Hi everyone!
You do need to provide your own Open AI API key but the embedding API itself is pretty cheap. I've maybe spent ~$2 in testing the repository.
Hope this is helpful! I see it as one part of a broader solution towards automatically aligning other standards/conventions with Brick. Let me know if you have any ideas for improving it, and feel free to file issues on GitHub. I have a group of students building a simple UI for the tool this semester, so hopefully I'll be able to share that by the end of the calendar year.
Best,
Gabe