Show HN: Secured Env – Utility script to source env variables from 1Password

Neat. You might be interested in https://dmno.dev

It let's you define a full schema for your config - including both sensitive and non-sensitive items - and then use plugins to pull sensitive values from a variety of backends, including 1password.

It's a bit more focused on application config rather than injecting a bunch of stuff into your shell, but no reason why you couldn't use it for that too.