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_5axPSopBwuDothNKYNa67bp1jvKB" class="VEU71W_className gb9FOq_className VEU71W_variable gb9FOq_variable" lang="en">
<head>
<meta charSet="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/>
[... 66 more head elements folded ...]
<title>Agentic Infrastructure - Vercel
</title>
<meta name="description" content="The autonomous stack for every app and agent."/>
[... 1 more head element folded ...]
<meta name="robots" content="index, max-image-preview:large"/>
[... 1 more head element folded ...]
<link rel="canonical" href="https://vercel.com"/>
[... 32 more head elements folded ...]
</head>
<body class="root isolate relative">
<div hidden=""><!--$--><!--/$-->
</div><!--$--><!--/$--><!--$--><!--/$--><a data-testid="geistcn/skip-nav-link" class="fixed -m-px overflow-hidden whitespace-nowrap border-0 top-16 left-12 z-[1000] flex items-center outline-none text-[var(--geist-link-color)] px-1 py-0 bg-[var(--geist-backgro [... 226 characters folded ...]>Skip to content</a>
<div class="flex min-w-0">
<div class="@container flex-1 min-w-0">
<header id="marketing-header" data-exclude-from-llms="" data-navigation-header="" class="peer sticky top-0 z-(--header-zindex) h-(--header-height) w-full bg-transparent data-[scrolled]:bg-background-200 data-[scrolled]:s [... 232 characters folded ...]>
<div class="mx-auto flex h-full w-full items-center gap-3 px-(--geist-page-margin) max-w-(--ds-page-width-with-margin)">
<div style="display:contents"><a id="marketing-header-logo" aria-label="Vercel" data-cdp-track="{"event":"header_logo_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 inline-flex items-center p-2 -ml-2" href="/home">
<svg viewBox="0 0 115 100" height="18" width="21" data-slot="geist-logo-svg"><g><path fill="currentColor" fill-rule="evenodd" d="M57.5 0 115 100H0z" clip-rule="evenodd"></path></g>
</svg></a>
</div>
<div id="logo-branding-menu" popover="manual" role="menu" tabindex="-1" class="m-0 w-[325px] max-w-[calc(100vw-32px)] rounded-xl border border-gray-alpha-400 bg-background-100 p-1.5 shadow-none outline-none z-[calc(var(- [... 113 characters folded ...]>
<div class="grid grid-cols-2"><button type="button" role="menuitem" class="flex min-w-0 flex-col gap-2 rounded-md p-2 text-left text-label-14 text-gray-1000 outline-none hover:bg-gray-alpha-100 focus-visible:shadow-focus-ring" aria-busy="false" aria-disabled="false" aria-label="Copy Wordmark"><span class="relative flex h-12 w-full items-center justify-center overflow-hidden rounded-md border border-gray-alpha-400 bg-background-200 px-4">
<svg viewBox="0 0 261 52" height="21" width="105" data-slot="geist-logo-svg" style="max-width:100%;height:auto">[... 1,495 characters folded ...]
</svg></span><span class="px-1">Copy Wordmark</span></button><button type="button" role="menuitem" class="flex min-w-0 flex-col gap-2 rounded-md p-2 text-left text-label-14 text-gray-1000 outline-none hover:bg-gray-alpha-100 focus-visible:shadow-focus-ring" aria-busy="false" aria-disabled="false" aria-label="Copy Logo"><span class="relative flex h-12 w-full items-center justify-center overflow-hidden rounded-md border border-gray-alpha-400 bg-background-200 px-4">
<svg viewBox="0 0 115 100" height="21" width="24" data-slot="geist-logo-svg" style="max-width:100%;height:auto"><g><path fill="currentColor" fill-rule="evenodd" d="M57.5 0 115 100H0z" clip-rule="evenodd"></path></g>
</svg></span><span class="px-1">Copy Logo</span></button>
</div>
<div class="mt-2 border-t border-gray-alpha-400 pt-2 -mx-1.5 px-2"><button type="button" role="menuitem" class="flex w-full items-center gap-3 rounded-md px-3 py-2 text-left text-label-14 text-gray-1000 hover:bg-gray-alpha-100 focus-visible:bg-gray-alpha-100 outline-none focus-visible:outline-none" aria-label="Download Brand Assets"><span class="flex size-4 shrink-0 items-center justify-center [&_svg]:max-h-full [&_svg]:max-w-full" aria-hidden="true">
<svg viewBox="0 0 16 16" height="16" width="16" data-slot="geist-icon" style="color:currentColor">[... 267 characters folded ...]
