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.
The page answers a plain fetch: 4 of 6 checks found.
Initial HTML what a plain fetch receives
<!DOCTYPE html>
<html data-dpl-id="dpl_DYvEruvEUkK5dcLp7ihsDPRwGbGF" lang="en" data-scroll-behavior="smooth" class="ibm_plex_mono_4339f630-module__Ba8dYq__variable helveticaneue_401ded7d-module__kSnhWa__variable objectsans_784547c8-module__V6AwpW__variable">
<head>
<meta charSet="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"/>
[... 55 more head elements folded ...]
<title>Build and Grow Your App Business | RevenueCat
</title>
<meta name="description" content="The world’s best apps use RevenueCat to power in-app purchases, manage customer data, and grow revenue across iOS, Android, and the web."/>
[... 1 more head element folded ...]
<link rel="canonical" href="https://www.revenuecat.com/"/>
<link rel="alternate" hrefLang="en" href="https://www.revenuecat.com/"/>
<link rel="alternate" hrefLang="ja" href="https://www.revenuecat.com/jp"/>
<link rel="alternate" hrefLang="ko" href="https://www.revenuecat.com/ko"/>
<link rel="alternate" hrefLang="ca" href="https://www.revenuecat.com/cat"/>
<link rel="alternate" hrefLang="x-default" href="https://www.revenuecat.com/"/>
[... 28 more head elements folded ...]
</head>
<body class="flex min-h-screen flex-col font-sans">
<div hidden=""><!--$--><!--/$-->
</div>
<header class="bg-gray-50 relative z-20 after:will-change-opacity after:pointer-events-none after:absolute after:inset-0 after:bg-white after:opacity-0 after:transition-opacity after:duration-75" data-disable-document-scroll="false">
<div class="container flex h-16 items-center justify-between"><a class="font-object inline-flex items-center gap-x-1 rounded transition-colors duration-300 [&_svg]:shrink-0 text-primary hover:text-secondary-red [&_svg]:size-4 max-md:text-sm z-50 w-max pt-1.5" href="/"><img alt="" width="138" height="40" decoding="async" data-nimg="1" style="color:transparent" src="/website/_next/static/immutable/media/logo.3-m_vtr0mkp56.svg"/><span class="sr-only">Back to the RevenueCat homepage</span></a>
<nav aria-label="Main navigation" class="max-xl:hidden ml-8">
<ul class="flex items-center">
<li>
<div><button class="relative z-10 h-16 px-3 inline-flex items-center gap-x-1 rounded font-object text-sm text-primary transition-colors duration-300 group-hover:text-secondary-red hover:text-secondary-red after:mt-0.75 after: [... 179 characters folded ...]>Why RevenueCat?</button>
</div>
</li>
<li>
<div><button class="relative z-10 h-16 px-3 inline-flex items-center gap-x-1 rounded font-object text-sm text-primary transition-colors duration-300 group-hover:text-secondary-red hover:text-secondary-red after:mt-0.75 after: [... 179 characters folded ...]>Solutions</button>
</div>
</li>
<li>
<div><button class="relative z-10 h-16 px-3 inline-flex items-center gap-x-1 rounded font-object text-sm text-primary transition-colors duration-300 group-hover:text-secondary-red hover:text-secondary-red after:mt-0.75 after: [... 179 characters folded ...]>Developers</button>
</div>
</li>
<li>
<div><button class="relative z-10 h-16 px-3 inline-flex items-center gap-x-1 rounded font-object text-sm text-primary transition-colors duration-300 group-hover:text-secondary-red hover:text-secondary-red after:mt-0.75 after: [... 179 characters folded ...]>Resources</button>
</div>
</li>
<li><a class="font-object inline-flex items-center gap-x-1 rounded transition-colors duration-300 [&_svg]:shrink-0 text-primary hover:text-secondary-red text-sm [&_svg]:size-3.5 relative z-10 h-16 px-3" id="header-pricing" href="/pricing">Pricing</a>
</li>
</ul>
</nav>
