Agent Ready HTML

The Plain Fetch viewer

In short

The viewer requests a URL the way a plain-fetch agent does: no JavaScript, one request for HTML, one for markdown, one for llms.txt and one for a path that should not exist. It shows the initial HTML on the left, the readable text on the right, and seven flags underneath.

Pre-loaded with www.wikipedia.org, read 4 November 2026. Type any public URL to run your own.

GET https://bilibili.com/ answered 200 with text/html, 127 KB, 2 redirects, read 9 November 2026, 15:06 UTC. Final URL: https://www.bilibili.com/zh-Hans.

Permalink: /viewer/?url=https://bilibili.com/

A plain-fetch client does not get the heading: 1 of 6 checks found.

Initial HTML what a plain fetch receives

<!DOCTYPE html>
<html  lang="zh-CN">
  
<head>
<meta charset="UTF-8" />
<title>bilibili
</title>
<meta
      name="description"
      content="哔哩哔哩（bilibili.com)是国内知名的视频弹幕网站，这里有及时的动漫新番，活跃的ACG氛围，有创意的Up主。大家可以在这里找到许多欢乐。"
    />
[... 2 more head elements folded ...]
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
[... 3 more head elements folded ...]
<meta http-equiv="Cache-Control" content="no-transform" />
<meta http-equiv="Cache-Control" content="no-siteapp" />
[... 4 more head elements folded ...]
<link rel="canonical" href="https://www.bilibili.com/" />
<link rel="alternate" media="only screen and (max-width: 640px)" href="https://m.bilibili.com" />
[... 15 more head elements folded ...]
</head>
  
