Domain Rating
Traffic
Keywords
SERP
Indexing

The SEO metrics you need, without the enterprise contract

Same data. Same quality. 80% cheaper than direct providers.

Ahrefs-powered authority and organic traffic, Similarweb-style visit estimates, keyword volumes, SERP checks and Google index status — for any domain, in one JSON call. A Similarweb seat starts at $149/month and its API is a sales call; our paid plans start at $5 and the free tier is a form away.

Check a domain free See pricing

No credit card. 100 free API credits every month.

Get your free API key

100 credits / month · 30 requests / minute · no card

One key, every metric

Everything the expensive dashboards charge separately for

Authority, traffic, keywords, SERP, index status, link indexing and link-graph risk under one key. Each response tells you which provider answered and when it was fetched — numbers on the wire, never mystery strings.

Domain authority

Domain Rating (0–100) and Ahrefs Rank straight from the Ahrefs API — the same numbers agencies quote in every audit and link-building pitch.

Ahrefs API alternative

Traffic, two ways

Similarweb-style total visits and Ahrefs organic estimates in the same response — with engagement, top countries and popularity ranks alongside.

Similarweb API alternative

Keywords & SERP

Search volume, difficulty and CPC per keyword, plus live SERP snapshots for any query and country — the research half of an SEO toolkit, by API.

Browse the endpoints

Google index checker

Is a page — or a whole domain — in Google's index? One call answers with evidence: the sample results Google returned, the engine that answered, and a link to verify it yourself.

Google index checker API

Link indexing

Submit the URLs you need crawled — new pages, fresh backlinks, updated content — to a standard queue, or an advanced queue Googlebot follows within minutes. Charged per URL, up front, with a task id to poll.

Link indexing API

Spam score

Moz Spam Score — the share of sites with a similar link profile that were penalised — with Moz Domain Authority and backlink counts, on the link-graph endpoint. Enabled per key on request; until the Moz credential is configured on this deployment the fields answer null with status: "disabled".

Spam score API

How it works

From signup to metrics in three steps

01

Grab a key

02

Call one endpoint

Ask /v1/domains/<domain> for the field groups you need — rating, traffic, countries, engagement and more.

03

Read honest numbers

Every field carries its provider and fetch time. null means unknown — never a silent zero.

$ curl -H "Authorization: Bearer sk_live_…" \
    "https://seometricsapi.com/v1/domains/apnews.com?fields=rating,traffic"

{
  "data": {
    "domain": "apnews.com",
    "domain_rating": 91,
    "ahrefs_rank": 412,
    "monthly_visits": 105300000,
    "organic_monthly_visits": 38200000,
    "sources": {
      "domain_rating": { "provider": "ahrefs", "status": "ok" },
      "monthly_visits": { "provider": "similarweb", "status": "ok" }
    }
  },
  "meta": { "cache": "hit", "cost_units": 0 }
}

0

Data providers per lookup

Ahrefs authority data and Similarweb-style traffic estimates answer the same request, side by side.

$0

Where paid plans start

4,000 credits a month. A Similarweb seat starts at $149 — and still doesn't include API access.

0

Free credits, every month

The free tier renews monthly. Cached lookups cost 0 credits, so light use stays free for good.

Pricing

Same data, a fraction of the invoice

Monthly plans or prepaid credit packs. Start free, upgrade when your quota does.

Basic

$5/month

4,000 credits / month

60 requests / minute

Starter

$20/month

20,000 credits / month

120 requests / minute

Growth

$80/month

95,000 credits / month

300 requests / minute

Larger plans are available from your dashboard's Billing section. Competitor prices quoted on this page are their published entry list prices as of August 2026 and change at their discretion; check their sites for current figures.

Full pricing & credit packs

From the blog

Learn the metrics before you build on them

Dashboard tiles illustrating core SEO metrics

The SEO metrics that are actually worth tracking

Ten numbers explain most ranking outcomes. Here's what each one means and when to ignore it.

Two diverging traffic lines being compared

How to check Ahrefs vs Similarweb traffic at the same time

The two estimates disagree by design. Comparing them side by side is the honest way to read either.

How to improve your DR and traffic, quickly but honestly

What actually moves Domain Rating and organic visits — and the shortcuts that quietly backfire.

All articles

See it work on your domain first

The free checker runs the same API paying customers use — 3 checks a day, no account.

Open the free SEO checker

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100 free credits a month, forever. Upgrade only when you outgrow them.

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SEO Metrics API is an independent service and is not affiliated with, endorsed by or sponsored by Ahrefs, Similarweb or Semrush. Authority and organic-traffic metrics are retrieved from the Ahrefs API under our own subscription; visit estimates come from third-party Similarweb-style datasets. All traffic figures are estimates, not analytics.