<div class="relative z-10 flex items-center gap-6 max-xl:justify-center max-xl:pt-4 max-xl:pb-5 max-md:flex-col-reverse max-md:gap-3 max-xl:hidden xl:ml-auto"><a class="font-object inline-flex items-center gap-x-1 rounded transition-colors duration-300 [&_svg]:shrink-0 text-gray-800 hover:text-primary text-sm [&_svg]:size-3.5 leading-snug font-medium max-xl:h-9 max-md: [... 112 characters folded ...]>Log in</a>
<div class="flex items-center gap-3 max-md:w-full max-md:flex-col-reverse"><a data-slot="button" class="transition-colors duration-300 whitespace-nowrap font-object font-medium relative inline-flex w-fit items-center justify-center gap-1 border border-[#576cdb]/70 text-secondary-blue-2 hover:bo [... 132 characters folded ...]><span class="relative z-10 inline-flex whitespace-nowrap items-center justify-center gap-1 w-full">Contact sales</span></a><a data-slot="button" class="transition-colors duration-300 whitespace-nowrap font-object font-medium relative inline-flex w-fit items-center justify-center gap-1 bg-secondary-blue-1 hover:bg-secondary-blue-2 text-white [... 101 characters folded ...]><span class="relative z-10 inline-flex whitespace-nowrap items-center justify-center gap-1 w-full">Sign up</span></a>
</div>
</div><button class="relative -mr-2 size-10 flex-col items-center justify-center gap-1.25 z-50 hidden max-xl:flex" type="button" aria-label="Menu"><span class="block h-0.5 w-6 rounded-full bg-primary"></span><span class="block h-0.5 w-6 rounded-full bg-primary"></span><span class="block h-0.5 w-6 rounded-full bg-primary"></span></button>
</div>
</header>
<div class="will-change-opacity pointer-events-none fixed inset-0 z-11 bg-primary/10 opacity-0 transition-opacity duration-75 max-xl:hidden" aria-hidden="true">
</div>
<main class="grow overflow-x-clip">
<section class="section-hero bg-gray-50">
<div class="flex max-xl:flex-col flex-row pt-22 pb-5 max-xl:pt-16 container">
<div class="flex flex-col w-1/2 shrink justify-center max-xl:mx-auto max-xl:w-4/5 max-xl:items-center max-md:w-full max-md:max-w-md">
<h1 class="font-object leading-dense font-medium tracking-tighter text-balance text-primary max-w-4xl max-lg:max-w-2xl max-md:max-w-xl text-6xl max-xl:text-5xl max-lg:text-4xl max-sm:text-3xl text-left max-xl:text-center">Build and grow your app business
</h1>
<p class="mt-4 max-w-2xl text-xl leading-snug font-normal text-pretty text-gray-800 max-xl:mt-3.5 max-xl:text-pretty max-lg:max-w-lg max-lg:text-lg max-md:mt-3 max-md:max-w-md max-md:text-base max-xl:text-center pr-10 max-xl:pr-0">The world's best apps use RevenueCat to power purchases, manage customer data, and grow revenue on iOS, Android, and the web.
</p>
<div class="relative mt-8 w-full max-w-[480px] max-xl:mx-auto max-sm:mt-7 max-sm:max-w-[calc(100vw_-_2rem)]">
<form noValidate="" aria-busy="false" data-form-id="16" data-form-success-action="redirect" data-form-success-redirect-url="https://app.revenuecat.com/signup" data-form-pass-email-to-redirect="true"><input class="sr-only" type="text" tabindex="-1" autoComplete="off" aria-hidden="true" name="website_url"/>
<div class="relative"><input class="remove-autocomplete-styles h-16 w-full appearance-none rounded-full border border-gray-100 bg-white py-5 pr-44 pl-7 font-object text-base leading-normal text-primary shadow-[0_6px_16px_0_rgba(61,75,143,0.15 [... 394 characters folded ...]><button class="absolute top-2 right-2 bottom-2 inline-flex min-w-34 items-center justify-center rounded-full bg-secondary-blue-1 px-7 font-object text-base leading-none font-medium tracking-dense whitespace-nowrap text-w [... 247 characters folded ...]>Start for free</button>
</div>
</form>
</div>
<script>[... 453 characters folded ...]
