update tables from backend.

I have a backend service that can update the tables. it is connected to supabase client using the anon key. i don't want to check

auth.role() = 'anon'

auth.role() = 'anon'

auth.role() = 'anon'

auth.role() = 'anon'

but would want to have a role or id check. should i auth signin using id? or is there a serviceid that could be assigned a role?