[core] Require explicit synchronous= for register_action (#14606)

esphome/automation.py

@@ -1,3 +1,5 @@
+import logging
+
 import esphome.codegen as cg
 import esphome.config_validation as cv
 from esphome.const import (
@@ -57,22 +59,41 @@ def maybe_conf(conf, *validators):
     return validate
 
 
+_LOGGER = logging.getLogger(__name__)
+
+
 def register_action(
     name: str,
     action_type: MockObjClass,
     schema: cv.Schema,
     *,
-    synchronous: bool = False,
+    synchronous: bool | None = None,
 ):
     """Register an action type.
 
-    Actions default to ``synchronous=False`` (safe default), meaning string
+    All callers must pass ``synchronous`` explicitly.
-    arguments use owning std::string to prevent dangling references.
 
-    Set ``synchronous=True`` only for actions that complete synchronously
+    ``synchronous=True`` — the action never defers ``play_next_()`` to a
-    and never store trigger arguments for later execution.  This allows
+    later point (callback, timer, or ``loop()``).  Trigger arguments are
-    the code generator to use non-owning StringRef for zero-copy access.
+    only used during the initial call, so string args can use non-owning
+    StringRef for zero-copy access.
+
+    ``synchronous=False`` — the action defers ``play_next_()`` via a
+    callback, timer, or ``Component::loop()``.  Trigger arguments must
+    outlive the initial call, so string args use owning std::string to
+    prevent dangling references.
     """
+    if synchronous is None:
+        _LOGGER.warning(
+            "register_action('%s', ...) is missing the synchronous= parameter. "
+            "Defaulting to synchronous=False (safe but prevents StringRef "
+            "optimization). Check the C++ class: use synchronous=False if "
+            "play_next_() is deferred to a callback, timer, or loop(); "
+            "use synchronous=True if play_next_() always runs before the "
+            "initial play/play_complex call returns",
+            name,
+        )
+        synchronous = False
     return ACTION_REGISTRY.register(name, action_type, schema, synchronous=synchronous)
 
 
@@ -353,6 +374,7 @@ async def component_is_idle_condition_to_code(
     "delay",
     DelayAction,
     cv.templatable(cv.positive_time_period_milliseconds),
+    synchronous=False,
 )
 async def delay_action_to_code(
     config: ConfigType,
@@ -465,7 +487,7 @@ _validate_wait_until = cv.maybe_simple_value(
 )
 
 
-@register_action("wait_until", WaitUntilAction, _validate_wait_until)
+@register_action("wait_until", WaitUntilAction, _validate_wait_until, synchronous=False)
 async def wait_until_action_to_code(
     config: ConfigType,
     action_id: ID,
@@ -611,7 +633,7 @@ def has_non_synchronous_actions(actions: ConfigType) -> bool:
 
     Non-synchronous actions (delay, wait_until, script.wait, etc.) store
     trigger args for later execution, making non-owning types like StringRef
-    unsafe.  Actions that haven't been audited default to non-synchronous.
+    unsafe.
     """
     if isinstance(actions, list):
         return any(has_non_synchronous_actions(item) for item in actions)

esphome/components/ags10/sensor.py

@@ -92,6 +92,7 @@ AGS10_NEW_I2C_ADDRESS_SCHEMA = cv.maybe_simple_value(
     "ags10.new_i2c_address",
     AGS10NewI2cAddressAction,
     AGS10_NEW_I2C_ADDRESS_SCHEMA,
+    synchronous=True,
 )
 async def ags10newi2caddress_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -121,6 +122,7 @@ AGS10_SET_ZERO_POINT_SCHEMA = cv.Schema(
     "ags10.set_zero_point",
     AGS10SetZeroPointAction,
     AGS10_SET_ZERO_POINT_SCHEMA,
+    synchronous=True,
 )
 async def ags10setzeropoint_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/aic3204/audio_dac.py

@@ -34,7 +34,10 @@ SET_AUTO_MUTE_ACTION_SCHEMA = cv.maybe_simple_value(
 
 
 @automation.register_action(
-    "aic3204.set_auto_mute_mode", SetAutoMuteAction, SET_AUTO_MUTE_ACTION_SCHEMA
+    "aic3204.set_auto_mute_mode",
+    SetAutoMuteAction,
+    SET_AUTO_MUTE_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def aic3204_set_volume_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/alarm_control_panel/__init__.py

@@ -243,7 +243,10 @@ async def new_alarm_control_panel(config, *args):
 
 
 @automation.register_action(
-    "alarm_control_panel.arm_away", ArmAwayAction, ALARM_CONTROL_PANEL_ACTION_SCHEMA
+    "alarm_control_panel.arm_away",
+    ArmAwayAction,
+    ALARM_CONTROL_PANEL_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def alarm_action_arm_away_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -255,7 +258,10 @@ async def alarm_action_arm_away_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "alarm_control_panel.arm_home", ArmHomeAction, ALARM_CONTROL_PANEL_ACTION_SCHEMA
+    "alarm_control_panel.arm_home",
+    ArmHomeAction,
+    ALARM_CONTROL_PANEL_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def alarm_action_arm_home_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -267,7 +273,10 @@ async def alarm_action_arm_home_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "alarm_control_panel.arm_night", ArmNightAction, ALARM_CONTROL_PANEL_ACTION_SCHEMA
+    "alarm_control_panel.arm_night",
+    ArmNightAction,
+    ALARM_CONTROL_PANEL_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def alarm_action_arm_night_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -279,7 +288,10 @@ async def alarm_action_arm_night_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "alarm_control_panel.disarm", DisarmAction, ALARM_CONTROL_PANEL_ACTION_SCHEMA
+    "alarm_control_panel.disarm",
+    DisarmAction,
+    ALARM_CONTROL_PANEL_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def alarm_action_disarm_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -291,7 +303,10 @@ async def alarm_action_disarm_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "alarm_control_panel.pending", PendingAction, ALARM_CONTROL_PANEL_ACTION_SCHEMA
+    "alarm_control_panel.pending",
+    PendingAction,
+    ALARM_CONTROL_PANEL_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def alarm_action_pending_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -299,7 +314,10 @@ async def alarm_action_pending_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "alarm_control_panel.triggered", TriggeredAction, ALARM_CONTROL_PANEL_ACTION_SCHEMA
+    "alarm_control_panel.triggered",
+    TriggeredAction,
+    ALARM_CONTROL_PANEL_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def alarm_action_trigger_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -307,7 +325,10 @@ async def alarm_action_trigger_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "alarm_control_panel.chime", ChimeAction, ALARM_CONTROL_PANEL_ACTION_SCHEMA
+    "alarm_control_panel.chime",
+    ChimeAction,
+    ALARM_CONTROL_PANEL_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def alarm_action_chime_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -315,7 +336,10 @@ async def alarm_action_chime_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "alarm_control_panel.ready", ReadyAction, ALARM_CONTROL_PANEL_ACTION_SCHEMA
+    "alarm_control_panel.ready",
+    ReadyAction,
+    ALARM_CONTROL_PANEL_ACTION_SCHEMA,
+    synchronous=True,
 )
 @automation.register_condition(
     "alarm_control_panel.ready",