</script>
<ul class="mt-8 grid w-full max-w-[calc(100vw-2rem)] grid-cols-3 items-start justify-items-center gap-x-3 gap-y-0 sm:mt-11 sm:flex sm:max-w-none sm:flex-wrap sm:justify-center sm:gap-x-0 sm:gap-y-4 xl:justify-start">
<li class="flex w-full min-w-0 items-start justify-center sm:w-auto sm:justify-start">
<div class="flex min-w-0 flex-col items-center text-center xl:items-start xl:text-left"><span class="font-object text-2xl leading-snug font-medium tracking-dense text-primary-blue">162K+</span><span class="font-sans text-sm leading-snug font-light whitespace-normal text-gray-800 max-xs:text-xs sm:text-base sm:leading-normal sm:whitespace-nowrap">Apps supported</span>
</div>
</li>
<li class="flex w-full min-w-0 items-start justify-center sm:w-auto sm:justify-start"><span class="mx-5 hidden h-14 w-px shrink-0 bg-gray-200 sm:block" aria-hidden="true"></span>
<div class="flex min-w-0 flex-col items-center text-center xl:items-start xl:text-left"><span class="font-object text-2xl leading-snug font-medium tracking-dense text-primary-blue">6B+</span><span class="font-sans text-sm leading-snug font-light whitespace-normal text-gray-800 max-xs:text-xs sm:text-base sm:leading-normal sm:whitespace-nowrap">API requests daily</span>
</div>
</li>
<li class="flex w-full min-w-0 items-start justify-center sm:w-auto sm:justify-start"><span class="mx-5 hidden h-14 w-px shrink-0 bg-gray-200 sm:block" aria-hidden="true"></span>
<div class="flex min-w-0 flex-col items-center text-center xl:items-start xl:text-left"><span class="font-object text-2xl leading-snug font-medium tracking-dense text-primary-blue">$19B+</span><span class="font-sans text-sm leading-snug font-light whitespace-normal text-gray-800 max-xs:text-xs sm:text-base sm:leading-normal sm:whitespace-nowrap">Revenue processed</span>
</div>
</li>
</ul>
</div>
<div class="pointer-events-none relative mt-8 w-[55%] max-xl:mx-auto max-xl:w-[65%] max-lg:w-[88%] max-md:w-full">
<div class="relative size-full aspect-square mx-auto max-w-[600px]">
<div class="aspect-square w-full absolute top-1/2 left-1/2 -translate-1/2">
<div class="" style="width:100%;height:100%"><canvas style="vertical-align:top;width:0;height:0"></canvas>
</div>
</div>
</div>
</div>
</div>
</section>
<section class="section-trusted-by-logos bg-gray-50">
<div class="container">
<ul class="group/logo-row flex items-center max-md:flex-wrap max-md:justify-center max-md:gap-x-7 max-md:gap-y-3.5 justify-between">
<li class="group/logo-item relative flex h-10 shrink-0 items-center max-xl:h-9 max-lg:h-7" style="opacity:0;filter:blur(0.1875rem);transform:translateY(0.25rem)"><span class="inline-flex h-10 w-auto text-gray-800 opacity-60 transition-opacity max-xl:h-9 max-lg:h-7 [&>svg]:h-full [&>svg]:w-auto duration-500 ease-[cubic-bezier(0.22,1,0.36,1)] group-has-[[data-case-stu [... 138 characters folded ...]>
<svg width="102" height="40" aria-hidden="true">
</svg></span>
</li>
<li class="group/logo-item relative flex h-10 shrink-0 items-center max-xl:h-9 max-lg:h-7" style="opacity:0;filter:blur(0.1875rem);transform:translateY(0.25rem)"><a class="font-object gap-x-1 [&_svg]:shrink-0 group/logo relative -m-2 flex shrink-0 flex-col items-center justify-center rounded-sm border-0 bg-transparent p-2 text-gray-800 shadow-none ring-0 transition-opacity du [... 285 characters folded ...]><span class="absolute inset-x-0 -top-4 bottom-0" aria-hidden="true"></span><span class="inline-flex h-10 w-auto text-gray-800 opacity-60 transition-opacity max-xl:h-9 max-lg:h-7 [&>svg]:h-full [&>svg]:w-auto duration-500 ease-[cubic-bezier(0.22,1,0.36,1)] group-has-[[data-case-stu [... 260 characters folded ...]>
