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

SuperTokens.com

hi <@498057949541826571> 
Is there any api for bulk user creation based on phone/email 
I want to migrate over 50 lakhs user but it is taking time like forever

there is non at the moment. You will have to call the API. We are working on adding a bulk import feature, but the timeline for that is unknown

SInce you are using self hosted, you could add to the db directly if you want.

for example, add one user, and see which table change and then similarly, add other users manually via db queries.

Can you tell which tables are affected for passwordless users other than password_users
I want to pass userId , email/phone as Insert query

In current method I am creating the user and then mapping the userId

you can see the queries here: https://github.com/supertokens/supertokens-postgresql-plugin/blob/master/src/main/java/io/supertokens/storage/postgresql/queries/PasswordlessQueries.java#L391

is there any other refernce link for node ?

not really. The SQL queries are all in java code since the core is in java