Hi HN! I've built hnterminal, a pip package that lets you browse, upvote, and comment on HN from terminal:
$ pip install hnterminal
$ hnterminal
On the read side, hnterminal uses the HN API to construct front page and comment trees. On the write side, it reads the webpage and constructs an API response from parsed information. Unfortunately, a write API does not exist for HN (that I know of). Login is accomplished with a login cookie that is only stored in memory as it runs. You don't need to login to browse HN, its only for upvotes and commenting.