diff --git a/SerpentRace_Frontend/src/api/deckApi.js b/SerpentRace_Frontend/src/api/deckApi.js
new file mode 100644
index 00000000..b322caab
--- /dev/null
+++ b/SerpentRace_Frontend/src/api/deckApi.js
@@ -0,0 +1,15 @@
+import { apiClient } from './userApi'
+
+// Create a new deck in the backend
+export const createDeck = async (deck) => {
+  try {
+    const response = await apiClient.post('/decks', deck)
+    return response.data
+  } catch (err) {
+    throw err
+  }
+}
+
+export default {
+  createDeck
+}
diff --git a/SerpentRace_Frontend/src/api/userApi.js b/SerpentRace_Frontend/src/api/userApi.js
index 7b4dc6e7..c39a7136 100644
--- a/SerpentRace_Frontend/src/api/userApi.js
+++ b/SerpentRace_Frontend/src/api/userApi.js
@@ -1,7 +1,7 @@
 import axios from "axios"
 
 export const API_CONFIG = {
-  baseURL: import.meta.env.VITE_API_URL + "/api",
+  baseURL: (import.meta.env.VITE_API_URL ? import.meta.env.VITE_API_URL : '') + "/api",
   wsURL: "http://localhost:3000",
   timeout: 10000,
   retryAttempts: 3,
diff --git a/SerpentRace_Frontend/src/pages/DeckCreator/DeckCreator.jsx b/SerpentRace_Frontend/src/pages/DeckCreator/DeckCreator.jsx
index 3f76ca20..78032b44 100644
--- a/SerpentRace_Frontend/src/pages/DeckCreator/DeckCreator.jsx
+++ b/SerpentRace_Frontend/src/pages/DeckCreator/DeckCreator.jsx
@@ -7,6 +7,7 @@ import Navbar from "../../components/Navbar/Navbar.jsx"
 import DeckHeader from "../../components/DeckCreator/DeckHeader.jsx"
 import CardsList from "../../components/DeckCreator/CardsList.jsx"
 import CardEditor from "../../components/DeckCreator/CardEditor.jsx"
+import { createDeck } from '../../api/deckApi'
 
 export default function DeckCreator() {
   const { deckId } = useParams() // URL-ből deck ID (új deck esetén undefined)
@@ -86,12 +87,23 @@ export default function DeckCreator() {
 
   const handleSaveDeck = async () => {
     try {
-      // TODO: API mentés
       console.log("Deck mentése:", deck)
-      alert("✅ Deck sikeresen mentve!")
+
+      const payload = {
+        name: deck.name,
+        type: (deck.type || 'Question').toString().toUpperCase(),
+        ctype: deck.privacy === 'public' ? 'PUBLIC' : 'PRIVATE',
+        description: deck.description || '',
+        cards: deck.cards.map(c => ({ ...c, text: c.question || c.statement || c.text || '' }))
+      }
+
+      const saved = await createDeck(payload)
+      setDeck(prev => ({ ...prev, id: saved.id ?? prev.id, creationdate: saved.creationdate ?? prev.creationdate, updatedate: saved.updatedate ?? prev.updatedate }))
+      console.log('Deck saved (backend):', saved)
+      alert('✅ Deck sikeresen mentve!')
     } catch (error) {
-      console.error("Mentési hiba:", error)
-      alert("❌ Hiba történt a mentés során!")
+      console.error('Mentési hiba:', error)
+      alert('❌ Hiba történt a mentés során: ' + (error?.response?.data?.error || error.message || String(error)))
     }
   }