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://instructure.com/ answered 200 with text/html, 215 KB, 1 redirect, read 8 November 2026, 13:14 UTC. Final URL: https://www.instructure.com/.

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

The page answers a plain fetch: 4 of 6 checks found.

Initial HTML what a plain fetch receives



<!DOCTYPE html>
<html lang="en" dir="ltr" prefix="content: http://purl.org/rss/1.0/modules/content/  dc: http://purl.org/dc/terms/  foaf: http://xmlns.com/foaf/0.1/  og: http://ogp.me/ns#  rdfs: http://www.w3.org/2000/01/rdf-schema#  sc [... 179 characters folded ...]>
  <head>
[... 1 more head element folded ...]
<meta name="viewport" content="width=device-width, initial-scale=1.0">
[... 7 more head elements folded ...]
<meta charset="utf-8" />
[... 1 more head element folded ...]
<meta name="description" content="Empower learning with Instructure’s LMS and edtech solutions for K–12, higher education, and businesses. Discover Canvas, Impact, and Mastery to drive success." />
[... 1 more head element folded ...]
<link rel="canonical" href="https://www.instructure.com/" />
[... 4 more head elements folded ...]
<meta name="Generator" content="Drupal 11 (https://www.drupal.org)" />
[... 2 more head elements folded ...]
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
[... 2 more head elements folded ...]
<link rel="alternate" hreflang="en" href="https://www.instructure.com/" />
<link rel="alternate" hreflang="en-au" href="https://www.instructure.com/en-au" />
<link rel="alternate" hreflang="de" href="https://www.instructure.com/de" />
<link rel="alternate" hreflang="pt-br" href="https://www.instructure.com/pt-br" />
<link rel="alternate" hreflang="es" href="https://www.instructure.com/es" />
<link rel="alternate" hreflang="en-gb" href="https://www.instructure.com/en-gb" />
<link rel="alternate" hreflang="nl" href="https://www.instructure.com/nl" />
<link rel="alternate" hreflang="it" href="https://www.instructure.com/it" />
<link rel="alternate" hreflang="ja" href="https://www.instructure.com/ja" />
<link rel="alternate" hreflang="ko" href="https://www.instructure.com/ko" />
<link rel="alternate" hreflang="x-default" href="https://www.instructure.com/" />
[... 1 more head element folded ...]
<title>Instructure: Leading EdTech for K–12, Higher Ed &amp; Business</title>
[... 77 more head elements folded ...]
</head>
  <body class="path-frontpage page-node-type-component-page">
        <div id="skip-to-content" class="sr-only focus:not-sr-only">
      <a href="#main-content" class="skip-to-content-link">Skip to main content</a>
    </div>
    <noscript>[... 157 characters folded ...]</noscript>

      <div class="dialog-off-canvas-main-canvas" data-off-canvas-main-canvas>
    


<div class="layout-container">

  <header role="banner" class=''>
    <div data-sticky-container>
      <div class="sticky sticky-header" data-sticky data-margin-top="0" data-sticky-on="small">
        
  <div class="region region-navigation-top-inst">
    <div class="region-content flex justify-end mx-5 py-5 ">
      <nav role="navigation" aria-labelledby="block-inst-utilityinst-menu" id="block-inst-utilityinst" class="block block-menu navigation menu--utility-inst">
            
  <h2 class="visually-hidden" id="block-inst-utilityinst-menu">Utility-inst</h2>
  

        
              <ul class="menu utility-dropdown flex">
                                    <li class="menu-item menu-item--expanded mx-5 py-2">
              <a href="/partners" class="dropdown" id="util-trigger-0-1" role="button" aria-haspopup="menu" aria-expanded="false" aria-controls="util-submenu-0-1">Partners</a>
                        <ul class="menu" id="" role="menu" aria-labelledby="" hidden>
                                    <li class="menu-item mx-5 py-2" >
                                                        <a href="/partners" attributes="menuitem" data-drupal-link-system-path="node/9746">The EdTech Collective</a>
                        </li>
                                <li class="menu-item mx-5 py-2" >
                                                        <a href="/partners/channel-partners" attributes="menuitem" data-drupal-link-system-path="node/25066">Channel Partners</a>
                        </li>
        </ul>
  
