{
"url": "https://example.com/",
"finalUrl": "https://example.com/",
"ok": true,
"score": 29,
"maxScore": 100,
"grade": "F",
"geoScore": 40,
"statusCode": 200,
"responseTimeMs": 16,
"pageBytes": 577,
"truncated": false,
"checks": [
{
"id": "title_present",
"category": "meta",
"label": "Title tag present",
"status": "pass",
"points": 8,
"maxPoints": 8,
"details": "Title: \"Example Domain\"",
"fix": null
},
{
"id": "title_length",
"category": "meta",
"label": "Title length 30-60 chars",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "Title is 14 characters.",
"fix": "Rewrite the title to 30-60 characters so it is not truncated in search results."
},
{
"id": "description_present",
"category": "meta",
"label": "Meta description present",
"status": "fail",
"points": 0,
"maxPoints": 8,
"details": "No meta description found.",
"fix": "Add a meta description of 70-160 characters summarising the page."
},
{
"id": "description_length",
"category": "meta",
"label": "Description length 70-160 chars",
"status": "fail",
"points": 0,
"maxPoints": 4,
"details": "No description to measure.",
"fix": "Adjust the meta description to 70-160 characters."
},
{
"id": "canonical_present",
"category": "meta",
"label": "Canonical URL declared",
"status": "warn",
"points": 0,
"maxPoints": 3,
"details": "No rel=canonical link found.",
"fix": "Add <link rel=\"canonical\"> pointing at the preferred URL for this page."
},
{
"id": "viewport_present",
"category": "meta",
"label": "Viewport meta present (mobile)",
"status": "warn",
"points": 0,
"maxPoints": 3,
"details": "No viewport meta found.",
"fix": "Add <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">."
},
{
"id": "h1_single",
"category": "content",
"label": "Exactly one H1 heading",
"status": "fail",
"points": 0,
"maxPoints": 8,
"details": "No H1 found.",
"fix": "Use exactly one H1 that states the page's main topic."
},
{
"id": "h2_present",
"category": "content",
"label": "H2 subheadings present",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "0 H2 heading(s) found.",
"fix": "Structure the page with H2 subheadings for each main section."
},
{
"id": "word_count",
"category": "content",
"label": "At least 300 words of visible text",
"status": "fail",
"points": 0,
"maxPoints": 6,
"details": "27 words of visible text.",
"fix": "Expand the page copy to at least 300 words of substantive, server-rendered text."
},
{
"id": "image_alt",
"category": "content",
"label": "Image alt text coverage >= 80%",
"status": "pass",
"points": 4,
"maxPoints": 4,
"details": "No <img> tags on the page.",
"fix": null
},
{
"id": "lang_present",
"category": "content",
"label": "html lang attribute present",
"status": "warn",
"points": 0,
"maxPoints": 3,
"details": "No lang attribute on <html>.",
"fix": "Add a lang attribute to the <html> tag, e.g. <html lang=\"en\">."
},
{
"id": "https",
"category": "technical",
"label": "Served over HTTPS",
"status": "pass",
"points": 6,
"maxPoints": 6,
"details": "Final URL: https://example.com/",
"fix": null
},
{
"id": "status_200",
"category": "technical",
"label": "HTTP status 200",
"status": "pass",
"points": 6,
"maxPoints": 6,
"details": "Status: 200",
"fix": null
},
{
"id": "indexable",
"category": "technical",
"label": "Page is indexable (no noindex)",
"status": "pass",
"points": 5,
"maxPoints": 5,
"details": "No noindex directive; Googlebot allowed.",
"fix": null
},
{
"id": "robots_txt",
"category": "technical",
"label": "robots.txt present",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "No robots.txt at the origin root.",
"fix": "Publish a robots.txt at the site root with your crawl rules and sitemap location."
},
{
"id": "sitemap",
"category": "technical",
"label": "XML sitemap discoverable",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "No sitemap found via robots.txt or /sitemap.xml.",
"fix": "Generate an XML sitemap and reference it from robots.txt with a Sitemap: line."
},
{
"id": "og_tags",
"category": "social",
"label": "Open Graph tags present",
"status": "warn",
"points": 0,
"maxPoints": 6,
"details": "No og: tags found.",
"fix": "Add og:title, og:description, og:image and og:type so shared links render properly."
},
{
"id": "twitter_card",
"category": "social",
"label": "Twitter card declared",
"status": "warn",
"points": 0,
"maxPoints": 3,
"details": "No twitter:card meta found.",
"fix": "Add <meta name=\"twitter:card\" content=\"summary_large_image\">."
},
{
"id": "jsonld_present",
"category": "social",
"label": "JSON-LD structured data present",
"status": "warn",
"points": 0,
"maxPoints": 7,
"details": "No JSON-LD structured data found.",
"fix": "Add JSON-LD structured data (e.g. Article, Product, WebPage) describing the page entity."
