Ok. I asked because I have backend in nestjs so in another repositorium so I think I cannot use https://supertokens.com/docs/thirdpartyemailpassword/nextjs/session-verification/in-ssr#1-we-use-getsession-in-getserversideprops🤔

Your backend is in nestjs, but your frontend is served via nextjs. Therefore SSR applies to nextjs.

so do I need change backendConfig on frontendConfig?

im not sure what you mean.

I mean supertokensNode.init(backendConfig())

What about this config?

Do I need to change to the config for the frontend or do I need to do something else np. delete or add something.

im not sure what your setup is. But you should not need to change any config, other than allow sharing of cookies across api doamins as mentioned in our docs here: https://supertokens.com/docs/thirdpartyemailpassword/common-customizations/sessions/multiple-api-endpoints if you are using localhost, then you shouldn't need to do any changes to the config.

So if I have the same value in appInfo I don't need change anything and use sharing of cookies across api domains?

yea. I think so.. really depends on your setup

I see. Thanks :)