esphome/components/animation/__init__.py

@@ -69,9 +69,15 @@ SET_FRAME_SCHEMA = cv.Schema(
 )
 
 
-@automation.register_action("animation.next_frame", NextFrameAction, NEXT_FRAME_SCHEMA)
+@automation.register_action(
-@automation.register_action("animation.prev_frame", PrevFrameAction, PREV_FRAME_SCHEMA)
+    "animation.next_frame", NextFrameAction, NEXT_FRAME_SCHEMA, synchronous=True
-@automation.register_action("animation.set_frame", SetFrameAction, SET_FRAME_SCHEMA)
+)
+@automation.register_action(
+    "animation.prev_frame", PrevFrameAction, PREV_FRAME_SCHEMA, synchronous=True
+)
+@automation.register_action(
+    "animation.set_frame", SetFrameAction, SET_FRAME_SCHEMA, synchronous=True
+)
 async def animation_action_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     var = cg.new_Pvariable(action_id, template_arg, paren)

esphome/components/api/__init__.py

@@ -712,6 +712,7 @@ API_RESPOND_ACTION_SCHEMA = cv.All(
     "api.respond",
     APIRespondAction,
     API_RESPOND_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def api_respond_to_code(
     config: ConfigType,

esphome/components/at581x/__init__.py

@@ -89,6 +89,7 @@ AT581XSettingsAction = at581x_ns.class_("AT581XSettingsAction", automation.Actio
             cv.Required(CONF_ID): cv.use_id(AT581XComponent),
         }
     ),
+    synchronous=True,
 )
 async def at581x_reset_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -160,6 +161,7 @@ RADAR_SETTINGS_SCHEMA = cv.Schema(
     "at581x.settings",
     AT581XSettingsAction,
     RADAR_SETTINGS_SCHEMA,
+    synchronous=True,
 )
 async def at581x_settings_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/audio_adc/__init__.py

@@ -23,7 +23,10 @@ SET_MIC_GAIN_ACTION_SCHEMA = cv.maybe_simple_value(
 
 
 @automation.register_action(
-    "audio_adc.set_mic_gain", SetMicGainAction, SET_MIC_GAIN_ACTION_SCHEMA
+    "audio_adc.set_mic_gain",
+    SetMicGainAction,
+    SET_MIC_GAIN_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def audio_adc_set_mic_gain_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/audio_dac/__init__.py

@@ -31,15 +31,22 @@ SET_VOLUME_ACTION_SCHEMA = cv.maybe_simple_value(
 )
 
 
-@automation.register_action("audio_dac.mute_off", MuteOffAction, MUTE_ACTION_SCHEMA)
+@automation.register_action(
-@automation.register_action("audio_dac.mute_on", MuteOnAction, MUTE_ACTION_SCHEMA)
+    "audio_dac.mute_off", MuteOffAction, MUTE_ACTION_SCHEMA, synchronous=True
+)
+@automation.register_action(
+    "audio_dac.mute_on", MuteOnAction, MUTE_ACTION_SCHEMA, synchronous=True
+)
 async def audio_dac_mute_action_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, paren)
 
 
 @automation.register_action(
-    "audio_dac.set_volume", SetVolumeAction, SET_VOLUME_ACTION_SCHEMA
+    "audio_dac.set_volume",
+    SetVolumeAction,
+    SET_VOLUME_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def audio_dac_set_volume_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/binary_sensor/__init__.py

@@ -685,6 +685,7 @@ async def to_code(config):
         },
         key=CONF_ID,
     ),
+    synchronous=True,
 )
 async def binary_sensor_invalidate_state_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/bl0906/sensor.py

@@ -143,6 +143,7 @@ FINAL_VALIDATE_SCHEMA = uart.final_validate_device_schema(
             cv.Required(CONF_ID): cv.use_id(BL0906),
         }
     ),
+    synchronous=True,
 )
 async def reset_energy_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/ble_client/__init__.py

@@ -172,7 +172,10 @@ BLE_REMOVE_BOND_ACTION_SCHEMA = cv.Schema(
 
 
 @automation.register_action(
-    "ble_client.disconnect", BLEDisconnectAction, BLE_CONNECT_ACTION_SCHEMA
+    "ble_client.disconnect",
+    BLEDisconnectAction,
+    BLE_CONNECT_ACTION_SCHEMA,
+    synchronous=False,
 )
 async def ble_disconnect_to_code(config, action_id, template_arg, args):
     parent = await cg.get_variable(config[CONF_ID])
@@ -180,7 +183,10 @@ async def ble_disconnect_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "ble_client.connect", BLEConnectAction, BLE_CONNECT_ACTION_SCHEMA
+    "ble_client.connect",
+    BLEConnectAction,
+    BLE_CONNECT_ACTION_SCHEMA,
+    synchronous=False,
 )
 async def ble_connect_to_code(config, action_id, template_arg, args):
     parent = await cg.get_variable(config[CONF_ID])
@@ -188,7 +194,10 @@ async def ble_connect_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "ble_client.ble_write", BLEWriteAction, BLE_WRITE_ACTION_SCHEMA
+    "ble_client.ble_write",
+    BLEWriteAction,
+    BLE_WRITE_ACTION_SCHEMA,
+    synchronous=False,
 )
 async def ble_write_to_code(config, action_id, template_arg, args):
     parent = await cg.get_variable(config[CONF_ID])
@@ -247,6 +256,7 @@ async def ble_write_to_code(config, action_id, template_arg, args):
     "ble_client.numeric_comparison_reply",
     BLENumericComparisonReplyAction,
     BLE_NUMERIC_COMPARISON_REPLY_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def numeric_comparison_reply_to_code(config, action_id, template_arg, args):
     parent = await cg.get_variable(config[CONF_ID])
@@ -263,7 +273,10 @@ async def numeric_comparison_reply_to_code(config, action_id, template_arg, args
 
