diff --git a/ct/headers/onetimesecret b/ct/headers/onetimesecret
new file mode 100644
index 000000000..ed03033ff
--- /dev/null
+++ b/ct/headers/onetimesecret
@@ -0,0 +1,6 @@
+   ____           _______               _____                     __ 
+  / __ \____  ___/_  __(_)___ ___  ___ / ___/___  _____________  / /_
+ / / / / __ \/ _ \/ / / / __ `__ \/ _ \\__ \/ _ \/ ___/ ___/ _ \/ __/
+/ /_/ / / / /  __/ / / / / / / / /  __/__/ /  __/ /__/ /  /  __/ /_  
+\____/_/ /_/\___/_/ /_/_/ /_/ /_/\___/____/\___/\___/_/   \___/\__/  
+                                                                     
diff --git a/ct/onetimesecret.sh b/ct/onetimesecret.sh
new file mode 100644
index 000000000..3e2084980
--- /dev/null
+++ b/ct/onetimesecret.sh
@@ -0,0 +1,104 @@
+#!/usr/bin/env bash
+_CS_DEFAULT_URL="https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main"
+_cs_boot="${COMMUNITY_SCRIPTS_CORE_DIR:-$(dirname "${BASH_SOURCE[0]}")/../../core}/core/build.func"
+source "$_cs_boot" 2>/dev/null || source <(curl -fsSL "${COMMUNITY_SCRIPTS_CORE_URL:-https://raw.githubusercontent.com/community-scripts/core/main}/core/build.func")
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: Hai Tran (epiHATR)
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://onetimesecret.com/ | Github: https://github.com/onetimesecret/onetimesecret
+
+APP="OneTimeSecret"
+var_tags="${var_tags:-security;privacy;secrets}"
+var_cpu="${var_cpu:-2}"
+var_ram="${var_ram:-4096}"
+var_disk="${var_disk:-10}"
+var_os="${var_os:-debian}"
+var_version="${var_version:-13}"
+#var_arm64="${var_arm64:-no}" # unset = ask the user; set yes/no only when verified
+var_unprivileged="${var_unprivileged:-1}"
+
+header_info "$APP"
+variables
+color
+catch_errors
+
+function update_script() {
+  header_info
+  check_container_storage
+  check_container_resources
+
+  SSL_VALUE="${OTS_SSL:-}"
+  if [[ -n "${SSL_VALUE}" ]]; then
+    case "${SSL_VALUE,,}" in
+    1 | true | yes | on) SSL_VALUE="true" ;;
+    0 | false | no | off) SSL_VALUE="false" ;;
+    *)
+      msg_error "Invalid OTS_SSL value '${OTS_SSL}' (use true/false)"
+      exit 1
+      ;;
+    esac
+  fi
+
+  if [[ ! -d /opt/onetimesecret ]] || [[ ! -f /opt/onetimesecret/.env ]]; then
+    msg_error "No ${APP} Installation Found!"
+    exit
+  fi
+
+  if check_for_gh_release "onetimesecret" "onetimesecret/onetimesecret"; then
+    msg_info "Stopping Service"
+    systemctl stop onetimesecret
+    msg_ok "Stopped Service"
+
+    create_backup /opt/onetimesecret/.env
+
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "onetimesecret" "onetimesecret/onetimesecret" "tarball"
+
+    RUBY_VERSION=$(tr -d ' \n' </opt/onetimesecret/.ruby-version 2>/dev/null)
+    RUBY_VERSION="${RUBY_VERSION:-3.4.10}" setup_ruby
+
+    PNPM_VERSION=$(sed -n 's/.*"packageManager": "pnpm@\([^"]*\)".*/\1/p' /opt/onetimesecret/package.json)
+    NODE_VERSION=$(tr -d ' \n' </opt/onetimesecret/.nvmrc 2>/dev/null)
+    NODE_VERSION="${NODE_VERSION:-25}" NODE_MODULE="pnpm@${PNPM_VERSION:-11.1.2}" setup_nodejs
+
+    restore_backup
+
+    msg_info "Reconciling Application"
+    systemctl enable -q --now redis-server
+    cd /opt/onetimesecret
+    mkdir -p tmp/pids log
+    $STD bash bin/setup reconcile
+    msg_ok "Reconciled Application"
+
+    msg_info "Building Frontend"
+    cd /opt/onetimesecret
+    $STD pnpm run build
+    msg_ok "Built Frontend"
+
+    msg_info "Starting Service"
+    systemctl start onetimesecret
+    msg_ok "Started Service"
+    msg_ok "Updated successfully!"
