SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

Is there any limitations to just insert users into the supertokens tables?

I have all the users in a table, and I want them into supertokens

so I'll just insert them as passwordless users and set the metadata?

You can do that. Just need to make sure you put info in the right tables.

`all_auth_recipe_users` and `passwordless_users` tables

luckily their ID's are uuid already so this SHOULD be pretty smooth 😄