<body style="background-color: var(--bg3)">
    
<div class="browser-tip">
</div>
    
<script>[... 413 characters folded ...]
</script>
    
<div id="app"><!--[--><!--[-->
<div class="bili-video-card__wrap __scale-wrap" data-v-345986cd><a href="//cm.bilibili.com" data-target-url="**" data-v-345986cd></a>
</div><!----><!--]-->
<div class="bili-feed4"><!--[-->
<div class="bili-header bili-header--large">
<div class="bili-header__menu is-zh bili-header__bar" data-v-3380389d>
<div class="left-entry is-zh menu-left" data-v-ec16de5b data-v-3380389d><!---->
<div class="left-entry-main" data-v-ec16de5b><!--[--><!--[-->
<div class="v-popover-wrap left-entry__item home-page-entry" data-v-ec16de5b><!--[--><a href="//www.bilibili.com/zh-Hans" class="left-entry__item-trigger" data-v-ec16de5b>
<svg width="18" height="18" viewBox="0 0 18 18" fill="none" xmlns="http://www.w3.org/2000/svg" class="trigger-icon" data-v-ec16de5b>[... 1,164 characters folded ...]
</svg><span class="trigger-text" data-v-ec16de5b>首页</span><!----></a><!--]--><!---->
</div><!----><!--]--><!--[-->
<div class="v-popover-wrap left-entry__item" data-v-ec16de5b><!--[--><a target="_blank" class="left-entry__item-trigger" data-v-ec16de5b>
<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="trigger-icon" data-v-ec16de5b>[... 1,109 characters folded ...]
</svg><span class="trigger-text" data-v-ec16de5b>下载客户端</span><!----></a><!--]--><!---->
</div><!----><!--]--><!--]--><!---->
</div>
</div>
<div class="center-search-container menu-center" data-v-3380389d>
<div class="center-search__bar">
<form id="nav-searchform" class="" style="border-radius:8px 8px 8px 8px;">
<div class="nav-search-content"><input class="nav-search-input" type="text" autocomplete="off" accesskey="s" maxlength="100" x-webkit-speech x-webkit-grammar="builtin:translate" value placeholder title>
<div class="nav-search-clean">
<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">[... 749 characters folded ...]
</svg>
</div>
</div>
<div class="nav-search-btn">
<svg width="17" height="17" viewBox="0 0 17 17" fill="none" xmlns="http://www.w3.org/2000/svg">[... 681 characters folded ...]
</svg>
</div>
</form>
<div class="search-panel nav-search-panel" style="display:none;"><!----><!----><!---->
</div>
</div>
</div>
<div class="right-entry is-zh menu-right" data-v-599fe3bc data-v-3380389d>
<div class="right-entry__loading" data-v-599fe3bc>
</div>
</div>
</div>
<div class="bili-header__banner"><picture class="v-img banner-img" id="bili-header-banner-img"><!--[--><!--[--><source srcset="//i0.hdslb.com/bfs/app/58a4e1f9a4ad2fc524858e317a8b3e0c4c34f512.jpg@3840w_360h_1c.avif" type="image/avif"><!--]--><!--[--><source srcset="//i0.hdslb.com/bfs/app/58a4e1f9a4ad2fc524858e317a8b3e0c4c34f512.jpg@3840w_360h_1c.webp" type="image/webp"><!--]--><!--[--><img src="//i0.hdslb.com/bfs/app/58a4e1f9a4ad2fc524858e317a8b3e0c4c34f512.jpg@3840w_360h_1c" alt loading="eager" onload="typeof window.headerBannerLoaded === &#39;function&#39; &amp;&amp; window.headerBannerLoaded();wind [... 1097 characters folded ...]><!--]--><!--]--></picture><!---->
<div class="header-banner__inner"><!----><!---->
</div>
<div class="taper-line">
</div><!---->
</div><!----><!---->
</div><!----><!----><!----><!--]--><!---->
<main class="bili-feed4-layout">
<div class="fixed-channel-shim">
</div>
<div class="feed2">
<div class="recommended-container_overseas">
<div class="container is-version8"><!--[-->
<div class="feed-card">
<div class="bili-feed-card">
<div class="bili-video-card is-rcmd" style="--cover-radio:56.25%;"><!----><!---->
<div class="bili-video-card__wrap"><!----><a class="bili-video-card__image--link" href="https://www.bilibili.com/zh-Hans/video/BV1QMxD6FEGi" target="_blank">
<div class="bili-video-card__image">
<div class="bili-video-card__image--wrap"><!----><picture class="v-img bili-video-card__cover"><!--[--><!--[--><source srcset="//i1.hdslb.com/bfs/archive/6be53be7e184243cb40c09d1434f477f514bd047.jpg@672w_378h_1c_!web-home-common-cover.avif" type="image/avif"><!--]--><!--[--><source srcset="//i1.hdslb.com/bfs/archive/6be53be7e184243cb40c09d1434f477f514bd047.jpg@672w_378h_1c_!web-home-common-cover.webp" type="image/webp"><!--]--><!--[--><img src="//i1.hdslb.com/bfs/archive/6be53be7e184243cb40c09d1434f477f514bd047.jpg@672w_378h_1c_!web-home-common-cover" alt="" loading="eager" onload=";firstVideoCardImgLoaded();if (!this.__BMG_IMG_LOAD_HANDLED__) { this. [... 569 characters folded ...]><!--]--><!--]--></picture>
</div>
<div class="bili-video-card__mask">
<div class="bili-video-card__stats">
<div class="bili-video-card__stats--left"><!--[--><span class="bili-video-card__stats--item">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 24 24" width="24" height="24" fill="#ffffff" class="bili-video-card__stats--icon"><!--[--><!--]-->
</svg><span class="bili-video-card__stats--text">155.4万</span></span><!--]--><span class="bili-video-card__stats--item">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 24 24" width="24" height="24" fill="#ffffff" class="bili-video-card__stats--icon"><!--[--><!--]-->
</svg><span class="bili-video-card__stats--text">9598</span></span>
</div><span class="bili-video-card__stats__duration">32:48</span>
</div>
</div>
</div></a>
<div style="" class="bili-video-card__info">
<div class="bili-video-card__info--right"><!--[-->
<div class="bili-video-card__info--no-interest" style="display:none;">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 24 24" width="24" height="24" class="bili-video-card__info--no-interest--icon" fill="currentColor"><!--[--><!--]-->
</svg>
</div><!----><!--]-->
<h3 class="bili-video-card__info--tit" title="【崩铁】星神★阿哈综合测评：献予欢愉之诗！欢愉全体升格！武器对比+技能解读+遗器选择+星魂提升！"><a href="https://www.bilibili.com/zh-Hans/video/BV1QMxD6FEGi" target="_blank">【崩铁】星神★阿哈综合测评：献予欢愉之诗！欢愉全体升格！武器对比+技能解读+遗器选择+星魂提升！</a>
</h3>
<div class="bili-video-card__info--bottom"><!--[--><!----><a class="bili-video-card__info--owner" href="//space.bilibili.com/zh-Hans/43222001" target="_blank">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 24 24" width="24" height="24" fill="currentColor" class="bili-video-card__info--owner__up"><!--[--><!--]-->
</svg><span class="bili-video-card__info--author" title="卡特亚">卡特亚</span><span class="bili-video-card__info--date">· 11月4日</span></a><!--]-->
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="feed-card">
<div class="bili-feed-card">
<div class="bili-video-card is-rcmd" style="--cover-radio:56.25%;"><!----><!---->
<div class="bili-video-card__wrap"><!----><a class="bili-video-card__image--link" href="https://www.bilibili.com/zh-Hans/video/BV1TKWn6AEg5" target="_blank">
<div class="bili-video-card__image">
<div class="bili-video-card__image--wrap"><!----><picture class="v-img bili-video-card__cover"><!--[--><!--[--><source srcset="//i1.hdslb.com/bfs/archive/6510a345181854ae11b71bbca7b64ed09b19abca.jpg@672w_378h_1c_!web-home-common-cover.avif" type="image/avif"><!--]--><!--[--><source srcset="//i1.hdslb.com/bfs/archive/6510a345181854ae11b71bbca7b64ed09b19abca.jpg@672w_378h_1c_!web-home-common-cover.webp" type="image/webp"><!--]--><!--[--><img src="//i1.hdslb.com/bfs/archive/6510a345181854ae11b71bbca7b64ed09b19abca.jpg@672w_378h_1c_!web-home-common-cover" alt="" loading="eager" onload="fsrCb();firstVideoCardImgLoaded();if (!this.__BMG_IMG_LOAD_HANDLED__)  [... 576 characters folded ...]><!--]--><!--]--></picture>
</div>
<div class="bili-video-card__mask">
<div class="bili-video-card__stats">
<div class="bili-video-card__stats--left"><!--[--><span class="bili-video-card__stats--item">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 24 24" width="24" height="24" fill="#ffffff" class="bili-video-card__stats--icon"><!--[--><!--]-->
</svg><span class="bili-video-card__stats--text">2.6万</span></span><!--]--><span class="bili-video-card__stats--item">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 24 24" width="24" height="24" fill="#ffffff" class="bili-video-card__stats--icon"><!--[--><!--]-->
</svg><span class="bili-video-card__stats--text">21</span></span>
</div><span class="bili-video-card__stats__duration">03:38</span>
</div>
</div>
</div></a>
<div style="" class="bili-video-card__info">
<div class="bili-video-card__info--right"><!--[-->

