Self promotion is fine here typically, I’d say the main thing here is it sounds like a tv ad. Try X! And not in response to a question or stated problem.

Here’s a tip, imagine how you’d comment if this wasn’t your library but just one that you knew and used. Would you have commented at all? Would you explain why you’d use it, how, the direct and clear relevance to the article?

Take that and add in that it’s your library.

If you wouldn’t comment otherwise, you’re just advertising a thing where people are. If you would, you’re contributing to a conversation with something you built.

Oh and there’s lots of open source products that have most useful features paid saas or licensed, or it’s an oss library that only talks to a paid saas thing.

Edit - the other thing you can do is just call out the comment at the start as self promotion or a plug, I think your work is more directly relevant here and doesn’t need that but it’s another approach when it’s a bit more tangential. That’s better here than other communities.