substack.com

No JSON-LD blocks found. Add a <script type="application/ld+json"> with a schema.org type for this page.

Fix: Add a <script type="application/ld+json"> describing the page (Organization, Article, Product, FAQPage).

No HTTP Link: response headers. Emit canonical/alternate/describedby relations so HEAD-only or stream-rendering agents get them without parsing HTML.

Fix: Emit `Link:` headers for canonical, alternate-language, and describedby relations. Agents that fetch HEAD-only or stream-render rely on these.

Visible text is 0.4% of HTML weight (1312/292078 bytes). Low. Markup may be crowding out agent-usable text.

Fix: Heavy ad or navigation markup crowds out agent-usable text. Aim for a text-to-DOM ratio above 15%.

Meta description is 30 characters; aim for 50–200 so it's neither thin nor truncated.

Fix: Add `<meta name="description" content="...">` to your primary pages. Agents frequently use it as a summary.

Heading issues: no <h1>.

Fix: Use a single H1 and avoid skipping heading levels (H1 → H3).

No Content-Signal directives. Add e.g. `Content-Signal: ai-train=no, ai-summarize=yes` to declare granular AI usage policy beyond binary allow/disallow.

Fix: Add `Content-Signal:` directives to your robots.txt. This is the emerging standard (Cloudflare-driven) for declaring fine-grained AI usage policy beyond a binary allow/disallow.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Substack",
  "url": "https://substack.com/",
  "description": "The app for independent voices"
}
</script>

This scan shows whether an agent can read the site. One free probe asks a real assistant a real buying question and records who it cited.

This graded your homepage. Your pricing, docs, and checkout live on other pages — the ones assistants actually quote when they recommend you — and a 67/100 here means agents are already missing things on the page you polish most. The $29 Deep Scan audits the whole site against all 31 checks, then emails a PDF with every failing check and its exact fix, ranked by what costs you the most visibility. One-time, delivered in minutes, no subscription.

Substack Home Subscriptions Chat Activity Explore Profile Create Make money doing the work you believe in Start your Substack Learn more For you Aaron Parnas 1d Subscribe Shoutout to Kaitlan Collins 3.2K 56 404 The Conscious Lee 1d Subscribe 17 year old boy murdered by Cops for water bottle mistaken as gun… 406 34 163 Sari Botton 1h Subscribe “Each year in the U.S. about 2 million couples make their way toward the altar, uttering the magic words “I do.” But maybe they should be asking questions, instead.” - Another great illustrated essay by Oldster Magazine contributor Peter Moore . Oldster Magazine The Six Big Questions of Married Life 10 1 2 You made it, you own it You always own your intellectual property, mailing list, and subscriber payments. With full editorial control and no gatekeepers, you can do the work you most believe in. Start your Substack Learn more Fit Foodie Stasia 7d Subscribe The Fit Foodie Community Roasted Honey Mustard Chicken & Broccoli 18 2 2 Ella Emhoff 21h Subscribe Everyone say hi to Dean. 294 17 4 Great discussions Join the most interesting and insightful discussions. Start your Substack Learn more Rosie Birkett 4h Subscribe First cosmos! 9 2 Log in or sign up Join the most interesting and insightful discussions. Start your Substack Sign in Get app

Running AI agents of your own? AgentSpeed also monitors them in production — every run, its latency, cost, and failures, with alerts when something breaks. Free for 10,000 events a month, no credit card.