https://www.spacex.com/

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    "siteName": null,
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            "details": "Missing <article> and <main> elements"
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          "proper_heading_hierarchy": {
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          "robots_allows_ai_bots": {
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            "details": "No robots.txt — AI bots allowed by default"
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          "has_sitemap": {
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            "details": "No sitemap found"
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          "supports_markdown_negotiation": {
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            "weight": 25,
            "details": "All OG tags present"
          },
          "has_meta_description": {
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            "weight": 20,
            "details": "Meta description: 209 chars"
          },
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            "details": "No canonical URL"
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            "details": "lang=\"en\""
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        }
      },
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        "checks": {
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            "details": "Content available without JavaScript"
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            "details": "Page size: 3KB"
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            "details": "Main content starts at 100% of HTML"
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  },
  "recommendations": [
    {
      "id": "add_llms_txt",
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      "checkDetails": "No llms.txt found"
    },
    {
      "id": "add_article_main",
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      "category": "semanticHtml",
      "titleKey": "rec.add_article_main.title",
      "descriptionKey": "rec.add_article_main.description",
      "howToKey": "rec.add_article_main.howto",
      "effort": "quick-win",
      "estimatedImpact": 8,
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    {
      "id": "fix_heading_hierarchy",
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      "descriptionKey": "rec.fix_heading_hierarchy.description",
      "howToKey": "rec.fix_heading_hierarchy.howto",
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      "estimatedImpact": 6,
      "checkScore": 0,
      "checkDetails": "No headings found"
    },
    {
      "id": "improve_content_ratio",
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      "category": "contentEfficiency",
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      "descriptionKey": "rec.improve_content_ratio.description",
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      "checkDetails": "Content ratio: 0.0% (0 content chars / 3579 HTML bytes)"
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    {
      "id": "add_robots_txt",
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      "category": "aiDiscoverability",
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      "descriptionKey": "rec.add_robots_txt.description",
      "howToKey": "rec.add_robots_txt.howto",
      "effort": "quick-win",
      "estimatedImpact": 5,
      "checkScore": 0,
      "checkDetails": "No robots.txt found"
    },
    {
      "id": "add_sitemap",
      "priority": "critical",
      "category": "aiDiscoverability",
      "titleKey": "rec.add_sitemap.title",
      "descriptionKey": "rec.add_sitemap.description",
      "howToKey": "rec.add_sitemap.howto",
      "effort": "quick-win",
      "estimatedImpact": 5,
      "checkScore": 0,
      "checkDetails": "No sitemap found"
    },
    {
      "id": "add_markdown_negotiation",
      "priority": "critical",
      "category": "aiDiscoverability",
      "titleKey": "rec.add_markdown_negotiation.title",
      "descriptionKey": "rec.add_markdown_negotiation.description",
      "howToKey": "rec.add_markdown_negotiation.howto",
      "effort": "significant",
      "estimatedImpact": 4,
      "checkScore": 0,
      "checkDetails": "No markdown content negotiation"
    },
    {
      "id": "add_content_signals",
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      "category": "aiDiscoverability",
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    {
      "id": "add_schema_org",
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      "category": "structuredData",
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      "howToKey": "rec.add_schema_org.howto",
      "effort": "moderate",
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      "checkDetails": "No JSON-LD / Schema.org found"
    },
    {
