diff --git a/esphome/components/api/api_pb2.cpp b/esphome/components/api/api_pb2.cpp
index 6393a5b345..dc7dcacb23 100644
--- a/esphome/components/api/api_pb2.cpp
+++ b/esphome/components/api/api_pb2.cpp
@@ -224,11 +224,13 @@ uint8_t *ListEntitiesBinarySensorResponse::encode(ProtoWriteBuffer &buffer PROTO
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 10, this->object_id);
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->device_class);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->is_status_binary_sensor);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 7, this->disabled_by_default);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 8, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 66, this->icon);
 #endif
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 72);
@@ -286,10 +288,12 @@ uint8_t *ListEntitiesCoverResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 5, this->assumed_state);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->supports_position);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 7, this->supports_tilt);
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 8, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 66, this->device_class);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 9, this->disabled_by_default);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 10, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 82, this->icon);
 #endif
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 88);
@@ -396,7 +400,8 @@ uint8_t *ListEntitiesFanResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_D
   ProtoEncode::encode_int32(pos PROTO_ENCODE_DEBUG_ARG, 8, this->supported_speed_count);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 9, this->disabled_by_default);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 10, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 82, this->icon);
 #endif
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 88);
@@ -540,7 +545,8 @@ uint8_t *ListEntitiesLightResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE
   }
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 13, this->disabled_by_default);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 14, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 114, this->icon);
 #endif
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 120);
@@ -735,12 +741,15 @@ uint8_t *ListEntitiesSensorResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCOD
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 6, this->unit_of_measurement);
+  if (!this->unit_of_measurement.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 50, this->unit_of_measurement);
   ProtoEncode::encode_int32(pos PROTO_ENCODE_DEBUG_ARG, 7, this->accuracy_decimals);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 8, this->force_update);
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 9, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 74, this->device_class);
   if (this->state_class) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 80);
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, static_cast<uint8_t>(this->state_class));
@@ -803,7 +812,8 @@ uint8_t *ListEntitiesSwitchResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCOD
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->assumed_state);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 7, this->disabled_by_default);
@@ -811,7 +821,8 @@ uint8_t *ListEntitiesSwitchResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCOD
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 64);
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, static_cast<uint8_t>(this->entity_category));
   }
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 9, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 74, this->device_class);
 #ifdef USE_DEVICES
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 10, this->device_id);
 #endif
@@ -885,14 +896,16 @@ uint8_t *ListEntitiesTextSensorResponse::encode(ProtoWriteBuffer &buffer PROTO_E
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 56);
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, static_cast<uint8_t>(this->entity_category));
   }
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 8, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 66, this->device_class);
 #ifdef USE_DEVICES
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 9, this->device_id);
 #endif
@@ -1369,7 +1382,8 @@ uint8_t *ListEntitiesCameraResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCOD
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 5, this->disabled_by_default);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 6, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 50, this->icon);
 #endif
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 56);
@@ -1680,7 +1694,8 @@ uint8_t *ListEntitiesWaterHeaterResponse::encode(ProtoWriteBuffer &buffer PROTO_
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 4, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 34, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 5, this->disabled_by_default);
   if (this->entity_category) {
@@ -1800,7 +1815,8 @@ uint8_t *ListEntitiesNumberResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCOD
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_float(pos PROTO_ENCODE_DEBUG_ARG, 6, this->min_value);
   ProtoEncode::encode_float(pos PROTO_ENCODE_DEBUG_ARG, 7, this->max_value);
@@ -1810,12 +1826,14 @@ uint8_t *ListEntitiesNumberResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCOD
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 80);
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, static_cast<uint8_t>(this->entity_category));
   }
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 11, this->unit_of_measurement);