</svg></span>Download Brand Assets</button><button type="button" role="menuitem" class="flex w-full items-center gap-3 rounded-md px-3 py-2 text-left text-label-14 text-gray-1000 hover:bg-gray-alpha-100 focus-visible:bg-gray-alpha-100 outline-none focus-visible:outline-none" aria-label="Open Brand Guidelines in New Tab"><span class="flex size-4 shrink-0 items-center justify-center [&_svg]:max-h-full [&_svg]:max-w-full" aria-hidden="true">
<svg viewBox="0 0 16 16" height="16" width="16" data-slot="geist-icon" style="color:currentColor">[... 518 characters folded ...]
</svg></span>Brand Guidelines</button>
</div>
</div><span class="sr-only" aria-live="polite"></span>
<nav aria-label="Main navigation" class="flex h-full items-center max-[880px]:hidden [[data-mobile-open]_&]:!hidden" data-cdp-scope="{"name":"nav"}">
<div style="display:contents"><button type="button" class="group flex cursor-pointer items-center border-none bg-transparent text-copy-14 text-gray-900 outline-none data-[highlighted]:text-gray-1000 data-[open]:text-gray-1000" data-nav-id="products" aria-expanded="false" aria-controls="nav-panel-products"><span class="flex items-center gap-0.75 py-1.5 pr-2 pl-3 group-focus-visible:!text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]">Products<span aria-hidden="true" class="pointer-events-none transition-none data-[open]:rotate-180">
<svg viewBox="0 0 16 16" height="14" width="14" data-slot="geist-icon" style="color:currentColor" aria-hidden="true">[... 181 characters folded ...]
</svg></span></span></button>
<div id="nav-panel-products" aria-hidden="true" inert="" class="invisible data-[open]:visible fixed inset-x-0 top-(--header-height) z-(--header-zindex) bg-background-200 shadow-[0_1px_0_0_var(--ds-gray-alpha-300)] before [... 169 characters folded ...]>
<div class="mx-auto w-full px-(--geist-page-margin) max-w-(--ds-page-width-with-margin)">
<div class="flex flex-nowrap pt-1 pb-6 gap-x-4">
<div class="min-w-[250px] shrink-0">
<div class="text-label-14 text-gray-900">Agent Stack
</div>
<ul aria-label="Agent Stack" class="mt-[5px] flex list-none flex-col" role="list">
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/ai-sdk"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">AI SDK</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/ai-gateway"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">AI Gateway</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/sandbox"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Sandbox</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/passport"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Passport</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/connect"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Connect</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/eve"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">eve</span></span></a>
</li>
</ul>
</div>
<div class="min-w-[250px] shrink-0">
<div class="text-label-14 text-gray-900">Core Platform
</div>
<ul aria-label="Core Platform" class="mt-[5px] flex list-none flex-col" role="list">
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/security"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Security</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/cdn"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Content Delivery</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/fluid"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Fluid Compute</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/products/observability"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Observability</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/workflows"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Workflows</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/products/previews"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">CI/CD</span></span></a>
</li>
</ul>
</div>
<div class="min-w-[250px] shrink-0">
<div class="text-label-14 text-gray-900">Tools
</div>
<ul aria-label="Tools" class="mt-[5px] flex list-none flex-col" role="list">
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/frameworks/nextjs"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Next.js</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/agent"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Vercel Agent</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/plugin"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Vercel Plugin</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/oss"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Open Source</span></span></a>
</li>
<li><a href="https://vercel.com/domains" rel="noopener noreferrer" target="_blank" data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="null" class="cursor-pointer focus-visible:outline-2 outline [... 109 characters folded ...]><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Domains</span><span aria-hidden="true" class="inline-block font-sans no-underline ml-[0.125em]">↗</span></span></a>
</li>
<li><a href="https://v0.app" rel="noopener noreferrer" target="_blank" data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="null" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-f [... 97 characters folded ...]><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]" style="font-family:var(--font-mono);font-feature-settings:tnum"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">v0</span><span aria-hidden="true" class="inline-block font-sans no-underline ml-[0.125em]">↗</span></span></a>
</li>
</ul>
</div>
</div>
</div>
</div><button type="button" class="group flex cursor-pointer items-center border-none bg-transparent text-copy-14 text-gray-900 outline-none data-[highlighted]:text-gray-1000 data-[open]:text-gray-1000" data-nav-id="resources" aria-expanded="false" aria-controls="nav-panel-resources"><span class="flex items-center gap-0.75 py-1.5 pr-2 pl-3 group-focus-visible:!text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]">Resources<span aria-hidden="true" class="pointer-events-none transition-none data-[open]:rotate-180">
<svg viewBox="0 0 16 16" height="14" width="14" data-slot="geist-icon" style="color:currentColor" aria-hidden="true">[... 181 characters folded ...]
