Any way to do ext without server?

Hello again.
Im working on extension which shows player stats using his ‘nickname’ and ‘apikey’ (required for API request on site to get stats). After I finished, I found a problem with the storage: You cant store data which user sends using ‘config.html’, because twitch doesnt collect this data and you have no server to do this.
So I write here to get an advice from you (senior twitch extension dev’s): Any way to avoid data store using live_config or something else?
PS: I would not use server because Im student and have no money to pay for server.

Not currently, there is no way to store config information on Twitch’s Server. It’s on the Roadmap though