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Supabase•7mo ago•

1 reply

IliasB

Using supabase-kt with per-request JWTs (GraphQL Kotlin backend, RLS enabled)

Hi everyone

I'm building a mobile app with:

* an Expo frontend (React Native),
* a Kotlin backend exposing a GraphQL API,
* and Supabase as the database (hosted, with RLS enabled).

What I'm trying to do:

For every request, the frontend sends a JWT in the Authorization header.
My backend verifies it and then needs to query Supabase on behalf of the user, so that RLS policies apply correctly.

I'm using

io.github.jan-tennert.supabase-kt

io.github.jan-tennert.supabase-kt

, version

2.1.2

2.1.2

, with the PostgREST plugin.
So far, the only way I've found to pass a custom JWT is by creating a new

SupabaseClient

SupabaseClient

per request with the user's token.
This works, but I'm worried about resource usage and scalability, especially with concurrent users.

My question:

Is there a way to inject a custom

Authorization

Authorization

header (JWT) per request, without creating a new Supabase client each time?

Or alternatively, is there a recommended approach to safely and efficiently query Supabase with dynamic tokens from a Kotlin backend?

Thanks a lot for any tips or examples !