 
 @automation.register_action(
-    "ble_client.passkey_reply", BLEPasskeyReplyAction, BLE_PASSKEY_REPLY_ACTION_SCHEMA
+    "ble_client.passkey_reply",
+    BLEPasskeyReplyAction,
+    BLE_PASSKEY_REPLY_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def passkey_reply_to_code(config, action_id, template_arg, args):
     parent = await cg.get_variable(config[CONF_ID])
@@ -283,6 +296,7 @@ async def passkey_reply_to_code(config, action_id, template_arg, args):
     "ble_client.remove_bond",
     BLERemoveBondAction,
     BLE_REMOVE_BOND_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def remove_bond_to_code(config, action_id, template_arg, args):
     parent = await cg.get_variable(config[CONF_ID])

esphome/components/bm8563/time.py

@@ -33,6 +33,7 @@ CONFIG_SCHEMA = (
             cv.GenerateID(): cv.use_id(BM8563),
         }
     ),
+    synchronous=True,
 )
 async def bm8563_write_time_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -49,6 +50,7 @@ async def bm8563_write_time_to_code(config, action_id, template_arg, args):
             cv.Required(CONF_DURATION): cv.templatable(cv.positive_time_period_seconds),
         }
     ),
+    synchronous=True,
 )
 async def bm8563_start_timer_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -66,6 +68,7 @@ async def bm8563_start_timer_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(BM8563),
         }
     ),
+    synchronous=True,
 )
 async def bm8563_read_time_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/canbus/__init__.py

@@ -155,6 +155,7 @@ async def register_canbus(var, config):
         validate_id,
         key=CONF_DATA,
     ),
+    synchronous=True,
 )
 async def canbus_action_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/cc1101/__init__.py

@@ -287,10 +287,18 @@ CC1101_ACTION_SCHEMA = cv.Schema(
 )
 
 
-@automation.register_action("cc1101.begin_tx", BeginTxAction, CC1101_ACTION_SCHEMA)
+@automation.register_action(
-@automation.register_action("cc1101.begin_rx", BeginRxAction, CC1101_ACTION_SCHEMA)
+    "cc1101.begin_tx", BeginTxAction, CC1101_ACTION_SCHEMA, synchronous=True
-@automation.register_action("cc1101.reset", ResetAction, CC1101_ACTION_SCHEMA)
+)
-@automation.register_action("cc1101.set_idle", SetIdleAction, CC1101_ACTION_SCHEMA)
+@automation.register_action(
+    "cc1101.begin_rx", BeginRxAction, CC1101_ACTION_SCHEMA, synchronous=True
+)
+@automation.register_action(
+    "cc1101.reset", ResetAction, CC1101_ACTION_SCHEMA, synchronous=True
+)
+@automation.register_action(
+    "cc1101.set_idle", SetIdleAction, CC1101_ACTION_SCHEMA, synchronous=True
+)
 async def cc1101_action_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
     await cg.register_parented(var, config[CONF_ID])
@@ -317,7 +325,10 @@ SEND_PACKET_ACTION_SCHEMA = cv.maybe_simple_value(
 
 
 @automation.register_action(
-    "cc1101.send_packet", SendPacketAction, SEND_PACKET_ACTION_SCHEMA
+    "cc1101.send_packet",
+    SendPacketAction,
+    SEND_PACKET_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def send_packet_action_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -419,9 +430,9 @@ def _register_setter_actions():
                 cg.add(getattr(var, _setter)(_map[data] if _map else data))
             return var
 
-        automation.register_action(f"cc1101.{setter_name}", action_cls, schema)(
+        automation.register_action(
-            _setter_action_to_code
+            f"cc1101.{setter_name}", action_cls, schema, synchronous=True
-        )
+        )(_setter_action_to_code)
 
 
 _register_setter_actions()

esphome/components/climate/__init__.py

@@ -476,7 +476,10 @@ CLIMATE_CONTROL_ACTION_SCHEMA = cv.Schema(
 
 
 @automation.register_action(
-    "climate.control", ControlAction, CLIMATE_CONTROL_ACTION_SCHEMA
+    "climate.control",
+    ControlAction,
+    CLIMATE_CONTROL_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def climate_control_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/cm1106/sensor.py

@@ -65,6 +65,7 @@ CALIBRATION_ACTION_SCHEMA = maybe_simple_id(
     "cm1106.calibrate_zero",
     CM1106CalibrateZeroAction,
     CALIBRATION_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def cm1106_calibration_to_code(config, action_id, template_arg, args) -> None:
     """Service code generation entry point."""

esphome/components/cs5460a/sensor.py

@@ -132,6 +132,7 @@ async def to_code(config):
             cv.Required(CONF_ID): cv.use_id(CS5460AComponent),
         }
     ),
+    synchronous=True,
 )
 async def restart_action_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/datetime/__init__.py

@@ -187,6 +187,7 @@ async def to_code(config):
             ),
         }
     ),
+    synchronous=True,
 )
 async def datetime_date_set_to_code(config, action_id, template_arg, args):
     action_var = cg.new_Pvariable(action_id, template_arg)
@@ -218,6 +219,7 @@ async def datetime_date_set_to_code(config, action_id, template_arg, args):
             ),
         }
     ),
+    synchronous=True,
 )
 async def datetime_time_set_to_code(config, action_id, template_arg, args):
     action_var = cg.new_Pvariable(action_id, template_arg)
@@ -249,6 +251,7 @@ async def datetime_time_set_to_code(config, action_id, template_arg, args):
             ),
         },
     ),
+    synchronous=True,
 )
 async def datetime_datetime_set_to_code(config, action_id, template_arg, args):
     action_var = cg.new_Pvariable(action_id, template_arg)

