{
    "status": "ok",
    "service": "Thiên Đạo Push Notification API",
    "version": "1.0.0",
    "endpoints": {
        "GET  ?action=get_config": "Lấy cấu hình notification (public)",
        "GET  ?action=get_templates": "Lấy danh sách template notification (public)",
        "GET  ?action=android_config": "Lấy cấu hình Android channels (public)",
        "POST ?action=register_token": "Đăng ký FCM token (auth required)",
        "POST ?action=unregister_token": "Hủy đăng ký token (auth required)",
        "POST ?action=send_push": "Gửi web push notification (auth required)",
        "POST ?action=send_topic": "Gửi push theo topic\/broadcast (auth required)",
        "POST ?action=android_send": "Gửi Android native notification (auth required)"
    },
    "auth": "Sử dụng header X-API-Key hoặc query param api_key",
    "timestamp": "2026-04-21T15:57:19+07:00"
}