SEO Audit API - On-Page Score

On-page SEO audit of any URL in one call: score 0-100 and a clear list of issues (title, meta description, H1, canonical, noindex, alt texts, lang, viewport, Open Graph, thin content, speed, HTTPS).

Authentication & base URL

Subscribe through one of our marketplace listings; your marketplace API key and base URL are shown there. All endpoints return JSON over HTTPS, served from a global edge network (typically 20–150 ms).

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Endpoints

GET `/v1/seo`

Audit page

Parameter	In	Description	Example
`url` *	query	Page URL	`https://example.com`

Example

GET /v1/seo?url=https%3A%2F%2Fexample.com

{
  "url": "https://example.com/",
  "finalUrl": "https://example.com/",
  "status": 200,
  "score": 53,
  "issues": [
    "Title too short (14)",
    "Missing meta description",
    "Missing H1",
    "No canonical link",
    "Missing html lang",
    "Missing viewport meta",
    "No Open Graph tags",
    "Thin content (27 words)"
  ],
  "title": "Example Domain",
  "titleLength": 14,
  "metaDescription": null,
  "metaDescriptionLength": 0,
  "h1": [],
  "h1Count": 0,
  "imageCount": 0,
  "imagesWithoutAlt": 0,
  "canonical": null,
  "lang": null,
  "noindex": false,
  "wordCount": 27,
  "responseMs": 14
}

On-page SEO audit of any URL in one call: score 0-100 and a clear list of issues (title, meta description, H1, canonical, noindex, alt texts, lang, viewport, Open Graph, thin content, speed, HTTPS).

Use cases

SEO dashboards, agency reports, CMS plugins, pre-publish checks, monitoring landing pages.

Why this API

Fast: runs on a global edge network, typical response well under 1 second.
Reliable: simple JSON, clear error messages.
Fair pricing: Free plan 500 requests/month, Pro 25,000 for $4.99, Ultra 150,000 for $14.99.

Pricing

Free plan with 500 calls per month, then Pro (25,000 calls for $4.99/month) and Ultra (150,000 calls for $14.99/month). See all plans.