curl --request POST \
  --url http://localhost:5173/api/supabase.variables \
  --header 'Content-Type: application/json' \
  --cookie apiKeys= \
  --data '
{
  "accessToken": "<string>",
  "projectRef": "<string>"
}
'

{
  "anonKey": "<string>",
  "serviceKey": "<string>",
  "url": "<string>"
}