Shown with 30 long blocks (scripts, styles, long tags) folded into a marker that says how many characters they hide; line breaks added before block tags because the source is minified; the pane stops after the first 200 words; the page is 127 KB.

Reading view the text a plain-fetch client can extract

title: bilibili

No H1 in the initial HTML

首页 下载客户端 155.4万 9598 32:48 【崩铁】星神★阿哈综合测评：献予欢愉之诗！欢愉全体升格！武器对比+技能解读+遗器选择+星魂提升！ 卡特亚· 11月4日 2.6万 21 03:38 完了，让她装到了【手搓动画大赛】 BlackMaLou· 昨天 18:33 17.3万 650 00:21 传奇影像丨强大无需多言 因缘精灵亚文化精选· 昨天 12:00 75.3万 511 03:57 我是来抓你的，请别乱跑，因为我追不上。 流夜一动不动· 3天前 16.3万 416 02:41 离谱又上头！崩铁虚虚的花式吃法！【虚虚整活大赛】 糖不吃la· 2天前 50.3万 622 02:26 假如每过一天你家附近就会出现一只怪物，第4天 烟墨JIMOJI· 2天前 179.3万 152 00:44 啥也别说了兄弟 喝吧跳吧 活通透点 小普-三角洲重生版· 3天前 75.7万 566 01:32 当脑瘫博主第一次进入航天 阿铭铭丶· 11月4日 2.8万 71 47:14 Claude(Code)桌面APP，保姆级全攻略，一期视频精通，顶级Agent软件长什么样？ 技术爬爬虾· 昨天 17:14 117.7万 79 00:38 真有店家解决了独臂角色的问题…… 佐流Saryu· 11月5日

67 words in all.

1 found, 3 missing, 3 notes, from 7 checks run

  • H1Missing
  • 200 wordsNote
  • llms.txtNote
  • MarkdownMissing
  • Missing pathFound
  • JSON-LDMissing
  • OpenAPINote
What a plain fetch found on bilibili.com
CheckResultDetail
H1 in the initial HTMLMissing no H1A plain-fetch client finds no page heading in the bytes it receives.
First 200 words in the initial HTMLNote 67 wordsOnly 67 words of visible text arrive in the initial HTML. That is a short page, not a shell.
llms.txt present and linkedNote present, not linked10994 bytes, 52 links. Structure grade A (6 of 6). Nothing on the home page points to it. Ora's lab found 86 percent of llms.txt fetches arrived through a link.
Markdown on requestMissing 200 text/htmlAccept: text/markdown returned 200 with text/html; charset=utf-8. The server ignores the header.
Status of a made-up pathFound 404/agent-ready-html-missing-path-check returned 404: a real status code for a missing page.
JSON-LD typesMissing noneNo JSON-LD block on the home page. Ora's lab found it made no difference when the answer was already in the HTML; Google says it is not needed for AI features.
OpenAPI linkNote none on the home pageNo OpenAPI link on the home page. It matters only for a site that ships an API.