<svg width="118" height="40" aria-hidden="true">
</svg></span></a><span class="pointer-events-none absolute -top-3.5 right-0 z-10 box-border flex max-h-3 max-w-3 origin-right items-center justify-center overflow-hidden rounded-full bg-[#ececef] text-gray-800 shadow-none md:-top-6 md:ma [... 150 characters folded ...]><span class="absolute top-1/2 left-1/2 h-px w-1.25 bg-gray-800/60 md:w-[0.4375rem]" style="opacity:1;filter:blur(0rem);transform:translateX(-50%) translateY(-50%)"></span><span class="absolute top-1/2 left-1/2 h-1.25 w-px bg-gray-800/60 md:h-[0.4375rem]" style="opacity:1;filter:blur(0rem);transform:translateX(-50%) translateY(-50%)"></span><span class="relative z-10 flex items-center gap-x-1 whitespace-nowrap" style="opacity:0;filter:blur(0.25rem);transform:translateX(0.25rem)"><span class="font-sans text-xs leading-tight font-normal tracking-[-0.0075rem]">Case study</span><span class="flex h-[0.3856rem] w-[0.3013rem] items-center justify-center" style="opacity:0;filter:blur(0.1875rem);transform:translateX(-0.1875rem) scale(0.72)">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 7 9" class="size-full!">[... 169 characters folded ...]
</svg></span></span></span>
</li>
<li class="group/logo-item relative flex h-10 shrink-0 items-center max-xl:h-9 max-lg:h-7" style="opacity:0;filter:blur(0.1875rem);transform:translateY(0.25rem)"><a class="font-object gap-x-1 [&_svg]:shrink-0 group/logo relative -m-2 flex shrink-0 flex-col items-center justify-center rounded-sm border-0 bg-transparent p-2 text-gray-800 shadow-none ring-0 transition-opacity du [... 353 characters folded ...]><span class="absolute inset-x-0 -top-4 bottom-0" aria-hidden="true"></span><span class="inline-flex h-10 w-auto text-gray-800 opacity-60 transition-opacity max-xl:h-9 max-lg:h-7 [&>svg]:h-full [&>svg]:w-auto duration-500 ease-[cubic-bezier(0.22,1,0.36,1)] group-has-[[data-case-stu [... 253 characters folded ...]>
<svg width="120" height="40" aria-hidden="true">
</svg></span></a><span class="pointer-events-none absolute -top-3.5 right-0 z-10 box-border flex max-h-3 max-w-3 origin-right items-center justify-center overflow-hidden rounded-full bg-[#ececef] text-gray-800 shadow-none md:-top-6 md:ma [... 150 characters folded ...]><span class="absolute top-1/2 left-1/2 h-px w-1.25 bg-gray-800/60 md:w-[0.4375rem]" style="opacity:1;filter:blur(0rem);transform:translateX(-50%) translateY(-50%)"></span><span class="absolute top-1/2 left-1/2 h-1.25 w-px bg-gray-800/60 md:h-[0.4375rem]" style="opacity:1;filter:blur(0rem);transform:translateX(-50%) translateY(-50%)"></span><span class="relative z-10 flex items-center gap-x-1 whitespace-nowrap" style="opacity:0;filter:blur(0.25rem);transform:translateX(0.25rem)"><span class="font-sans text-xs leading-tight font-normal tracking-[-0.0075rem]">Case study</span><span class="flex h-[0.3856rem] w-[0.3013rem] items-center justify-center" style="opacity:0;filter:blur(0.1875rem);transform:translateX(-0.1875rem) scale(0.72)">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 7 9" class="size-full!">[... 169 characters folded ...]