esphome/components/deep_sleep/__init__.py

@@ -405,7 +405,10 @@ DEEP_SLEEP_ENTER_SCHEMA = cv.All(
 
 
 @automation.register_action(
-    "deep_sleep.enter", EnterDeepSleepAction, DEEP_SLEEP_ENTER_SCHEMA
+    "deep_sleep.enter",
+    EnterDeepSleepAction,
+    DEEP_SLEEP_ENTER_SCHEMA,
+    synchronous=True,
 )
 async def deep_sleep_enter_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -428,11 +431,13 @@ async def deep_sleep_enter_to_code(config, action_id, template_arg, args):
     "deep_sleep.prevent",
     PreventDeepSleepAction,
     automation.maybe_simple_id(DEEP_SLEEP_ACTION_SCHEMA),
+    synchronous=True,
 )
 @automation.register_action(
     "deep_sleep.allow",
     AllowDeepSleepAction,
     automation.maybe_simple_id(DEEP_SLEEP_ACTION_SCHEMA),
+    synchronous=True,
 )
 async def deep_sleep_action_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/dfplayer/__init__.py

@@ -91,6 +91,7 @@ async def to_code(config):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_next_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -106,6 +107,7 @@ async def dfplayer_next_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_previous_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -123,6 +125,7 @@ async def dfplayer_previous_to_code(config, action_id, template_arg, args):
         },
         key=CONF_FILE,
     ),
+    synchronous=True,
 )
 async def dfplayer_play_mp3_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -143,6 +146,7 @@ async def dfplayer_play_mp3_to_code(config, action_id, template_arg, args):
         },
         key=CONF_FILE,
     ),
+    synchronous=True,
 )
 async def dfplayer_play_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -166,6 +170,7 @@ async def dfplayer_play_to_code(config, action_id, template_arg, args):
             cv.Optional(CONF_LOOP): cv.templatable(cv.boolean),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_play_folder_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -191,6 +196,7 @@ async def dfplayer_play_folder_to_code(config, action_id, template_arg, args):
         },
         key=CONF_DEVICE,
     ),
+    synchronous=True,
 )
 async def dfplayer_set_device_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -210,6 +216,7 @@ async def dfplayer_set_device_to_code(config, action_id, template_arg, args):
         },
         key=CONF_VOLUME,
     ),
+    synchronous=True,
 )
 async def dfplayer_set_volume_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -227,6 +234,7 @@ async def dfplayer_set_volume_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_volume_up_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -242,6 +250,7 @@ async def dfplayer_volume_up_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_volume_down_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -259,6 +268,7 @@ async def dfplayer_volume_down_to_code(config, action_id, template_arg, args):
         },
         key=CONF_EQ_PRESET,
     ),
+    synchronous=True,
 )
 async def dfplayer_set_eq_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -276,6 +286,7 @@ async def dfplayer_set_eq_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_sleep_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -291,6 +302,7 @@ async def dfplayer_sleep_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_reset_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -306,6 +318,7 @@ async def dfplayer_reset_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_start_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -321,6 +334,7 @@ async def dfplayer_start_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_pause_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -336,6 +350,7 @@ async def dfplayer_pause_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_stop_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -351,6 +366,7 @@ async def dfplayer_stop_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DFPlayer),
         }
     ),
+    synchronous=True,
 )
 async def dfplayer_random_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/dfrobot_sen0395/__init__.py

@@ -52,6 +52,7 @@ async def to_code(config):
             cv.GenerateID(): cv.use_id(DfrobotSen0395Component),
         }
     ),
+    synchronous=True,
 )
 async def dfrobot_sen0395_reset_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -151,6 +152,7 @@ MMWAVE_SETTINGS_SCHEMA = cv.Schema(
     "dfrobot_sen0395.settings",
     DfrobotSen0395SettingsAction,
     MMWAVE_SETTINGS_SCHEMA,
+    synchronous=True,
 )
 async def dfrobot_sen0395_settings_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/display/__init__.py

@@ -159,6 +159,7 @@ async def register_display(var, config):
             cv.Required(CONF_ID): cv.templatable(cv.use_id(DisplayPage)),
         }
     ),
+    synchronous=True,
 )
 async def display_page_show_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -179,6 +180,7 @@ async def display_page_show_to_code(config, action_id, template_arg, args):
             cv.GenerateID(CONF_ID): cv.templatable(cv.use_id(Display)),
         }
     ),
+    synchronous=True,
 )
 async def display_page_show_next_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -193,6 +195,7 @@ async def display_page_show_next_to_code(config, action_id, template_arg, args):
             cv.GenerateID(CONF_ID): cv.templatable(cv.use_id(Display)),
         }
     ),
+    synchronous=True,
 )
 async def display_page_show_previous_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/display_menu_base/__init__.py

@@ -294,50 +294,67 @@ MENU_ACTION_SCHEMA = maybe_simple_id(
 )
 
 
-@automation.register_action("display_menu.up", UpAction, MENU_ACTION_SCHEMA)
+@automation.register_action(
+    "display_menu.up", UpAction, MENU_ACTION_SCHEMA, synchronous=True
+)
 async def menu_up_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, paren)
 
 
-@automation.register_action("display_menu.down", DownAction, MENU_ACTION_SCHEMA)
+@automation.register_action(
+    "display_menu.down", DownAction, MENU_ACTION_SCHEMA, synchronous=True
+)
 async def menu_down_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, paren)
 
 
-@automation.register_action("display_menu.left", LeftAction, MENU_ACTION_SCHEMA)
+@automation.register_action(
+    "display_menu.left", LeftAction, MENU_ACTION_SCHEMA, synchronous=True
+)
 async def menu_left_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, paren)
 
 
-@automation.register_action("display_menu.right", RightAction, MENU_ACTION_SCHEMA)
+@automation.register_action(
+    "display_menu.right", RightAction, MENU_ACTION_SCHEMA, synchronous=True
+)
 async def menu_right_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, paren)
 
 
-@automation.register_action("display_menu.enter", EnterAction, MENU_ACTION_SCHEMA)
+@automation.register_action(
+    "display_menu.enter", EnterAction, MENU_ACTION_SCHEMA, synchronous=True
+)
 async def menu_enter_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, paren)
 
 
-@automation.register_action("display_menu.show", ShowAction, MENU_ACTION_SCHEMA)
+@automation.register_action(
+    "display_menu.show", ShowAction, MENU_ACTION_SCHEMA, synchronous=True
+)
 async def menu_show_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, paren)
 