              </li>
                                <li class="menu-item mx-5 py-2">
                                  <a href="/support/canvas-support-faq" data-drupal-link-system-path="node/5401">Support</a>
                        </li>
                                <li class="menu-item menu-item--expanded mx-5 py-2">
              <a href="/" class="dropdown" id="util-trigger-0-3" role="button" aria-haspopup="menu" aria-expanded="false" aria-controls="util-submenu-0-3">Login</a>
                        <ul class="menu" id="" role="menu" aria-labelledby="" hidden>
                                    <li class="menu-item mx-5 py-2" >
                                                        <a href="/canvas/login" class="menu-item--login-canvas" attributes="menuitem" data-drupal-link-system-path="node/24569">Canvas</a>
                        </li>
                                <li class="menu-item mx-5 py-2" >
                                                        <a href="https://portfolium.com/login" class="menu-item--login-canvas" attributes="menuitem">Student ePortfolio</a>
                        </li>
                                <li class="menu-item mx-5 py-2" >
                                                        <a href="https://app.masteryconnect.com/login" class="menu-item--login-masteryconnect" attributes="menuitem">Mastery Connect</a>
                        </li>
                                <li class="menu-item mx-5 py-2" >
                                                        <a href="https://identity.us2.kimonocloud.com/login" class="menu-item--login-elevate" attributes="menuitem">Elevate Data Sync</a>
                        </li>
                                <li class="menu-item mx-5 py-2" >
                                                        <a href="https://app.learnplatform.com/users/sign_in" class="menu-item--login-learnplatform" attributes="menuitem">LearnPlatform by Instructure</a>
                        </li>
                                <li class="menu-item mx-5 py-2" >
                                                        <a href="/parchment/parchment-digital-badges/login" class="menu-item--login-parchmentdigitalbadges" attributes="menuitem" data-drupal-link-system-path="node/20495">Parchment Digital Badges</a>
                        </li>
        </ul>
  
              </li>
                                <li class="menu-item mx-5 py-2">
                                  <a href="/resources/videos/exploring-canvas" data-drupal-link-system-path="node/27127">Explore Canvas</a>
                        </li>
        </ul>
  



  </nav>
 



<div id="block-inst-regionswitcher" class="block block-e3-regional-redirects block-region-switcher-block block-inst-regionswitcher">
  
