diff --git a/deploy/systemd/cayce-promo.service b/deploy/systemd/cayce-promo.service
new file mode 100644
index 0000000..9a72fb2
--- /dev/null
+++ b/deploy/systemd/cayce-promo.service
@@ -0,0 +1,17 @@
+[Unit]
+Description=Cayce promo — publicación temática autónoma (FB+IG vía sfeed)
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+User=ubuntu
+# r31 (P1): corre desde el checkout del repo entity; estado en /var/lib/cayce/promo
+WorkingDirectory=/srv/cayce-core/social
+Environment=NODE_ENV=production
+Environment=PROMO_STATE_HOME=/var/lib/cayce/promo
+EnvironmentFile=/var/lib/cayce/promo/.env
+ExecStart=/usr/bin/node /srv/cayce-core/social/promo.mjs
+Restart=no
+
+[Install]
+WantedBy=multi-user.target
diff --git a/deploy/systemd/cayce-promo.timer b/deploy/systemd/cayce-promo.timer
new file mode 100644
index 0000000..f1b098f
--- /dev/null
+++ b/deploy/systemd/cayce-promo.timer
@@ -0,0 +1,10 @@
+[Unit]
+Description=Cayce promo cycle — cada 6h (publica lo debido de la campaña)
+
+[Timer]
+OnCalendar=*-*-* 09,13,15,19,21,01:00:00 UTC
+RandomizedDelaySec=300
+Persistent=true
+
+[Install]
+WantedBy=timers.target