What would I like to be added?

A prompt or input option that allows users to directly enter their API key via terminal/CLI when the environment variable is not found — instead of only relying on .env file configuration.

Why is this needed?

Currently, when selecting the API key authentication option, the CLI fails with a “variable not found” error if the key is not present in a .env file. This is unintuitive and creates friction for users who expect to enter the key manually or paste it once for temporary usage. Adding a direct input fallback improves user experience, reduces confusion, and aligns with standard CLI design expectations.