fly proxy 6543:5432 -a app-name Proxying local port 6543 to remote [app-name.internal]:5432

this exposes internal fly.io db to localhost:6543

https://community.fly.io/t/is-there-any-way-to-see-data-in-database-like-normally-we-can-connect-our-postgres-database-to-pgadmin/4280/11