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UnifAPI pricing and alternatives: domain authority API, POST /seo/backlinks/summary

UnifAPI's sitellms.txtBest domain authority API in 2026: pricing comparedUnifAPI: domain authority API alternatives

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80% complete: 4 of the 5 key fields we checkSee the 5 fields
$50.00per 1,000 domainsHalf of the 69 plans we rank by price cost $5.00 per 1,000 domains or less. This plan is cheaper than 2% of the 69 plans.DataForSEO's top-up from $50 costs the least per 1,000 domains: $0.036.AnyAPI, DataForSEO and SE Ranking are the best domain authority API providers in our benchmark.
Plan: Pay-as-you-go one of UnifAPI's 3 plans
Call: POST /seo/backlinks/summary one of UnifAPI's 2 calls for this API
API: Domain authority API one of UnifAPI's 68 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 4 of the 5 key fields we check. Spam score, Backlinks, Referring domains, Referring pages.
  • A balance you top up. You pay any amount. You spend the whole balance on calls.
  • One call. You send target to POST /seo/backlinks/summary. The call returns the domain's authority score.
  • Anyone can get it. Keep data: no limit. Use data: with conditions.

UnifAPI: domain authority API alternatives

We list other providers' plans closest to this plan in price per 1,000 domains.

This planUnifAPI, top-up, Pay-as-you-go, POST /seo/backlinks/summaryDataForSEO, top-up from $50, Pay as you go, POST /v3/backlinks/summary/liveAnyAPI, top-up from $10, Manual top-up, POST /v1/run/seo.backlinks_summaryAhrefs, $129 monthly, Lite, GET /v3/site-explorer/domain-rating1Lookup, $99 monthly, Starter, POST /domain-authority
$ per 1,000 domains$50.00$24.036$28.85$32.25$49.50
Completeness80%100%100%20%20%
Billingpay firstpay firstpay firstmonthlymonthly
Payany amount$50$10$129$99
Enough foras many as you pay forabout 2,080 callsabout 346 calls4,000 calls a month2,000 calls a month
Freshnessunknownstoredunknownunknownunknown
Who can get itanyoneanyone not in Russia, Belarus, Cuba, Iran, Syria, Myanmar, North Korea or Russian-occupied Ukraineanyone 18 or over, for business or professional use, not in an embargoed jurisdiction or on a restricted-party listanyone with an Ahrefs account, only workspace owners and admins create API keysanyone with a business name and a working business email address

Every domain authority API provider we score, ranked

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-01.

  1. api.unifapi.com/openapi.json
  2. docs.unifapi.com/api/seo/backlinks/summary/post
  3. docs.unifapi.com/rate-limits
  4. unifapi.com/apis/linkedin
  5. unifapi.com/apis/seo/backlinks/summary/post
  6. unifapi.com/legal/acceptable-use-policy
  7. unifapi.com/legal/terms-of-service
  8. unifapi.com/pricing
  9. unifapi.com/pricing.md

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Authority score, not in the answer
  • Spam score
  • Backlinks
  • Referring domains
  • Referring pages
Price
$ per 1,000 domains$50.00
Percall
Billingpay first
Charges
Also pays forfrom the same budget: 324 other calls
In their words
Their pitchReturn an overview of a target's backlink profile: total backlinks, referring domains/pages/IPs, rank, spam score, and broken-link counters, for a quick link-profile health check.
Data
Keep datano limit
Use dataYou agree not to use our services for any unlawful purpose or in any way that could damage, disable, or impair the service. Prohibited activities include but are not limited to: Violating any applicable laws or regulations, Infringing on intellectual property rights, Transmitting malicious code or harmful content, Attempting to gain unauthorized access to systems, Interfering with or disrupting the service. [...] You may not use our services to: [...] Send unsolicited bulk messages (spam) [...] Circumvent any access controls or usage limits [...]. Public data has different legal postures depending on jurisdiction and platform. We provide the technical access, you're responsible for downstream use.
Plan
Expiresnever
Rate limit
Per second1
Batch1
Speed
Answerin the call
The call
You sendtarget. Optional: backlinks_status_type, include_subdomains, include_indirect_links, exclude_internal_backlinks, internal_list_limit, rank_scale, view
MethodPOST
Path/seo/backlinks/summary
About the plan
PlanPay-as-you-go
Who can get itanyone
The 26 fields the plan's answer can hold

target, view, crawled pages, internal links count, external links count, rank, backlinks, backlinks spam score, first seen, lost date, broken backlinks, broken pages, referring domains, referring main domains, referring pages, referring IPs, referring subnets, nofollow referring domains, nofollow referring main domains, nofollow referring pages, referring links by TLD, referring links by type, referring links by attribute, referring links by platform type, referring links by semantic location, referring links by country

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