</svg></span></span></button>
<div id="nav-panel-resources" aria-hidden="true" inert="" class="invisible data-[open]:visible fixed inset-x-0 top-(--header-height) z-(--header-zindex) bg-background-200 shadow-[0_1px_0_0_var(--ds-gray-alpha-300)] befor [... 171 characters folded ...]>
<div class="mx-auto w-full px-(--geist-page-margin) max-w-(--ds-page-width-with-margin)">
<div class="flex flex-nowrap pt-1 pb-6 gap-x-4">
<div class="min-w-[250px] shrink-0">
<div class="text-label-14 text-gray-900">Learn
</div>
<ul aria-label="Learn" class="mt-[5px] flex list-none flex-col" role="list">
<li><a href="/docs" data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="667155" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Docs</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/about"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">About</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/blog"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Blog</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/changelog"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Changelog</span></span></a>
</li>
<li><a href="/kb" data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="667155" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Knowledge Base</span></span></a>
</li>
</ul>
</div>
<div class="min-w-[250px] shrink-0">
<div class="text-label-14 text-gray-900">Build
</div>
<ul aria-label="Build" class="mt-[5px] flex list-none flex-col" role="list">
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/ai"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">AI Apps</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/for/web-apps"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Web Apps</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/solutions/marketing-sites"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Marketing Sites</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/for/platforms"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Platforms</span></span></a>
</li>
<li><a data-cdp-track="{"event":"nav_menu_item_clicked"}" data-zone="same" class="cursor-pointer focus-visible:outline-2 outline-[var(--ds-focus-color)] outline-offset-4 group inline-flex w-full no-underline focus-visible:outline-none!" href="/for/retail"><span class="inline-flex items-center gap-1 text-label-20 text-gray-1000 group-focus-visible:![box-shadow:var(--ds-focus-ring)]"><span class="decoration-1 underline-offset-[5px] group-hover:underline group-hover:decoration-gray-500 group-aria-[current=page]:underline group-aria-[current=page]:decoration-gray-500">Commerce</span></span></a>
</li>
</ul>
Shown with 340 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 578 KB.
Reading view the text a plain-fetch client can extract
title: Agentic Infrastructure - Vercel
Agentic Infrastructure
Skip to content Copy Wordmark Copy Logo Download Brand Assets Brand Guidelines Products Agent Stack AI SDK AI Gateway Sandbox Passport Connect eve Core Platform Security Content Delivery Fluid Compute Observability Workflows CI/CD Tools Next.js Vercel Agent Vercel Plugin Open Source Domains↗ v0↗ Resources Learn Docs About Blog Changelog Knowledge Base Build AI Apps Web Apps Marketing Sites Platforms Commerce Explore Customers Marketplace Partner Finder AWS Community↗ Enterprise Pricing Get a Demo Log In Sign Up Ask AI Dashboard Products Agent Stack AI SDK AI Gateway Sandbox Passport Connect eve Core Platform Security Content Delivery Fluid Compute Observability Workflows CI/CD Tools Next.js Vercel Agent Vercel Plugin Open Source Domains↗ v0↗ Resources Learn Docs About Blog Changelog Knowledge Base Build AI Apps Web Apps Marketing Sites Platforms Commerce Explore Customers Marketplace Partner Finder AWS Community↗ Enterprise Pricing Get a Demo Log In Sign Up Drop to deployLoading Agentic Infrastructure To ship apps and agentsFor coding agentsFor coding agents to ship apps and agents automated by agents. Deploy now Talk to sales For coding agents to deploy in their native language, with Vercel's API, CLI, MCP, and Skills. To ship apps and agents in Sandboxed VMs, with durable backends, powered by 400+
325 more words follow in the initial HTML.
| Check | Result | Detail |
|---|---|---|
| H1 in the initial HTML | Found one H1 | First H1: Agentic Infrastructure |
| First 200 words in the initial HTML | Found 200 of 200 words | The initial HTML carries 525 words of visible text; the first 200 are marked in the left pane. |
| llms.txt present and linked | Note present, not linked | 2267 bytes, 10 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 request | Found text/markdown | Accept: text/markdown returned 200 with text/markdown; charset=utf-8. Vary: Accept is set. |
| Status of a made-up path | Missing 200 (soft 404) | /agent-ready-html-missing-path-check returned 200. A missing page that answers 200 looks like a live page to an agent. |
| JSON-LD types | Found ContactPoint, ImageObject, Offer, Organization and 4 more | 8 schema.org types in JSON-LD blocks on the home page: ContactPoint, ImageObject, Offer, Organization, Person, PostalAddress, Service, SoftwareApplication. |
| 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 vercel.app.
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