 
-@automation.register_action("display_menu.hide", HideAction, MENU_ACTION_SCHEMA)
+@automation.register_action(
+    "display_menu.hide", HideAction, MENU_ACTION_SCHEMA, synchronous=True
+)
 async def menu_hide_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, paren)
 
 
 @automation.register_action(
-    "display_menu.show_main", ShowMainAction, MENU_ACTION_SCHEMA
+    "display_menu.show_main",
+    ShowMainAction,
+    MENU_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def menu_show_main_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/ds1307/time.py

@@ -27,6 +27,7 @@ CONFIG_SCHEMA = time.TIME_SCHEMA.extend(
             cv.GenerateID(): cv.use_id(DS1307Component),
         }
     ),
+    synchronous=True,
 )
 async def ds1307_write_time_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -42,6 +43,7 @@ async def ds1307_write_time_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(DS1307Component),
         }
     ),
+    synchronous=True,
 )
 async def ds1307_read_time_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/duty_time/sensor.py

@@ -90,21 +90,27 @@ DUTY_TIME_ID_SCHEMA = maybe_simple_id(
 )
 
 
-@register_action("sensor.duty_time.start", StartAction, DUTY_TIME_ID_SCHEMA)
+@register_action(
+    "sensor.duty_time.start", StartAction, DUTY_TIME_ID_SCHEMA, synchronous=True
+)
 async def sensor_runtime_start_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
     await cg.register_parented(var, config[CONF_ID])
     return var
 
 
-@register_action("sensor.duty_time.stop", StopAction, DUTY_TIME_ID_SCHEMA)
+@register_action(
+    "sensor.duty_time.stop", StopAction, DUTY_TIME_ID_SCHEMA, synchronous=True
+)
 async def sensor_runtime_stop_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
     await cg.register_parented(var, config[CONF_ID])
     return var
 
 
-@register_action("sensor.duty_time.reset", ResetAction, DUTY_TIME_ID_SCHEMA)
+@register_action(
+    "sensor.duty_time.reset", ResetAction, DUTY_TIME_ID_SCHEMA, synchronous=True
+)
 async def sensor_runtime_reset_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
     await cg.register_parented(var, config[CONF_ID])

esphome/components/esp32_ble/__init__.py

@@ -604,11 +604,15 @@ async def ble_enabled_to_code(config, condition_id, template_arg, args):
     return cg.new_Pvariable(condition_id, template_arg)
 
 
-@automation.register_action("ble.enable", BLEEnableAction, cv.Schema({}))
+@automation.register_action(
+    "ble.enable", BLEEnableAction, cv.Schema({}), synchronous=True
+)
 async def ble_enable_to_code(config, action_id, template_arg, args):
     return cg.new_Pvariable(action_id, template_arg)
 
 
-@automation.register_action("ble.disable", BLEDisableAction, cv.Schema({}))
+@automation.register_action(
+    "ble.disable", BLEDisableAction, cv.Schema({}), synchronous=True
+)
 async def ble_disable_to_code(config, action_id, template_arg, args):
     return cg.new_Pvariable(action_id, template_arg)

esphome/components/esp32_ble_server/__init__.py

@@ -622,6 +622,7 @@ async def to_code(config):
         ),
         validate_set_value_action,
     ),
+    synchronous=True,
 )
 async def ble_server_characteristic_set_value(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -641,6 +642,7 @@ async def ble_server_characteristic_set_value(config, action_id, template_arg, a
             cv.Required(CONF_VALUE): value_schema(),
         }
     ),
+    synchronous=True,
 )
 async def ble_server_descriptor_set_value(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -662,6 +664,7 @@ async def ble_server_descriptor_set_value(config, action_id, template_arg, args)
         ),
         validate_notify_action,
     ),
+    synchronous=True,
 )
 async def ble_server_characteristic_notify(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/esp32_ble_tracker/__init__.py

@@ -373,6 +373,7 @@ ESP32_BLE_START_SCAN_ACTION_SCHEMA = cv.Schema(
     "esp32_ble_tracker.start_scan",
     ESP32BLEStartScanAction,
     ESP32_BLE_START_SCAN_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def esp32_ble_tracker_start_scan_action_to_code(
     config, action_id, template_arg, args
@@ -396,6 +397,7 @@ ESP32_BLE_STOP_SCAN_ACTION_SCHEMA = automation.maybe_simple_id(
     "esp32_ble_tracker.stop_scan",
     ESP32BLEStopScanAction,
     ESP32_BLE_STOP_SCAN_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def esp32_ble_tracker_stop_scan_action_to_code(
     config, action_id, template_arg, args

esphome/components/esp8266_pwm/output.py

@@ -57,6 +57,7 @@ async def to_code(config) -> None:
             cv.Required(CONF_FREQUENCY): cv.templatable(validate_frequency),
         }
     ),
+    synchronous=True,
 )
 async def esp8266_set_frequency_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/esp_ldo/__init__.py

@@ -129,6 +129,7 @@ def adjusted_ldo_id(value):
             ),
         }
     ),
+    synchronous=True,
 )
 async def ldo_voltage_adjust_to_code(config, action_id, template_arg, args):
     parent = await cg.get_variable(config[CONF_ID])

esphome/components/espnow/__init__.py

@@ -220,6 +220,7 @@ SEND_SCHEMA.add_extra(_validate_send_action)
     "espnow.send",
     SendAction,
     SEND_SCHEMA,
+    synchronous=False,
 )
 @automation.register_action(
     "espnow.broadcast",
@@ -232,6 +233,7 @@ SEND_SCHEMA.add_extra(_validate_send_action)
         ),
         key=CONF_DATA,
     ),
+    synchronous=False,
 )
 async def send_action(
     config: ConfigType,
@@ -271,6 +273,7 @@ async def send_action(
         PEER_SCHEMA,
         key=CONF_ADDRESS,
     ),
+    synchronous=True,
 )
 @automation.register_action(
     "espnow.peer.delete",
@@ -279,6 +282,7 @@ async def send_action(
         PEER_SCHEMA,
         key=CONF_ADDRESS,
     ),
+    synchronous=True,
 )
 async def peer_action(
     config: ConfigType,
@@ -303,6 +307,7 @@ async def peer_action(
         },
         key=CONF_CHANNEL,
     ),
+    synchronous=True,
 )
 async def channel_action(
     config: ConfigType,

esphome/components/event/__init__.py

@@ -129,7 +129,9 @@ TRIGGER_EVENT_SCHEMA = cv.Schema(
 )
 
