FoxESS and Octopus Agile API
Posted: Fri Nov 07, 2025 9:09 am
Hi all,
Is anyone else having issues with newly generated Agile API keys and the fox app?
I cannot seem to get it to work. The app will say "please close and reopen this page" and doesn't work. Re-installing didn't help (iOS latest version at time of writing)
On the fox cloud website when I try and enter the API key and account I get "40256-Parameter could not be parsed correctly" and again the setting won't take. I've tried the API key in other apps such as Agile Watcher recommended by Octopus and it worked. I've also tried regenerating the Agile API key to no avail. Is there something I or the installer have missed, as e are both trying to figure out what's gone wrong here.
Additionally, when I try and get agile prices from the fox website, I get the following error "
42038-Get electricity meter rates failed
Is anyone else having issues with newly generated Agile API keys and the fox app?
I cannot seem to get it to work. The app will say "please close and reopen this page" and doesn't work. Re-installing didn't help (iOS latest version at time of writing)
On the fox cloud website when I try and enter the API key and account I get "40256-Parameter could not be parsed correctly" and again the setting won't take. I've tried the API key in other apps such as Agile Watcher recommended by Octopus and it worked. I've also tried regenerating the Agile API key to no avail. Is there something I or the installer have missed, as e are both trying to figure out what's gone wrong here.
Additionally, when I try and get agile prices from the fox website, I get the following error "
42038-Get electricity meter rates failed