diff --git a/homeassistant/light.sh b/homeassistant/light.sh
new file mode 100755
index 0000000..9f9f849
--- /dev/null
+++ b/homeassistant/light.sh
@@ -0,0 +1,25 @@
+light() {
+    local entity="light.$1"
+
+    if [[ $2 == "on" ]]; then
+        curl -X POST \
+            -H "Authorization: Bearer $HA_APIKEY" \
+            -H "Content-Type: application/json" \
+            -d "{\"entity_id\":\"$entity\"}" \
+            "$HA_URL/api/services/homeassistant/turn_on"
+
+    elif [[ $2 == "off" ]]; then
+        curl -X POST \
+            -H "Authorization: Bearer $HA_APIKEY" \
+            -H "Content-Type: application/json" \
+            -d "{\"entity_id\":\"$entity\"}" \
+            "$HA_URL/api/services/homeassistant/turn_off"
+
+    else
+        curl -X POST \
+            -H "Authorization: Bearer $HA_APIKEY" \
+            -H "Content-Type: application/json" \
+            -d "{\"entity_id\":\"$entity\",\"brightness_pct\":$2}" \
+            "$HA_URL/api/services/light/turn_on"
+    fi
+}