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URL Backlink Checker

Know what powers any single page

Check a URL's backlinks, authority, spam score, ranking keywords and content. Research in Seonio, call the REST API or ask your AI assistant.

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$1 testing balanceNo card required 4.9 in reviews
BacklinksAuthority
412ref. domains
58DA
2%spam
Ranking keywordsPosition
how to choose trail shoes#1
trail shoe lug depth#2
trail running shoes guide#3
ContentMarkdown
# How to choose trail running shoes
## Grip and lug depth
2,140 words · markdown
Delivered to Seonio appREST APIMCP
Example data
Inside the tool

Everything that makes one page rank

Authority, the links behind it, the keywords it wins and the content itself, for any URL.

Page strength

See how strong a page really is

Page and domain authority, linking root domains and the top backlinks with anchor text, plus unique linking pages, nofollow share and spam score.

  • Page authority and domain authority
  • Linking root domains and top backlinks
  • Nofollow share and spam score
seonio / url backlink checkerExample data
example-outdoor.com/blog/trail-shoe-guide
Referring domains412
Domain authority58
Spam score2%
Referring domainDABarSpam
runners-journal.example71
1%
gearlab-reviews.example64
3%
alpine-club.example49
2%
free-links-dir.example12
61%
From URL to outreach

How a URL audit runs

Start with a page that ranks and leave with the links and keywords behind it.

$0.002 / requestAuthority metrics via REST API and MCP
$0.02 / requestRanking keywords for a URL
Spam scoreVet link prospects in seconds
5–20 requests / secondREST API and MCP limit, by plan
REST API · MCP server

Page data in your code and your AI assistant

Call the URL endpoints with your API key, or let ChatGPT, Claude or Cursor query them through MCP. Same prices, same balance.

Which keywords does example-outdoor.com/blog/trail-shoe-guide rank for?
· URL keywords
KeywordVolumePosition
how to choose trail shoes2,400#1
trail shoe lug depth590#2
trail running shoes guide8,100#3

The guide holds the top spot for “how to choose trail shoes” and sits at #3 for “trail running shoes guide”, the bigger term at 8,100 searches a month. Want me to check the backlinks of the page ranking #1 there?

// Example only: see the setup guide for your client
{ "mcpServers": { "seonio": {
    "type": "http", "url": "https://seonio.com/mcp" } } }

Client-specific steps for ChatGPT, Claude, Cursor and more are in the MCP setup guide.

RequestPOST /api/v1/url/stats
curl -X POST https://seonio.com/api/v1/url/stats \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $SEONIO_API_KEY" \
  -d '{"target": "https://moz.com/blog"}'
Response200 OK
{
  "target": "https://moz.com/blog",
  "seo_metrics": {
    "page_authority": 70,
    "domain_authority": 91,
    "spam_score": 1,
    "linking_domains": 10965,
    "linking_pages": 461135,
    "nofollow_pages": 7409
  }
}
POST/keywords/global$0.001 / keyword
POST/website/traffic$0.01 / request
POST/backlink/table$0.02 / request
Customers

What our users say

Results reported by Seonio users.

185%ROI
Seonio’s unique similarity score showed us trending keywords we’d never thought of implementing in our ad campaigns and landing pages.
Alex M.SEO Manager
127%Conversion rate
The Spam Score and DA metrics are essential for our link-building outreach. We now can vet prospects in seconds, saving us hours each week.
Priya S.Agency Owner
314%Organic traffic
$10/mo is a no-brainer. Knowing what our potential clients actually search and our competition is ranking for, has shifted our whole online marketing strategy.
Konrad L.Dentist
Pricing

Plans that scale with your usage

Create a free account with $1 to test Seonio. Subscribe when you are ready for monthly usage and Extra Usage.

Starter $15 usage each month
$15 per monthBilled $15 monthly

  • All website tools
  • REST API and MCP
  • 10 API requests per second
  • Extra Usage while active
Recommended Pro $37.50 usage each month
$30 per monthBilled $30 monthly

+25% more usage

  • All website tools
  • REST API and MCP
  • 15 API requests per second
  • Extra Usage while active
Business $90 usage each month
$60 per monthBilled $60 monthly

+50% more usage

  • All website tools
  • REST API and MCP
  • 20 API requests per second
  • Extra Usage while active
FAQ

Questions, answered

The tool, usage, billing and coverage in plain words.

Page and domain authority, linking root domains, unique linking pages, top backlinks, nofollow share, spam score, the keywords the page ranks for with position and volume, related URLs and the page content as markdown.

It flags signals that are common on low-quality or manipulative sites. Use it to vet link prospects and to avoid copying risky link strategies; it is not a penalty verdict.

Every dataset has a published dollar price, drawn from one balance. Through the REST API and MCP, URL stats cost $0.002 / request and ranking keywords $0.02 / request. In the Seonio app, datasets you already paid for on a report page load for $0 when you return within 7 days.

$1 testing balance · No card required

Turn search insights into measurable growth

Start your SEO research in seconds.

SEO researchREST APIMCP