{"slug": "show-hn-manifest-a-cheap-fingerprint-endpoint-for-detecting-page-changes", "title": "Show HN: Manifest – a cheap fingerprint endpoint for detecting page changes", "summary": "Manifest, a new open-source tool, provides a structured endpoint that maps every button, form, and input on a webpage for AI agents, solving the problem of agents guessing actions or relying on fragile hand-written selectors. The tool turns any URL into a machine-readable manifest of available actions and their requirements, aiming to make web interactions more reliable for automated agents.", "body_md": "# The internet, readable by agents.\n\n### Manifest turns any URL into a structured map of what an AI agent can actually do on a page - every button, form, and input, with the fields it needs to fill and what's required before it can move on.\n\n## The problem\n\nGive an AI agent a browser, and it can *see* a webpage. Give it a scraper, and it can *read* one. Neither tells it what it's allowed to *do* there.\n\nToday, agents either take a screenshot and guess, or a developer hand-writes selectors that break the next time the page ships a redesign. There's no layer that tells an agent: here are the actions on this page, here's what each one needs, here's what's required.\n\nThat's the gap Manifest fills.", "url": "https://wpnews.pro/news/show-hn-manifest-a-cheap-fingerprint-endpoint-for-detecting-page-changes", "canonical_source": "https://omfang.io/", "published_at": "2026-07-26 10:34:54+00:00", "updated_at": "2026-07-26 10:52:24.447046+00:00", "lang": "en", "topics": ["ai-agents", "developer-tools", "ai-tools"], "entities": ["Manifest"], "alternates": {"html": "https://wpnews.pro/news/show-hn-manifest-a-cheap-fingerprint-endpoint-for-detecting-page-changes", "markdown": "https://wpnews.pro/news/show-hn-manifest-a-cheap-fingerprint-endpoint-for-detecting-page-changes.md", "text": "https://wpnews.pro/news/show-hn-manifest-a-cheap-fingerprint-endpoint-for-detecting-page-changes.txt", "jsonld": "https://wpnews.pro/news/show-hn-manifest-a-cheap-fingerprint-endpoint-for-detecting-page-changes.jsonld"}}