},
{
"id": "jsonld_valid",
"category": "social",
"label": "JSON-LD parses as valid JSON",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "No JSON-LD to validate.",
"fix": "Fix the JSON-LD syntax so search engines and AI systems can parse it."
}
],
"geo": {
"score": 40,
"aiCrawlerAccess": {
"GPTBot": "allowed",
"ClaudeBot": "allowed",
"PerplexityBot": "allowed",
"Google-Extended": "allowed",
"CCBot": "allowed"
},
"llmsTxt": false,
"checks": [
{
"id": "llms_txt",
"label": "llms.txt present for AI systems",
"status": "warn",
"points": 0,
"maxPoints": 25,
"details": "No llms.txt at the origin root.",
"fix": "Publish an llms.txt that summarises the site and links its key pages for AI systems."
},
{
"id": "ai_crawlers",
"label": "AI crawlers allowed in robots.txt",
"status": "pass",
"points": 30,
"maxPoints": 30,
"details": "GPTBot: allowed; ClaudeBot: allowed; PerplexityBot: allowed; Google-Extended: allowed; CCBot: allowed.",
"fix": null
},
{
"id": "geo_structured_data",
"label": "Structured data available to AI/search parsers",
"status": "fail",
"points": 0,
"maxPoints": 15,
"details": "No JSON-LD found.",
"fix": "Add valid JSON-LD describing the page entity so AI systems can cite it accurately."
},
{
"id": "geo_metadata",
"label": "Title and description complete for citation snippets",
"status": "warn",
"points": 5,
"maxPoints": 10,
"details": "Title: present; description: missing.",
"fix": "Complete the title and meta description; AI answers quote them when citing pages."
},
{
"id": "geo_server_rendered",
"label": "Content readable without JavaScript (>= 300 words raw HTML)",
"status": "fail",
"points": 0,
"maxPoints": 10,
"details": "27 words in raw HTML."
}
]
},
"_note": "Response truncated for documentation purposes"
}
curl --location --request GET 'https://zylalabs.com/api/14801/seoscore+api/38378/audit+one+page?url=https://example.com' --header 'Authorization: Bearer YOUR_API_KEY'
{
"results": [
{
"url": "https://example.com/",
"finalUrl": "https://example.com/",
"ok": true,
"score": 29,
"maxScore": 100,
"grade": "F",
"geoScore": 40,
"statusCode": 200,
"responseTimeMs": 17,
"pageBytes": 577,
"truncated": false,
"checks": [
{
"id": "title_present",
"category": "meta",
"label": "Title tag present",
"status": "pass",
"points": 8,
"maxPoints": 8,
"details": "Title: \"Example Domain\"",
"fix": null
},
{
"id": "title_length",
"category": "meta",
"label": "Title length 30-60 chars",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "Title is 14 characters.",
"fix": "Rewrite the title to 30-60 characters so it is not truncated in search results."
},
{
"id": "description_present",
"category": "meta",
"label": "Meta description present",
"status": "fail",
"points": 0,
"maxPoints": 8,
"details": "No meta description found.",
"fix": "Add a meta description of 70-160 characters summarising the page."
},
{
"id": "description_length",
"category": "meta",
"label": "Description length 70-160 chars",
"status": "fail",
"points": 0,
"maxPoints": 4,
"details": "No description to measure.",
"fix": "Adjust the meta description to 70-160 characters."
},
{
"id": "canonical_present",
"category": "meta",
"label": "Canonical URL declared",
"status": "warn",
"points": 0,
"maxPoints": 3,
"details": "No rel=canonical link found.",
"fix": "Add <link rel=\"canonical\"> pointing at the preferred URL for this page."
},
{
"id": "viewport_present",
"category": "meta",
"label": "Viewport meta present (mobile)",
"status": "warn",
"points": 0,
"maxPoints": 3,
"details": "No viewport meta found.",
"fix": "Add <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">."
},
{
"id": "h1_single",
"category": "content",
"label": "Exactly one H1 heading",
"status": "fail",
"points": 0,
"maxPoints": 8,
"details": "No H1 found.",
"fix": "Use exactly one H1 that states the page's main topic."
},
{
"id": "h2_present",
"category": "content",
"label": "H2 subheadings present",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "0 H2 heading(s) found.",
"fix": "Structure the page with H2 subheadings for each main section."
},
{
"id": "word_count",
"category": "content",
"label": "At least 300 words of visible text",
"status": "fail",
"points": 0,
"maxPoints": 6,
"details": "27 words of visible text.",
"fix": "Expand the page copy to at least 300 words of substantive, server-rendered text."
},
{
"id": "image_alt",
"category": "content",
"label": "Image alt text coverage >= 80%",
"status": "pass",
"points": 4,
"maxPoints": 4,
"details": "No <img> tags on the page.",
"fix": null
},
{
"id": "lang_present",
"category": "content",
"label": "html lang attribute present",
"status": "warn",
"points": 0,
"maxPoints": 3,
"details": "No lang attribute on <html>.",
"fix": "Add a lang attribute to the <html> tag, e.g. <html lang=\"en\">."
