Actions are supported in the "Informational" skill as of today. Now you can say...

"Alexa, ask Wireless Tag to beep keys"
"Alexa, ask Wireless Tag to beep keys 5 times"
"Alexa, ask Wireless Tag to stop beep keys"

If you have tag named "keys". Arm or disarm motion sensor by saying ...

"Alexa, ask Wireless Tag to arm keys"
"Alexa, ask Wireless Tag to disarm keys"

Link a temperature sensor tag with a Nest or Honeywell WiFi thermostat in order to regulate temperature in a location different from where the thermostat is installed. If you have linked a thermostat named "Downstairs" and a tag named "Living Room", use it for the thermostat by saying ...

"Alexa, ask Wireless Tag to set downstairs at Living Room", or
"Alexa, ask Wireless Tag to use Living Room for downstairs".

The AC or heat is turned on when tag temperature monitoring reports "too hot" or "too cold". Change either the "too hot" or "too cold" threshold temperature by saying ...

"Alexa, ask Wireless Tag to set Living Room temperature to 70".

If you are in UK, the number here will be automatically interpreted as Celsius instead of Fahrenheit. You can also enable, disable or set thresholds for temperature, humidity or light monitoring by voice command, like ...

"Alexa, ask Wireless Tag to monitor temperature at Kitchen Freezer".
"Alexa, ask Wireless Tag to stop temperature monitoring at Kitchen Freezer".
"Alexa, ask Wireless Tag to set temperature at Kitchen Freezer between -40 and 0".
"Alexa, ask Wireless Tag to monitor humidity at Kitchen Freezer".
"Alexa, ask Wireless Tag to set humidity at Kitchen Freezer between 0 and 80".