</svg></span></span></span>
</li>
<li class="group/logo-item relative flex h-10 shrink-0 items-center max-xl:h-9 max-lg:h-7" style="opacity:0;filter:blur(0.1875rem);transform:translateY(0.25rem)"><a class="font-object gap-x-1 [&_svg]:shrink-0 group/logo relative -m-2 flex shrink-0 flex-col items-center justify-center rounded-sm border-0 bg-transparent p-2 text-gray-800 shadow-none ring-0 transition-opacity du [... 506 characters folded ...]><span class="absolute inset-x-0 -top-4 bottom-0" aria-hidden="true"></span><span class="inline-flex h-10 w-auto text-gray-800 opacity-60 transition-opacity max-xl:h-9 max-lg:h-7 [&>svg]:h-full [&>svg]:w-auto duration-500 ease-[cubic-bezier(0.22,1,0.36,1)] group-has-[[data-case-stu [... 260 characters folded ...]>
<svg width="148" height="40" aria-hidden="true">
</svg></span></a><span class="pointer-events-none absolute -top-3.5 right-0 z-10 box-border flex max-h-3 max-w-3 origin-right items-center justify-center overflow-hidden rounded-full bg-[#ececef] text-gray-800 shadow-none md:-top-6 md:ma [... 150 characters folded ...]><span class="absolute top-1/2 left-1/2 h-px w-1.25 bg-gray-800/60 md:w-[0.4375rem]" style="opacity:1;filter:blur(0rem);transform:translateX(-50%) translateY(-50%)"></span><span class="absolute top-1/2 left-1/2 h-1.25 w-px bg-gray-800/60 md:h-[0.4375rem]" style="opacity:1;filter:blur(0rem);transform:translateX(-50%) translateY(-50%)"></span><span class="relative z-10 flex items-center gap-x-1 whitespace-nowrap" style="opacity:0;filter:blur(0.25rem);transform:translateX(0.25rem)"><span class="font-sans text-xs leading-tight font-normal tracking-[-0.0075rem]">Case study</span><span class="flex h-[0.3856rem] w-[0.3013rem] items-center justify-center" style="opacity:0;filter:blur(0.1875rem);transform:translateX(-0.1875rem) scale(0.72)">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 7 9" class="size-full!">[... 169 characters folded ...]
</svg></span></span></span>
</li>
<li class="group/logo-item relative flex h-10 shrink-0 items-center max-xl:h-9 max-lg:h-7" style="opacity:0;filter:blur(0.1875rem);transform:translateY(0.25rem)"><a class="font-object gap-x-1 [&_svg]:shrink-0 group/logo relative -m-2 flex shrink-0 flex-col items-center justify-center rounded-sm border-0 bg-transparent p-2 text-gray-800 shadow-none ring-0 transition-opacity du [... 247 characters folded ...]><span class="absolute inset-x-0 -top-4 bottom-0" aria-hidden="true"></span><span class="inline-flex h-10 w-auto text-gray-800 opacity-60 transition-opacity max-xl:h-9 max-lg:h-7 [&>svg]:h-full [&>svg]:w-auto duration-500 ease-[cubic-bezier(0.22,1,0.36,1)] group-has-[[data-case-stu [... 259 characters folded ...]>
<svg width="103" height="40" aria-hidden="true">
</svg></span></a><span class="pointer-events-none absolute -top-3.5 right-0 z-10 box-border flex max-h-3 max-w-3 origin-right items-center justify-center overflow-hidden rounded-full bg-[#ececef] text-gray-800 shadow-none md:-top-6 md:ma [... 150 characters folded ...]><span class="absolute top-1/2 left-1/2 h-px w-1.25 bg-gray-800/60 md:w-[0.4375rem]" style="opacity:1;filter:blur(0rem);transform:translateX(-50%) translateY(-50%)"></span><span class="absolute top-1/2 left-1/2 h-1.25 w-px bg-gray-800/60 md:h-[0.4375rem]" style="opacity:1;filter:blur(0rem);transform:translateX(-50%) translateY(-50%)"></span><span class="relative z-10 flex items-center gap-x-1 whitespace-nowrap" style="opacity:0;filter:blur(0.25rem);transform:translateX(0.25rem)"><span class="font-sans text-xs leading-tight font-normal tracking-[-0.0075rem]">Case study</span><span class="flex h-[0.3856rem] w-[0.3013rem] items-center justify-center" style="opacity:0;filter:blur(0.1875rem);transform:translateX(-0.1875rem) scale(0.72)">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 7 9" class="size-full!">[... 169 characters folded ...]
