Your product is nothing special, unique, or anything requiring even the slightest amount of effort. Your product exists and is free, built into just about every IDE with AI.
You have not contributed or participated in any part of HN in any way other than self promotion.
These look like a significant amount of humans reported or flagged your post, not automatic removal filter.
> don't contain affiliate links, and are not commercial advertisements.
First thing on your page is pricing and view plans.
> For example, pricing isn't the first thing users see, and there isn't some automatic pricing page as you describe That makes me wonder if you actually looked at the product before writing the reply
You called it not commercial and then the top menu is Pricing and the call to action is Start / View Plans, both above the fold. If it wasn't commercial link to your git repo instead of whatever slop landing page you generated.
Spend a couple of years engaging with the site, adding to the discourse, and then look into showcasing your own stuff after that.
> Are there common mistakes first-time or low-karma users make when posting Show HN projects?
> For people who have successfully posted Show HN projects before, what tends to work well, and what tends to trigger flags or negative reactions?
I used Grammarly because English is not my native language, but the post itself was written by me.
It's funny that we're getting to a point where people might need to intentionally write with grammar mistakes just to prove they're human.
Sometimes I wish we were still in 2016.