 
-@automation.register_action("event.trigger", TriggerEventAction, TRIGGER_EVENT_SCHEMA)
+@automation.register_action(
+    "event.trigger", TriggerEventAction, TRIGGER_EVENT_SCHEMA, synchronous=True
+)
 async def event_fire_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
     await cg.register_parented(var, config[CONF_ID])

esphome/components/ezo_pmp/__init__.py

@@ -81,7 +81,10 @@ EzoPMPArbitraryCommandAction = ezo_pmp_ns.class_(
 
 
 @automation.register_action(
-    "ezo_pmp.find", EzoPMPFindAction, EZO_PMP_NO_ARGS_ACTION_SCHEMA
+    "ezo_pmp.find",
+    EzoPMPFindAction,
+    EZO_PMP_NO_ARGS_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_find_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -92,6 +95,7 @@ async def ezo_pmp_find_to_code(config, action_id, template_arg, args):
     "ezo_pmp.dose_continuously",
     EzoPMPDoseContinuouslyAction,
     EZO_PMP_NO_ARGS_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_dose_continuously_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -102,6 +106,7 @@ async def ezo_pmp_dose_continuously_to_code(config, action_id, template_arg, arg
     "ezo_pmp.clear_total_volume_dosed",
     EzoPMPClearTotalVolumeDispensedAction,
     EZO_PMP_NO_ARGS_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_clear_total_volume_dosed_to_code(
     config, action_id, template_arg, args
@@ -114,6 +119,7 @@ async def ezo_pmp_clear_total_volume_dosed_to_code(
     "ezo_pmp.clear_calibration",
     EzoPMPClearCalibrationAction,
     EZO_PMP_NO_ARGS_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_clear_calibration_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -121,7 +127,10 @@ async def ezo_pmp_clear_calibration_to_code(config, action_id, template_arg, arg
 
 
 @automation.register_action(
-    "ezo_pmp.pause_dosing", EzoPMPPauseDosingAction, EZO_PMP_NO_ARGS_ACTION_SCHEMA
+    "ezo_pmp.pause_dosing",
+    EzoPMPPauseDosingAction,
+    EZO_PMP_NO_ARGS_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_pause_dosing_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -129,7 +138,10 @@ async def ezo_pmp_pause_dosing_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "ezo_pmp.stop_dosing", EzoPMPStopDosingAction, EZO_PMP_NO_ARGS_ACTION_SCHEMA
+    "ezo_pmp.stop_dosing",
+    EzoPMPStopDosingAction,
+    EZO_PMP_NO_ARGS_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_stop_dosing_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -149,7 +161,10 @@ EZO_PMP_DOSE_VOLUME_ACTION_SCHEMA = cv.All(
 
 
 @automation.register_action(
-    "ezo_pmp.dose_volume", EzoPMPDoseVolumeAction, EZO_PMP_DOSE_VOLUME_ACTION_SCHEMA
+    "ezo_pmp.dose_volume",
+    EzoPMPDoseVolumeAction,
+    EZO_PMP_DOSE_VOLUME_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_dose_volume_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -178,6 +193,7 @@ EZO_PMP_DOSE_VOLUME_OVER_TIME_ACTION_SCHEMA = cv.All(
     "ezo_pmp.dose_volume_over_time",
     EzoPMPDoseVolumeOverTimeAction,
     EZO_PMP_DOSE_VOLUME_OVER_TIME_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_dose_volume_over_time_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -209,6 +225,7 @@ EZO_PMP_DOSE_WITH_CONSTANT_FLOW_RATE_ACTION_SCHEMA = cv.All(
     "ezo_pmp.dose_with_constant_flow_rate",
     EzoPMPDoseWithConstantFlowRateAction,
     EZO_PMP_DOSE_WITH_CONSTANT_FLOW_RATE_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_dose_with_constant_flow_rate_to_code(
     config, action_id, template_arg, args
@@ -239,6 +256,7 @@ EZO_PMP_SET_CALIBRATION_VOLUME_ACTION_SCHEMA = cv.All(
     "ezo_pmp.set_calibration_volume",
     EzoPMPSetCalibrationVolumeAction,
     EZO_PMP_SET_CALIBRATION_VOLUME_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_set_calibration_volume_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -262,6 +280,7 @@ EZO_PMP_CHANGE_I2C_ADDRESS_ACTION_SCHEMA = cv.All(
     "ezo_pmp.change_i2c_address",
     EzoPMPChangeI2CAddressAction,
     EZO_PMP_CHANGE_I2C_ADDRESS_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_change_i2c_address_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -285,6 +304,7 @@ EZO_PMP_ARBITRARY_COMMAND_ACTION_SCHEMA = cv.All(
     "ezo_pmp.arbitrary_command",
     EzoPMPArbitraryCommandAction,
     EZO_PMP_ARBITRARY_COMMAND_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ezo_pmp_arbitrary_command_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/fan/__init__.py

@@ -365,6 +365,7 @@ async def fan_turn_on_to_code(config, action_id, template_arg, args):
             cv.Optional(CONF_OFF_SPEED_CYCLE, default=True): cv.boolean,
         }
     ),
+    synchronous=True,
 )
 async def fan_cycle_speed_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/fingerprint_grow/__init__.py

