AI report card
Substack
substack.comLive infrastructure simulation · substack.com
Baseline
SubstackAI-Readiness Index33/100
Core Web Vitals31
Schema Coverage3%
Agent Crawlability23%
// current <head> on substack.com
<title>Substack - Home</title> <meta name="description" content="Welcome to Substack."> <!-- no JSON-LD --> <!-- no /llms.txt --> <!-- no agent manifest --> <link rel="icon" href="/favicon.ico"> <script src="/legacy-analytics.js"></script>
AI crawlers parse this and bounce — no structured signal.
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33
AI-readiness score / 100
This content provides updates from various authors on Substack, where they share personal milestones and political insights. Aaron Parnas reflects on Father's Day; V Spehar announces Wes Moore's victory in the Maryland Primary, prompting a discussion on his campaign; Ted Gioia critiques college sports and gambling practices; Kareem Rahma humorously recalls an email he sent seeking a job from Instagram's founder. The platform emphasizes control over intellectual property and subscriptions for creators, promoting the idea of maintaining one's audience and editorial autonomy.
Breakdown
Schema.org Coverage0
Crawler Accessibility80
Content Structure60
Metadata Quality25
AI Directives (llms.txt)0
What's holding Substack back
- Missing /llms.txt manifestsubstack.com does not expose an /llms.txt file. AI crawlers cannot discover canonical content fast.
- No Schema.org JSON-LD detectedNo structured data found on the homepage of substack.com. LLMs rely on JSON-LD for entity grounding.
- No H1 tag detectedAI chunkers expect exactly one H1 per page for clean semantic hierarchy.
- Open Graph metadata incompleteog:description and og:image missing.
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