    
      <div class="region-switcher-main-wrapper switcher-closed"><div class="region-switcher-active-region"><button type="button" class="region-switcher-active-button" aria-label="EN - Select your location" aria-haspopup="dialog" aria-expanded="false" aria-controls="region-switcher-modal">EN</button>
</div>
<div class="region-switcher-modal hidden" role="dialog" aria-modal="true" aria-labelledby="region-heading-id"><button class="region-switcher-close-modal">Close modal</button>
<div class="region-switcher-modal-logo"></div>
<div class="region-switcher-list-wrapper"><h2 id="region-heading-id">Select your location</h2>
<div class="item-list"><ul class="region-switcher-list"><li><div class="item-list"><ul><li class="region-switcher-link"><a href="/" class="region-link skip-external region-link-active" data-active-text="EN" data-locale="en">English</a><div>North America</div>
</li><li class="region-switcher-link"><a href="/es" class="region-link skip-external" data-active-text="ES" data-locale="es">Español</a><div>Español</div>
</li><li class="region-switcher-link"><a href="/en-au" class="region-link skip-external" data-active-text="EN-AU" data-locale="en-au">English</a><div>Asia-Pacific</div>
</li><li class="region-switcher-link"><a href="/it" class="region-link skip-external" data-active-text="IT" data-locale="it">Italiano</a><div>Italiano</div>
</li><li class="region-switcher-link"><a href="/en-gb" class="region-link skip-external" data-active-text="EN-GB" data-locale="en-gb">English</a><div>United Kingdom</div>
</li><li class="region-switcher-link"><a href="/nl" class="region-link skip-external" data-active-text="NL" data-locale="nl">Nederlands</a><div>Dutch</div>
</li><li class="region-switcher-link"><a href="/de" class="region-link skip-external" data-active-text="DE" data-locale="de">Deutsch</a><div>Deutsch</div>
</li><li class="region-switcher-link"><a href="/pt-br" class="region-link skip-external" data-active-text="PT" data-locale="pt">Português</a><div>Português</div>
</li><li class="region-switcher-link"><a href="/ja" class="region-link skip-external" data-active-text="JA" data-locale="ja">日本語</a><div>Japanese</div>
</li><li class="region-switcher-link"><a href="/ko" class="region-link skip-external" data-active-text="KO" data-locale="ko">한국어</a><div>Korean</div>
</li></ul></div></li></ul></div></div>
</div>
</div>
<div class="region-redirect-reset-link hidden"><a href="">Reset language preference</a></div>
<div class="modal-redirect-reset-wrapper hidden"><div class="modal-redirect-reset-copy"></div>
<a href="" class="clear-preference-link">Clear redirect preference</a></div>

  </div>

    </div>
  </div>

Shown with 96 long blocks (scripts, styles, long tags) folded into a marker that says how many characters they hide; the pane stops after the first 200 words; the page is 215 KB.

Reading view the text a plain-fetch client can extract

title: Instructure: Leading EdTech for K–12, Higher Ed & Business

Welcome to the most-visited education website in the world.

Skip to main content Utility-inst Partners The EdTech Collective Channel Partners Support Login Canvas Student ePortfolio Mastery Connect Elevate Data Sync LearnPlatform by Instructure Parchment Digital Badges Explore Canvas EN Close modal Select your location English North America Español Español English Asia-Pacific Italiano Italiano English United Kingdom Nederlands Dutch Deutsch Deutsch Português Português 日本語 Japanese 한국어 Korean Reset language preference Clear redirect preference Menu Main - inst Main Menu Why Instructure Why Instructure Instructure is greater than the sum of its parts: It's where the best edtech, the best partners, and the best community unite. Read more Ecosystem Overview Connected solutions for learning, assessment, and credentials support success at every stage of education. Our Partners Our ecosystem is open for innovation. Meet the industry's most extensive network of vetted partners. Our Community Collaborate, innovate, and succeed with fellow educators and technologists in the ultra-engaged Instructure Community. Our Customers See who's transforming teaching and learning through future-ready technology. AI Perspectives Where AI meets education. Instructure's take on responsible AI, industry trends, and how we're building AI-powered products that support learners, educators, and organizations. Featured Resource Featured Asset Blog What We Shared at the April 2026 New & Next Showcase Learn more

1698 more words follow in the initial HTML.

4 found, 1 missing, 2 notes, from 7 checks run

  • H1Found
  • 200 wordsFound
  • llms.txtNote
  • MarkdownMissing
  • Missing pathFound
  • JSON-LDFound
  • OpenAPINote
What a plain fetch found on instructure.com
CheckResultDetail
H1 in the initial HTMLFound one H1First H1: Welcome to the most-visited education website in the world.
First 200 words in the initial HTMLFound 200 of 200 wordsThe initial HTML carries 1898 words of visible text; the first 200 are marked in the left pane.
llms.txt present and linkedNote present, not linked256000 bytes, 1720 links. Structure grade B (5 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 typesFound Brand, ImageObject, Organization, PostalAddress and 1 more5 schema.org types in JSON-LD blocks on the home page: Brand, ImageObject, Organization, PostalAddress, WebPage.
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 instructure.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