      "id": "move_content_earlier",
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      "category": "accessibility",
      "titleKey": "rec.move_content_earlier.title",
      "descriptionKey": "rec.move_content_earlier.description",
      "howToKey": "rec.move_content_earlier.howto",
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    }
  ],
  "llmsTxtPreview": "# spacex.com\n\n> SpaceX designs, manufactures and launches advanced rockets and spacecraft. The company was founded in 2002 to revolutionize space technology, with the ultimate goal of enabling people to live on other planets.\n\n## Main\n- [SpaceX](https://www.spacex.com/): SpaceX designs, manufactures and launches advanced rockets and spacecraft. The company was founded in 2002 to revolutio…\n\n",
  "llmsTxtExisting": null,
  "snippets": [
    {
      "id": "add_llms_txt",
      "title": "Create /llms.txt",
      "description": "Upload this file to your web root. It tells AI agents what your site is about and which pages matter.",
      "language": "markdown",
      "code": "# spacex.com\n\n> SpaceX designs, manufactures and launches advanced rockets and spacecraft. The company was founded in 2002 to revolutionize space technology, with the ultimate goal of enabling people to live on other planets.\n\n## Main\n- [SpaceX](https://www.spacex.com/): SpaceX designs, manufactures and launches advanced rockets and spacecraft. The company was founded in 2002 to revolutio…\n\n",
      "filename": "/llms.txt"
    },
    {
      "id": "fix_heading_hierarchy",
      "title": "Fix heading hierarchy",
      "description": "Your page has no <h1>. Every page needs exactly one <h1> as the main heading. Add it inside your <main> or <article>.",
      "language": "html",
      "code": "<h1>SpaceX</h1>",
      "filename": "<main> or <article>"
    },
    {
      "id": "add_schema_org",
      "title": "Add Schema.org JSON-LD",
      "description": "Structured data helps AI agents understand the type, author, and purpose of your content.",
      "language": "html",
      "code": "<script type=\"application/ld+json\">\n{\n  \"@context\": \"https://schema.org\",\n  \"@type\": \"WebPage\",\n  \"name\": \"SpaceX\",\n  \"description\": \"SpaceX designs, manufactures and launches advanced rockets and spacecraft. The company was founded in 2002 to revolutionize space technology, with the ultimate goal of enabling people to live on other planets.\",\n  \"url\": \"https://www.spacex.com/\",\n  \"inLanguage\": \"en\"\n}\n</script>",
      "filename": "<head>"
    },
    {
      "id": "add_robots_txt",
      "title": "Create /robots.txt",
      "description": "A robots.txt file tells crawlers (including AI bots) what they can and cannot access.",
      "language": "txt",
      "code": "User-agent: *\nAllow: /\n\nSitemap: https://www.spacex.com/sitemap.xml",
      "filename": "/robots.txt"
    },
    {
      "id": "add_sitemap",
      "title": "Create /sitemap.xml",
      "description": "A sitemap helps AI agents discover all your pages. Most CMS platforms generate one automatically.",
      "language": "xml",
      "code": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n  <url>\n    <loc>https://www.spacex.com/</loc>\n    <lastmod>2026-02-15</lastmod>\n  </url>\n</urlset>",
      "filename": "/sitemap.xml"
    },
    {
      "id": "add_article_main",
      "title": "Wrap content in <main> and <article>",
      "description": "Semantic HTML landmarks help AI agents identify the main content of your page.",
      "language": "html",
      "code": "<main>\n  <article>\n    <h1>Your Page Title</h1>\n    <p>Your content here...</p>\n  </article>\n</main>",
      "filename": "<body>"
    },
    {
      "id": "add_content_signals",
      "title": "Add Content-Signal HTTP header",
      "description": "The Content-Signal header tells AI agents about the nature of your content. Add it via your web server or CDN.",
      "language": "nginx",
      "code": "# Nginx — add to your server block:\nadd_header Content-Signal \"type=website; lang=en\" always;\n\n# Apache — add to .htaccess:\n# Header set Content-Signal \"type=website; lang=en\"",
      "filename": "nginx.conf or .htaccess"
    },
    {
      "id": "add_markdown_negotiation",
      "title": "Support Accept: text/markdown",
      "description": "When a client sends Accept: text/markdown, respond with a Markdown version of the page. This is the gold standard for AI-readiness.",
      "language": "nginx",
      "code": "# Nginx — serve .md files when client requests Markdown:\n# Option 1: Serve pre-generated .md files\nmap $http_accept $markdown_suffix {\n  default \"\";\n  \"~text/markdown\" \".md\";\n}\n\n# Then in your location block:\ntry_files $uri$markdown_suffix $uri =404;\n\n# Option 2: Use your app framework to check the Accept header\n# and return Markdown content with Content-Type: text/markdown",
      "filename": "nginx.conf or application code"
    }
  ]
}

APIを使用してプログラムで取得できます（近日公開）