Just use https://www.hnsearch.com https://www.hnsearch.com, along with https://www.hnsearch.com/rss https://www.hnsearch.com/rss and https://www.hnsearch.com/bi

Just use https://www.hnsearch.com https://www.hnsearch.com, along with https://www.hnsearch.com/rss https://www.hnsearch.com/rss and https://www.hnsearch.com/bigrss https://www.hnsearch.com/bigrss if you want to mimic the front page. There is rarely a need to scrape HN directly, but if you do make sure your bot is polite (especially with respect to rate limits).