Run the full check

The viewer read one page with four requests. The full check we recommend next is Ora's scan. Its Access layer runs 42 checks worth 30 of its 100 points, among them content without JavaScript, bot detection, llms.txt, markdown on request, JSON-LD and the sitemap (Ora's check catalogue, contract 1.38.0, read 5 November 2026). Open Ora's report for bilibili.com.

Limits: Ora reads public URLs only, says two runs of one scan land within a couple of points without publishing repeat-scan data, and keeps the product that fixes what it finds behind a waitlist. Cloudflare's scanner at isitagentready.com is a quick free alternative, and Mintlify's score covers documentation.

What the viewer does

It sends four plain GET requests with the user agent Mozilla/5.0 (compatible; agent-readiness-crawl/1.0): the URL itself, the same URL with Accept: text/markdown, /llms.txt on the same host, and a made-up path at the root. It runs no JavaScript. The left pane is the first bytes of the HTML as text, with long scripts and styles folded into a marker that says how many characters they hide. The H1 and the first 200 words of visible text are marked in both panes. The flags under the panes say what the four responses added up to.

Limits

  • Ten seconds for all four requests together, 1.5 MB read from the home page, at most five redirects, each one checked again.
  • http and https only, default ports only. Private, local and internal addresses and names are refused.
  • Ten runs per address per minute. The counter lives in memory on the edge function, so it is per instance rather than global. Past ten you get a 429 with a Retry-After header.
  • Results are cached for 24 hours by the response headers. Nothing is written to a database: the viewer keeps the first 200 words and the extracted fields for the length of the request and keeps no page body beyond that.

What it does not tell you

A plain fetch from this server is not a real agent. Bot protection weighs the source address more than the user agent, so a page that answers 200 here can still refuse an agent, and the reverse. Ora's lab found (2026-10-19) that returning 403 to agent user agents and hiding the answer in JavaScript were the only two of 19 configurations that stopped retrieval; the viewer can see the second, and can only hint at the first. The initial HTML reference covers both. The server logs and the published crawler address ranges settle the first.

The seven flags

H1 in the initial HTML
Whether the HTML the server sends already contains an H1. It is the cheapest sign that the page does not depend on scripts to say what it is.
First 200 words in the initial HTML
Whether at least 200 words of visible text arrive in the initial HTML. Under 40 words with an app root element is flagged as a JavaScript shell.
llms.txt present and linked
Whether /llms.txt answers with a plain-text file, whether the home page links it (an anchor, a link element or a Link header), and the structure grade the index uses.
Markdown on request
Whether a request with Accept: text/markdown comes back as text/markdown. Cloudflare Radar found 3.9 percent of scanned top sites passing this at its April 2026 launch.
Status of a made-up path
Whether a path that should not exist returns 404 or 410. A 200 is a soft 404 and reads as a live page.
JSON-LD types
The schema.org types found in JSON-LD blocks on the page. Ora's lab found JSON-LD made no difference when the answer was already in the HTML.
OpenAPI link
Whether the page links an OpenAPI file, by an anchor or a service-desc link relation. It matters only for a site that ships an API.

Sources

  1. Ora: AgentReady launch post (Ora's lab findings) https://ora.ai/blog/agentready-launch, read 4 November 2026
  2. Ora check catalogue, contract 1.38.0 (132 checks, 42 in the Access layer) https://ora.ai/api/checks, read 5 November 2026
  3. Ora home page (the fixing product is behind a waitlist) https://ora.ai/, read 5 November 2026
  4. Ora: Introducing Deep Scan (repeat scans) https://ora.ai/blog/introducing-deep-scan, read 5 November 2026
  5. Ora llms.txt (public URLs only) https://ora.ai/llms.txt, read 5 November 2026
  6. Vercel: Make your site readable by AI agents https://vercel.com/kb/guide/make-your-site-readable-by-ai-agents, read 4 November 2026
  7. llms.txt proposal (llmstxt.org) https://llmstxt.org/, read 4 November 2026

Last reviewed 5 November 2026