@@ -261,6 +261,7 @@ async def to_code(config):
         },
         key=CONF_FINGER_ID,
     ),
+    synchronous=True,
 )
 async def fingerprint_grow_enroll_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -282,6 +283,7 @@ async def fingerprint_grow_enroll_to_code(config, action_id, template_arg, args)
             cv.GenerateID(): cv.use_id(FingerprintGrowComponent),
         }
     ),
+    synchronous=True,
 )
 async def fingerprint_grow_cancel_enroll_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -299,6 +301,7 @@ async def fingerprint_grow_cancel_enroll_to_code(config, action_id, template_arg
         },
         key=CONF_FINGER_ID,
     ),
+    synchronous=True,
 )
 async def fingerprint_grow_delete_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -317,6 +320,7 @@ async def fingerprint_grow_delete_to_code(config, action_id, template_arg, args)
             cv.GenerateID(): cv.use_id(FingerprintGrowComponent),
         }
     ),
+    synchronous=True,
 )
 async def fingerprint_grow_delete_all_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -337,6 +341,7 @@ FINGERPRINT_GROW_LED_CONTROL_ACTION_SCHEMA = cv.maybe_simple_value(
     "fingerprint_grow.led_control",
     LEDControlAction,
     FINGERPRINT_GROW_LED_CONTROL_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def fingerprint_grow_led_control_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -359,6 +364,7 @@ async def fingerprint_grow_led_control_to_code(config, action_id, template_arg,
             cv.Required(CONF_COUNT): cv.templatable(cv.uint8_t),
         }
     ),
+    synchronous=True,
 )
 async def fingerprint_grow_aura_led_control_to_code(
     config, action_id, template_arg, args

esphome/components/grove_tb6612fng/__init__.py

@@ -72,6 +72,7 @@ async def to_code(config):
             cv.Required(CONF_DIRECTION): cv.enum(DIRECTION_TYPE, upper=True),
         }
     ),
+    synchronous=True,
 )
 async def grove_tb6612fng_run_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -96,6 +97,7 @@ async def grove_tb6612fng_run_to_code(config, action_id, template_arg, args):
             cv.Required(CONF_CHANNEL): cv.templatable(cv.int_range(min=0, max=1)),
         }
     ),
+    synchronous=True,
 )
 async def grove_tb6612fng_break_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -115,6 +117,7 @@ async def grove_tb6612fng_break_to_code(config, action_id, template_arg, args):
             cv.Required(CONF_CHANNEL): cv.templatable(cv.int_range(min=0, max=1)),
         }
     ),
+    synchronous=True,
 )
 async def grove_tb6612fng_stop_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -133,6 +136,7 @@ async def grove_tb6612fng_stop_to_code(config, action_id, template_arg, args):
             cv.Required(CONF_ID): cv.use_id(GROVE_TB6612FNG),
         }
     ),
+    synchronous=True,
 )
 async def grove_tb6612fng_standby_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -149,6 +153,7 @@ async def grove_tb6612fng_standby_to_code(config, action_id, template_arg, args)
             cv.Required(CONF_ID): cv.use_id(GROVE_TB6612FNG),
         }
     ),
+    synchronous=True,
 )
 async def grove_tb6612fng_no_standby_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -166,6 +171,7 @@ async def grove_tb6612fng_no_standby_to_code(config, action_id, template_arg, ar
             cv.Required(CONF_ADDRESS): cv.i2c_address,
         }
     ),
+    synchronous=True,
 )
 async def grove_tb6612fng_change_address_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/haier/climate.py

@@ -319,10 +319,16 @@ HAIER_HON_BASE_ACTION_SCHEMA = automation.maybe_simple_id(
 
 
 @automation.register_action(
-    "climate.haier.display_on", DisplayOnAction, HAIER_BASE_ACTION_SCHEMA
+    "climate.haier.display_on",
+    DisplayOnAction,
+    HAIER_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 @automation.register_action(
-    "climate.haier.display_off", DisplayOffAction, HAIER_BASE_ACTION_SCHEMA
+    "climate.haier.display_off",
+    DisplayOffAction,
+    HAIER_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def display_action_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -330,10 +336,16 @@ async def display_action_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "climate.haier.beeper_on", BeeperOnAction, HAIER_HON_BASE_ACTION_SCHEMA
+    "climate.haier.beeper_on",
+    BeeperOnAction,
+    HAIER_HON_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 @automation.register_action(
-    "climate.haier.beeper_off", BeeperOffAction, HAIER_HON_BASE_ACTION_SCHEMA
+    "climate.haier.beeper_off",
+    BeeperOffAction,
+    HAIER_HON_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def beeper_action_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -345,11 +357,13 @@ async def beeper_action_to_code(config, action_id, template_arg, args):
     "climate.haier.start_self_cleaning",
     StartSelfCleaningAction,
     HAIER_HON_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 @automation.register_action(
     "climate.haier.start_steri_cleaning",
     StartSteriCleaningAction,
     HAIER_HON_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def start_cleaning_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -368,6 +382,7 @@ async def start_cleaning_to_code(config, action_id, template_arg, args):
             ),
         }
     ),
+    synchronous=True,
 )
 async def haier_set_vertical_airflow_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -391,6 +406,7 @@ async def haier_set_vertical_airflow_to_code(config, action_id, template_arg, ar
             ),
         }
     ),
+    synchronous=True,
 )
 async def haier_set_horizontal_airflow_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -403,10 +419,16 @@ async def haier_set_horizontal_airflow_to_code(config, action_id, template_arg,
 
 
 @automation.register_action(
-    "climate.haier.health_on", HealthOnAction, HAIER_BASE_ACTION_SCHEMA
+    "climate.haier.health_on",
+    HealthOnAction,
+    HAIER_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 @automation.register_action(
-    "climate.haier.health_off", HealthOffAction, HAIER_BASE_ACTION_SCHEMA
+    "climate.haier.health_off",
+    HealthOffAction,
+    HAIER_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def health_action_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
@@ -414,13 +436,22 @@ async def health_action_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "climate.haier.power_on", PowerOnAction, HAIER_BASE_ACTION_SCHEMA
+    "climate.haier.power_on",
+    PowerOnAction,
+    HAIER_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 @automation.register_action(
-    "climate.haier.power_off", PowerOffAction, HAIER_BASE_ACTION_SCHEMA
+    "climate.haier.power_off",
+    PowerOffAction,
+    HAIER_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 @automation.register_action(
-    "climate.haier.power_toggle", PowerToggleAction, HAIER_BASE_ACTION_SCHEMA
+    "climate.haier.power_toggle",
+    PowerToggleAction,
+    HAIER_BASE_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def power_action_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/hbridge/fan/__init__.py

@@ -52,6 +52,7 @@ CONFIG_SCHEMA = (
     "fan.hbridge.brake",
     BrakeAction,
     maybe_simple_id({cv.GenerateID(): cv.use_id(HBridgeFan)}),
+    synchronous=True,
 )
 async def fan_hbridge_brake_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/hc8/sensor.py

