diff --git a/libraries/AP_Scripting/docs/docs.lua b/libraries/AP_Scripting/docs/docs.lua
index 4afe1f28f7..044314b9c5 100644
--- a/libraries/AP_Scripting/docs/docs.lua
+++ b/libraries/AP_Scripting/docs/docs.lua
@@ -1296,6 +1296,11 @@ function rc:get_channel(chan_num) end
 ---@return boolean
 function rc:has_valid_input() end
 
+-- return cached level of aux function
+---@param aux_fn integer
+---@return integer|nil
+function rc:get_aux_cached(aux_fn) end
+
 -- desc
 ---@param aux_fun integer
 ---@param ch_flag integer
diff --git a/libraries/AP_Scripting/generator/description/bindings.desc b/libraries/AP_Scripting/generator/description/bindings.desc
index 6f1a141cc6..64fbdf9862 100644
--- a/libraries/AP_Scripting/generator/description/bindings.desc
+++ b/libraries/AP_Scripting/generator/description/bindings.desc
@@ -276,6 +276,7 @@ singleton RC_Channels method run_aux_function boolean RC_Channel::AUX_FUNC'enum
 singleton RC_Channels method has_valid_input boolean
 singleton RC_Channels method lua_rc_channel RC_Channel uint8_t 1 NUM_RC_CHANNELS
 singleton RC_Channels method lua_rc_channel rename get_channel
+singleton RC_Channels method get_aux_cached boolean RC_Channel::AUX_FUNC'enum 0 UINT16_MAX uint8_t'Null
 
 include AP_SerialManager/AP_SerialManager.h