WPS: No way to get key after successful connection

[Niz]

WPS can be done just by simple command and it works fine.
And we can get SSID by "AT+CWJAP?".
But there's no way to get key.

We are creating product without auto reconnection.
Then we need to keep both SSID & key retrieved by WPS.

Unless we could get key, WPS is just as useless with ESP8266...
Then we need to abandon to use it in our product...

We are appreciated if you could plan to add functionality to get the key.
Thank you very much.

P.S. followings are sample we are successful to get WPS done. And we need to continue to get key...

AT+WPS=1

wps started

OK
WIFI DISCONNECT
wps success,connecting ap ...
WIFI CONNECTED
WIFI GOT IP
AT+CWJAP?
+CWJAP:"myaccesspoint","a4:12:42:xx:xx:xx",4,-52

OK

[blubb]

I have no experience with the AT firmware, but isn't the data for a successful connection saved? Your module should be able to reconnect after a powercycle.
To force being offline, you could use NULL_MODE. With the NONOS SDK I'd just do
wifi_set_opmode(NULL_MODE);

[Her Mary]

I think that maybe you can get it by wifi_station_get_config.