{"type": "article", "title": "Show HN: AST-guard A gradient-immune structural guard against RL reward hacking", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/show-hn-ast-guard-a-gradient-immune-structural-guard-against-rl-reward-hacking", "original_source": "https://github.com/Nick-is-building/ast-guard", "published": "2026-06-29T17:39:21+00:00", "accessed": "2026-06-29", "id": "show-hn-ast-guard-a-gradient-immune-structural-guard-against-rl-reward-hacking"}