorized" })
+    }
+
+    req.session = auth
+
+    return true
+}
\ No newline at end of file