+  if (!this->unit_of_measurement.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 90, this->unit_of_measurement);
   if (this->mode) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 96);
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, static_cast<uint8_t>(this->mode));
   }
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 13, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 106, this->device_class);
 #ifdef USE_DEVICES
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 14, this->device_id);
 #endif
@@ -1895,7 +1913,8 @@ uint8_t *ListEntitiesSelectResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCOD
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   for (const char *it : *this->options) {
     ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 6, it, strlen(it), true);
@@ -1991,7 +2010,8 @@ uint8_t *ListEntitiesSirenResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   for (const char *it : *this->tones) {
@@ -2110,7 +2130,8 @@ uint8_t *ListEntitiesLockResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
@@ -2213,14 +2234,16 @@ uint8_t *ListEntitiesButtonResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCOD
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 56);
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, static_cast<uint8_t>(this->entity_category));
   }
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 8, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 66, this->device_class);
 #ifdef USE_DEVICES
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 9, this->device_id);
 #endif
@@ -2293,7 +2316,8 @@ uint8_t *ListEntitiesMediaPlayerResponse::encode(ProtoWriteBuffer &buffer PROTO_
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
@@ -3187,7 +3211,8 @@ uint8_t *ListEntitiesAlarmControlPanelResponse::encode(ProtoWriteBuffer &buffer
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
@@ -3285,7 +3310,8 @@ uint8_t *ListEntitiesTextResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
@@ -3384,7 +3410,8 @@ uint8_t *ListEntitiesDateResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
@@ -3474,7 +3501,8 @@ uint8_t *ListEntitiesTimeResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
@@ -3564,14 +3592,16 @@ uint8_t *ListEntitiesEventResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 56);
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, static_cast<uint8_t>(this->entity_category));
   }
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 8, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 66, this->device_class);
   for (const char *it : *this->event_types) {
     ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 9, it, strlen(it), true);
   }
@@ -3627,14 +3657,16 @@ uint8_t *ListEntitiesValveResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 56);
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, static_cast<uint8_t>(this->entity_category));
   }
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 8, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 66, this->device_class);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 9, this->assumed_state);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 10, this->supports_position);
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 11, this->supports_stop);
@@ -3724,7 +3756,8 @@ uint8_t *ListEntitiesDateTimeResponse::encode(ProtoWriteBuffer &buffer PROTO_ENC
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
@@ -3804,14 +3837,16 @@ uint8_t *ListEntitiesUpdateResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCOD
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 42, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   if (this->entity_category) {
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, 56);
     ProtoEncode::write_raw_byte(pos PROTO_ENCODE_DEBUG_ARG, static_cast<uint8_t>(this->entity_category));
   }
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 8, this->device_class);
+  if (!this->device_class.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 66, this->device_class);
 #ifdef USE_DEVICES
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 9, this->device_id);
 #endif
@@ -3961,7 +3996,8 @@ uint8_t *ListEntitiesInfraredResponse::encode(ProtoWriteBuffer &buffer PROTO_ENC
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 21, this->key);
   ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 26, this->name);
 #ifdef USE_ENTITY_ICON
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 4, this->icon);
+  if (!this->icon.empty())
+    ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, 34, this->icon);
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 5, this->disabled_by_default);
   if (this->entity_category) {
diff --git a/script/api_protobuf/api_protobuf.py b/script/api_protobuf/api_protobuf.py
index 39ab047e3b..22941e8494 100755
--- a/script/api_protobuf/api_protobuf.py
+++ b/script/api_protobuf/api_protobuf.py
@@ -1088,10 +1088,13 @@ class PointerToStringBufferType(PointerToBufferTypeBase):
     @property
     def encode_content(self) -> str:
         max_len = self.max_data_length
-        if max_len is not None and max_len < 128 and self.force:
+        if max_len is not None and max_len < 128:
             tag = self.calculate_tag()
             if tag < 128:
-                return f"ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, {tag}, this->{self.field_name});"
+                call = f"ProtoEncode::write_short_string(pos PROTO_ENCODE_DEBUG_ARG, {tag}, this->{self.field_name});"
+                if self.force:
+                    return call
+                return f"if (!this->{self.field_name}.empty())\n  {call}"
         if result := self._encode_bytes_with_precomputed_tag(
             f"this->{self.field_name}.c_str()",
             f"this->{self.field_name}.size()",