},
{
"id": "https",
"category": "technical",
"label": "Served over HTTPS",
"status": "pass",
"points": 6,
"maxPoints": 6,
"details": "Final URL: https://example.com/",
"fix": null
},
{
"id": "status_200",
"category": "technical",
"label": "HTTP status 200",
"status": "pass",
"points": 6,
"maxPoints": 6,
"details": "Status: 200",
"fix": null
},
{
"id": "indexable",
"category": "technical",
"label": "Page is indexable (no noindex)",
"status": "pass",
"points": 5,
"maxPoints": 5,
"details": "No noindex directive; Googlebot allowed.",
"fix": null
},
{
"id": "robots_txt",
"category": "technical",
"label": "robots.txt present",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "No robots.txt at the origin root.",
"fix": "Publish a robots.txt at the site root with your crawl rules and sitemap location."
},
{
"id": "sitemap",
"category": "technical",
"label": "XML sitemap discoverable",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "No sitemap found via robots.txt or /sitemap.xml.",
"fix": "Generate an XML sitemap and reference it from robots.txt with a Sitemap: line."
},
{
"id": "og_tags",
"category": "social",
"label": "Open Graph tags present",
"status": "warn",
"points": 0,
"maxPoints": 6,
"details": "No og: tags found.",
"fix": "Add og:title, og:description, og:image and og:type so shared links render properly."
},
{
"id": "twitter_card",
"category": "social",
"label": "Twitter card declared",
"status": "warn",
"points": 0,
"maxPoints": 3,
"details": "No twitter:card meta found.",
"fix": "Add <meta name=\"twitter:card\" content=\"summary_large_image\">."
},
{
"id": "jsonld_present",
"category": "social",
"label": "JSON-LD structured data present",
"status": "warn",
"points": 0,
"maxPoints": 7,
"details": "No JSON-LD structured data found.",
"fix": "Add JSON-LD structured data (e.g. Article, Product, WebPage) describing the page entity."
},
{
"id": "jsonld_valid",
"category": "social",
"label": "JSON-LD parses as valid JSON",
"status": "warn",
"points": 0,
"maxPoints": 4,
"details": "No JSON-LD to validate.",
"fix": "Fix the JSON-LD syntax so search engines and AI systems can parse it."
}
],
"geo": {
"score": 40,
"aiCrawlerAccess": {
"GPTBot": "allowed",
"ClaudeBot": "allowed",
"PerplexityBot": "allowed",
"Google-Extended": "allowed",
"CCBot": "allowed"
},
"llmsTxt": false,
"checks": [
{
"id": "llms_txt"
}
]
}
}
],
"_note": "Response truncated for documentation purposes"
}
curl --location --request POST 'https://zylalabs.com/api/14801/seoscore+api/38380/batch+audit' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{"urls": ["https://example.com/", "https://www.iana.org/"]}'
After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the SEOScore API simply include your bearer token in the Authorization header.
| Header | Description |
|---|---|
Authorization
|
Required
Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.
|
No long-term commitment. Upgrade, downgrade, or cancel anytime.
SEO audit API with a deterministic 0-100 score, per-check evidence, a ready fix list, and a GEO score for AI-search visibility.
Because the score is pure rules over the fetched HTML, status and headers. Timing is excluded on purpose. If a score changes, the page (or its robots.txt / llms.txt) changed.
No to both. It audits the raw HTML exactly as most crawlers first see it, and the report covers on-page and technical signals only — no invented backlink, ranking or lab metrics.
Up to 25. Each batch call returns per-URL results and the summary in a single response; larger lists should be split across calls.
How visible the page is to AI search: whether llms.txt exists, whether GPTBot, ClaudeBot, PerplexityBot, Google-Extended and CCBot are allowed by robots.txt, whether valid JSON-LD structured data is present, whether the title and description are complete enough to be quoted in an AI answer, whether the content is readable without JavaScript, and whether a canonical URL is served over HTTPS.
No. Private, loopback and link-local addresses are refused. The audit covers public pages only, and reads at most 512 KB of the page.
To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.
You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.
The free trial lasts for 7 days and allows you to make up to 50 API requests.
No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.
Yes. If the API offers a free trial, you will see a "Free 7-Day Trial" option in its Pricing section. The trial lasts for 7 days and allows up to 50 API requests, enabling you to evaluate the API before subscribing to a paid plan.
Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.
You can monitor your API usage through the response headers included with every request:
x-zyla-api-calls-monthly-used: Shows the total number of API requests you have used during the current billing period.
x-zyla-api-calls-monthly-remaining: Shows the number of API requests you have remaining for the current billing period.
Yes, you can cancel your subscription at any time. Simply go to the Pricing section of the API you're subscribed to and click the "Unsubscribe" button.
Please note that upgrades, downgrades, and cancellations take effect immediately. Once your subscription is canceled, access to the service will end immediately, regardless of any remaining API calls in your quota.
Please have a look at our Refund Policy: https://zylalabs.com/terms#refund