+  fi
+  exit
+}
+
+start
+build_container
+description
+
+DISPLAY_HOST="${OTS_HOST:-$IP}"
+case "${OTS_SSL:-false,,}" in
+1 | true | yes | on)
+  DISPLAY_SCHEME="https"
+  ;;
+*)
+  DISPLAY_SCHEME="http"
+  ;;
+esac
+
+msg_ok "Completed Successfully!\n"
+echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
+echo -e "${INFO}${YW}Access it using the following URL:${CL}"
+echo -e "${GATEWAY}${BGN}${DISPLAY_SCHEME}://${DISPLAY_HOST}${CL}"
+echo -e "${INFO}${YW} Configure hostname, TLS, and SMTP settings in:${CL}"
+echo -e "${TAB}${BGN}/opt/onetimesecret/.env${CL}"
diff --git a/install/onetimesecret-install.sh b/install/onetimesecret-install.sh
new file mode 100644
index 000000000..1b543fa33
--- /dev/null
+++ b/install/onetimesecret-install.sh
@@ -0,0 +1,144 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: Hai Tran (epiHATR)
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://onetimesecret.com/ | Github: https://github.com/onetimesecret/onetimesecret
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+msg_info "Installing Dependencies"
+$STD apt install -y \
+  build-essential \
+  git \
+  libffi-dev \
+  libgmp-dev \
+  libpq-dev \
+  libreadline-dev \
+  libsodium23 \
+  libsqlite3-dev \
+  libssl-dev \
+  libxml2-dev \
+  libxslt1-dev \
+  libyaml-dev \
+  nginx \
+  pkg-config \
+  python3 \
+  redis-server \
+  zlib1g-dev
+msg_ok "Installed Dependencies"
+
+fetch_and_deploy_gh_release "onetimesecret" "onetimesecret/onetimesecret" "tarball"
+
+RUBY_VERSION=$(tr -d ' \n' </opt/onetimesecret/.ruby-version 2>/dev/null)
+RUBY_VERSION="${RUBY_VERSION:-3.4.10}" setup_ruby
+
+PNPM_VERSION=$(sed -n 's/.*"packageManager": "pnpm@\([^"]*\)".*/\1/p' /opt/onetimesecret/package.json)
+NODE_VERSION=$(tr -d ' \n' </opt/onetimesecret/.nvmrc 2>/dev/null)
+NODE_VERSION="${NODE_VERSION:-25}" NODE_MODULE="pnpm@${PNPM_VERSION:-11.1.2}" setup_nodejs
+
+HOST_VALUE="${OTS_HOST:-$LOCAL_IP}"
+SSL_VALUE="${OTS_SSL:-false}"
+case "${SSL_VALUE,,}" in
+1 | true | yes | on) SSL_VALUE="true" ;;
+0 | false | no | off | "") SSL_VALUE="false" ;;
+*)
+  msg_error "Invalid OTS_SSL value '${OTS_SSL}' (use true/false)"
+  exit 1
+  ;;
+esac
+
+msg_info "Configuring Application"
+systemctl enable -q --now redis-server
+cd /opt/onetimesecret
+$STD bash bin/setup init
+sed -i \
+  -e "s|^REDIS_URL=.*|REDIS_URL=redis://127.0.0.1:6379/0|" \
+  -e "s|^HOST=.*|HOST=${HOST_VALUE//&/\\&}|" \
+  -e "s|^SSL=.*|SSL=${SSL_VALUE}|" \
+  /opt/onetimesecret/.env
+if grep -q '^RACK_ENV=' /opt/onetimesecret/.env; then
+  sed -i 's|^RACK_ENV=.*|RACK_ENV=production|' /opt/onetimesecret/.env
+else
+  echo "RACK_ENV=production" >>/opt/onetimesecret/.env
+fi
+if grep -q '^AUTHENTICATION_MODE=' /opt/onetimesecret/.env; then
+  sed -i 's|^AUTHENTICATION_MODE=.*|AUTHENTICATION_MODE=simple|' /opt/onetimesecret/.env
+else
+  echo "AUTHENTICATION_MODE=simple" >>/opt/onetimesecret/.env
+fi
+if ! grep -q '^PORT=' /opt/onetimesecret/.env; then
+  echo "PORT=3000" >>/opt/onetimesecret/.env
+fi
+chmod 600 /opt/onetimesecret/.env
+mkdir -p /opt/onetimesecret/tmp/pids /opt/onetimesecret/log
+msg_ok "Configured Application"
+
+msg_info "Reconciling Application"
+cd /opt/onetimesecret
+$STD bash bin/setup reconcile
+msg_ok "Reconciled Application"
+
+msg_info "Building Frontend"
+cd /opt/onetimesecret
+$STD pnpm run build
+msg_ok "Built Frontend"
+
+msg_info "Creating Service"
+cat <<'EOF' >/etc/systemd/system/onetimesecret.service
+[Unit]
+Description=Onetime Secret Service
+After=network.target redis-server.service
+Requires=redis-server.service
+
+[Service]
+Type=simple
+User=root
+WorkingDirectory=/opt/onetimesecret
+Environment=HOME=/root
+Environment=PATH=/root/.rbenv/shims:/root/.rbenv/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+EnvironmentFile=/opt/onetimesecret/.env
+ExecStart=/root/.rbenv/shims/bundle exec puma -C etc/puma.rb
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF
+systemctl enable -q --now onetimesecret
+msg_ok "Created Service"
+
+msg_info "Configuring Nginx"
+cat <<'EOF' >/etc/nginx/sites-available/onetimesecret
+server {
+  listen 80 default_server;
+  server_name _;
+
+  location / {
+    proxy_pass http://127.0.0.1:3000;
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+  }
+}
+EOF
+ln -sf /etc/nginx/sites-available/onetimesecret /etc/nginx/sites-enabled/onetimesecret
+rm -f /etc/nginx/sites-enabled/default
+$STD nginx -t
+systemctl enable -q --now nginx
+systemctl reload nginx
+msg_ok "Configured Nginx"
+
+motd_ssh
+customize
+cleanup_lxc