diff --git a/app/app.py b/app/app.py
index 59094c2..dd09336 100644
--- a/app/app.py
+++ b/app/app.py
@@ -991,6 +991,37 @@ def vision(cid):
     return jsonify({"status": "ok", "description": description})
 
 
+@app.route("/api/subscribe", methods=["POST"])
+@login_required
+def subscribe():
+    data = request.json
+    plan_id = data["plan_id"]
+
+    db = SessionLocal()
+
+    if app.config["AUTH_MODE"] == "oauth":
+        email = session["user"]["email"]
+    else:
+        email = session["db_user"]["email"]
+
+    sub = Subscription(
+        id=str(uuid.uuid4()),
+        user_email=email,
+        plan_id=plan_id,
+        status="active",
+        renew_at=datetime.utcnow() + timedelta(days=30)
+    )
+
+    user = db.query(User).filter_by(email=email).first()
+    user.plan_id = plan_id
+
+    db.add(sub)
+    db.commit()
+    db.close()
+
+    return jsonify({"status": "ok"})
+
+
 # ===========
 #    IO