@@ -68,7 +68,10 @@ CALIBRATION_ACTION_SCHEMA = cv.Schema(
 
 
 @automation.register_action(
-    "hc8.calibrate", HC8CalibrateAction, CALIBRATION_ACTION_SCHEMA
+    "hc8.calibrate",
+    HC8CalibrateAction,
+    CALIBRATION_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def hc8_calibration_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/hdc302x/sensor.py

@@ -114,7 +114,10 @@ HDC302X_HEATER_ON_ACTION_SCHEMA = maybe_simple_id(
 
 
 @automation.register_action(
-    "hdc302x.heater_on", HeaterOnAction, HDC302X_HEATER_ON_ACTION_SCHEMA
+    "hdc302x.heater_on",
+    HeaterOnAction,
+    HDC302X_HEATER_ON_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def hdc302x_heater_on_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -127,7 +130,10 @@ async def hdc302x_heater_on_to_code(config, action_id, template_arg, args):
 
 
 @automation.register_action(
-    "hdc302x.heater_off", HeaterOffAction, HDC302X_ACTION_SCHEMA
+    "hdc302x.heater_off",
+    HeaterOffAction,
+    HDC302X_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def hdc302x_heater_off_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/hlk_fm22x/__init__.py

@@ -170,6 +170,7 @@ async def to_code(config):
         },
         key=CONF_NAME,
     ),
+    synchronous=True,
 )
 async def hlk_fm22x_enroll_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -192,6 +193,7 @@ async def hlk_fm22x_enroll_to_code(config, action_id, template_arg, args):
         },
         key=CONF_FACE_ID,
     ),
+    synchronous=True,
 )
 async def hlk_fm22x_delete_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -210,6 +212,7 @@ async def hlk_fm22x_delete_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(HlkFm22xComponent),
         }
     ),
+    synchronous=True,
 )
 async def hlk_fm22x_delete_all_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -225,6 +228,7 @@ async def hlk_fm22x_delete_all_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(HlkFm22xComponent),
         }
     ),
+    synchronous=True,
 )
 async def hlk_fm22x_scan_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -240,6 +244,7 @@ async def hlk_fm22x_scan_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(HlkFm22xComponent),
         }
     ),
+    synchronous=True,
 )
 async def hlk_fm22x_reset_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/http_request/__init__.py

@@ -279,13 +279,22 @@ HTTP_REQUEST_SEND_ACTION_SCHEMA = HTTP_REQUEST_ACTION_SCHEMA.extend(
 
 
 @automation.register_action(
-    "http_request.get", HttpRequestSendAction, HTTP_REQUEST_GET_ACTION_SCHEMA
+    "http_request.get",
+    HttpRequestSendAction,
+    HTTP_REQUEST_GET_ACTION_SCHEMA,
+    synchronous=True,
 )
 @automation.register_action(
-    "http_request.post", HttpRequestSendAction, HTTP_REQUEST_POST_ACTION_SCHEMA
+    "http_request.post",
+    HttpRequestSendAction,
+    HTTP_REQUEST_POST_ACTION_SCHEMA,
+    synchronous=True,
 )
 @automation.register_action(
-    "http_request.send", HttpRequestSendAction, HTTP_REQUEST_SEND_ACTION_SCHEMA
+    "http_request.send",
+    HttpRequestSendAction,
+    HTTP_REQUEST_SEND_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def http_request_action_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/http_request/ota/__init__.py

@@ -70,6 +70,7 @@ OTA_HTTP_REQUEST_FLASH_ACTION_SCHEMA = cv.All(
     "ota.http_request.flash",
     OtaHttpRequestComponentFlashAction,
     OTA_HTTP_REQUEST_FLASH_ACTION_SCHEMA,
+    synchronous=True,
 )
 async def ota_http_request_action_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/htu21d/sensor.py

@@ -93,6 +93,7 @@ async def to_code(config):
         },
         key=CONF_LEVEL,
     ),
+    synchronous=True,
 )
 async def set_heater_level_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -112,6 +113,7 @@ async def set_heater_level_to_code(config, action_id, template_arg, args):
         },
         key=CONF_STATUS,
     ),
+    synchronous=True,
 )
 async def set_heater_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/hub75/display.py

@@ -652,6 +652,7 @@ async def to_code(config: ConfigType) -> None:
         },
         key=CONF_BRIGHTNESS,
     ),
+    synchronous=True,
 )
 async def hub75_set_brightness_to_code(
     config: ConfigType,

esphome/components/integration/sensor.py

@@ -111,6 +111,7 @@ async def to_code(config):
             cv.Required(CONF_ID): cv.use_id(IntegrationSensor),
         }
     ),
+    synchronous=True,
 )
 async def sensor_integration_reset_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -127,6 +128,7 @@ async def sensor_integration_reset_to_code(config, action_id, template_arg, args
             cv.Required(CONF_VALUE): cv.templatable(cv.float_),
         }
     ),
+    synchronous=True,
 )
 async def sensor_integration_set_value_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/key_collector/__init__.py

@@ -142,6 +142,7 @@ async def to_code(config):
             cv.GenerateID(): cv.use_id(KeyCollector),
         }
     ),
+    synchronous=True,
 )
 async def enable_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
@@ -157,6 +158,7 @@ async def enable_to_code(config, action_id, template_arg, args):
             cv.GenerateID(): cv.use_id(KeyCollector),
         }
     ),
+    synchronous=True,
 )
 async def disable_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)

esphome/components/ld2410/__init__.py

@@ -97,7 +97,10 @@ BLUETOOTH_PASSWORD_SET_SCHEMA = cv.Schema(
 
 
 @automation.register_action(
-    "bluetooth_password.set", BluetoothPasswordSetAction, BLUETOOTH_PASSWORD_SET_SCHEMA
+    "bluetooth_password.set",
+    BluetoothPasswordSetAction,
+    BLUETOOTH_PASSWORD_SET_SCHEMA,
+    synchronous=True,
 )
 async def bluetooth_password_set_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])

esphome/components/ledc/output.py

@@ -77,6 +77,7 @@ async def to_code(config):
             cv.Required(CONF_FREQUENCY): cv.templatable(validate_frequency),
         }
     ),
+    synchronous=True,
 )
 async def ledc_set_frequency_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])