I'm new to E.On Next (and on Drive v4), having just moved from Octopus where I did make a lot of use of their API capabilities in Home Assistant and in custom development to integrated the Agile tariff with Tesla Powerwall batteries.
I'm looking around to see what API options there are here and so far I've only found a HACS add-on for Home Assistant which provides the basic account and consumption data from E.On Next -
https://github.com/madmachinations/eon-next
Looking at the code for this add-on it does appear that E.On Next is using the same Kraken API that Octopus uses, so it should be fairly straight forward to extend the add-on, or write a new integration using the Kraken API as it mirrors the Octopus API and API documentation.
I couldn't find any documentation links on the E.On Next Kraken API, so I'm not sure if the E.On Next version supports both REST and GraphQL like the Octopus one does.
The REST APIs appear to work as expected, so the following REST API call returns the list of valid tariffs (product), just like the Octopus one:
https://api.eonnext-kraken.energy/v1/products/
Has anyone else experimented with the Kraken API on E.On Next?