</svg></span></span></span>
</li>
</ul>
</div>
</section>
<section class="section-spacing h-30 max-xl:h-20 max-md:h-14 bg-gray-50" aria-hidden="true">
</section>
<section class="section-spacing h-40 max-xl:h-30 max-lg:h-28 max-md:h-20 bg-white" aria-hidden="true">
</section>
<section class="section-carousel overflow-hidden bg-white">
<div class="mx-auto max-w-7xl px-8 max-md:px-5">
<header class="mb-16 flex flex-col gap-4 max-xl:mb-14 max-md:mb-12 max-md:gap-3.5 items-center text-center">
<h2 class="font-object leading-dense font-medium tracking-tighter text-balance text-primary max-w-4xl max-lg:max-w-2xl max-md:max-w-xl text-[3.5rem] max-xl:text-[2.75rem] max-lg:text-[2.25rem] max-sm:text-[1.875rem] text-center mx-auto">Data and tools for every team
</h2>
<p class="max-w-2xl text-xl leading-snug font-light text-pretty text-gray-800 max-xl:text-lg max-lg:max-w-lg max-md:max-w-md max-md:text-base">Make reliable cross-platform data and easy-to-use growth tools accessible to everyone.
</p>
</header>
Shown with 146 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 526 KB.
Reading view the text a plain-fetch client can extract
title: Build and Grow Your App Business | RevenueCat
Build and grow your app business
Back to the RevenueCat homepage Why RevenueCat? Solutions Developers Resources Pricing Log in Contact sales Sign up Build and grow your app business The world's best apps use RevenueCat to power purchases, manage customer data, and grow revenue on iOS, Android, and the web. Start for free 162K+Apps supported 6B+API requests daily $19B+Revenue processed Case study Case study Case study Case study Data and tools for every team Make reliable cross-platform data and easy-to-use growth tools accessible to everyone. Engineering Stop spending time on platform updates and edge cases — build great features instead. For engineering teams Marketing Grow revenue with a single source of truth for your subscription data that connects with your existing marketing stack. For marketing teams Product Streamline your product's growth with easy management of pricing, paywalls, and A/B tests, backed by actionable data. For product teams Support Provide better customer support with a unified view of subscriptions, making it easy to resolve issues and tailor support. For support teams Data teams Free your data team from ad-hoc requests, troubleshooting, and double-checking accuracy. For data teams Leadership Make better decisions with an accurate view of the performance of your subscription business. Cross-platform purchases built better and
979 more words follow in the initial HTML.
| Check | Result | Detail |
|---|---|---|
| H1 in the initial HTML | Found one H1 | First H1: Build and grow your app business |
| First 200 words in the initial HTML | Found 200 of 200 words | The initial HTML carries 1179 words of visible text; the first 200 are marked in the left pane. |
| llms.txt present and linked | Note present, not linked | 12041 bytes, 60 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 request | Missing 200 text/html | Accept: text/markdown returned 200 with text/html; charset=utf-8. The server ignores the header. |
| Status of a made-up path | Found 404 | /agent-ready-html-missing-path-check returned 404: a real status code for a missing page. |
| JSON-LD types | Found Organization, WebPage | 2 schema.org types in JSON-LD blocks on the home page: Organization, WebPage. |
| OpenAPI link | Note none on the home page | No 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 revenuecat.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
- Ora: AgentReady launch post (Ora's lab findings) https://ora.ai/blog/agentready-launch, read 4 November 2026
- Ora check catalogue, contract 1.38.0 (132 checks, 42 in the Access layer) https://ora.ai/api/checks, read 5 November 2026
- Ora home page (the fixing product is behind a waitlist) https://ora.ai/, read 5 November 2026
- Ora: Introducing Deep Scan (repeat scans) https://ora.ai/blog/introducing-deep-scan, read 5 November 2026
- Ora llms.txt (public URLs only) https://ora.ai/llms.txt, read 5 November 2026
- Vercel: Make your site readable by AI agents https://vercel.com/kb/guide/make-your-site-readable-by-ai-agents, read 4 November 2026
- llms.txt proposal (llmstxt.org) https://llmstxt.org/, read 4 November 2026
Last reviewed 5 November 2026