# UnifAPI, top-up, Pay-as-you-go, POST /seo/backlinks/summary: Domain authority API

> Return 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.

UnifAPI's domain authority API on its Pay-as-you-go plan. It costs $50.00 per 1,000 domains. It returns 4 of the 5 key fields we check: Spam score, Backlinks, Referring domains, Referring pages.
Half 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](https://datacircle.dev/domain-authority-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-backlinks-bulk-ranks-live/llms.txt) costs the least per 1,000 domains: $0.036.
[AnyAPI](https://datacircle.dev/domain-authority-apis/anyapi/top-up-from-10-manual-top-up-post-v1-run-semrush-overview/llms.txt), [DataForSEO](https://datacircle.dev/domain-authority-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-backlinks-bulk-ranks-live/llms.txt) and [SE Ranking](https://datacircle.dev/domain-authority-apis/se-ranking/29-monthly-add-on-monthly-billing-get-v1-backlinks-authority-domain/llms.txt) are the best domain authority API providers in our benchmark.

- This page: https://datacircle.dev/domain-authority-apis/unifapi/top-up-pay-as-you-go-post-seo-backlinks-summary
- [Best domain authority API in 2026: pricing compared](https://datacircle.dev/best-domain-authority-api.txt)
- Get it: https://unifapi.com/pricing
- Request: `POST https://api.unifapi.com/seo/backlinks/summary`
- API key: with the plan, on https://unifapi.com/pricing
- Its API docs: https://docs.unifapi.com/api/seo/backlinks/summary/post
- Sold by: UnifAPI (https://unifapi.com)
- Checked: 2026-11-01

## In the answer

- Completeness: 80%
- Spam score: ✓
- Backlinks: ✓
- Referring domains: ✓
- Referring pages: ✓

## Price

- $ per 1,000 domains: $50.00
- Per: call
- Billing: pay first

## Charges

- Also pays for: from the same budget: 324 other calls

## In their words

- Their pitch: Return 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 data: no limit
- Use data: You 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

- Expires: never

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: target. Optional: backlinks_status_type, include_subdomains, include_indirect_links, exclude_internal_backlinks, internal_list_limit, rank_scale, view
- Method: POST
- Path: /seo/backlinks/summary

## About the plan

- Plan: Pay-as-you-go
- Who can get it: anyone

## 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

## UnifAPI's plans (3)

- [UnifAPI, top-up, Pay-as-you-go, POST /seo/backlinks/summary](https://datacircle.dev/domain-authority-apis/unifapi/top-up-pay-as-you-go-post-seo-backlinks-summary/llms.txt): $50.00 per 1,000, 80% complete
- [UnifAPI, top-up, Starter top-up, POST /seo/backlinks/summary](https://datacircle.dev/domain-authority-apis/unifapi/top-up-starter-top-up-post-seo-backlinks-summary/llms.txt): $50.00 per 1,000, 80% complete
- [UnifAPI, contact us, Enterprise, POST /seo/backlinks/summary](https://datacircle.dev/domain-authority-apis/unifapi/contact-us-enterprise-post-seo-backlinks-summary/llms.txt): 80% complete

## UnifAPI's calls for this API (2)

- `POST /seo/backlinks/bulk-ranks`: [UnifAPI, top-up, Pay-as-you-go, POST /seo/backlinks/bulk-ranks](https://datacircle.dev/domain-authority-apis/unifapi/top-up-pay-as-you-go-post-seo-backlinks-bulk-ranks/llms.txt)
- `POST /seo/backlinks/summary`: [UnifAPI, top-up, Pay-as-you-go, POST /seo/backlinks/summary](https://datacircle.dev/domain-authority-apis/unifapi/top-up-pay-as-you-go-post-seo-backlinks-summary/llms.txt)

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## UnifAPI: domain authority API alternatives

- [DataForSEO, top-up from $50, Pay as you go, POST /v3/backlinks/summary/live](https://datacircle.dev/domain-authority-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-backlinks-summary-live/llms.txt): $24.036 per 1,000, 100% complete, stored
- [AnyAPI, top-up from $10, Manual top-up, POST /v1/run/seo.backlinks_summary](https://datacircle.dev/domain-authority-apis/anyapi/top-up-from-10-manual-top-up-post-v1-run-seo-backlinks-summary/llms.txt): $28.85 per 1,000, 100% complete
- [Ahrefs, $129 monthly, Lite, GET /v3/site-explorer/domain-rating](https://datacircle.dev/domain-authority-apis/ahrefs/129-monthly-lite-get-v3-site-explorer-domain-rating/llms.txt): $32.25 per 1,000, 20% complete
- [1Lookup, $99 monthly, Starter, POST /domain-authority](https://datacircle.dev/domain-authority-apis/1lookup/99-monthly-starter-post-domain-authority/llms.txt): $49.50 per 1,000, 20% complete

## 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.

- https://api.unifapi.com/openapi.json
- https://docs.unifapi.com/api/seo/backlinks/summary/post
- https://docs.unifapi.com/rate-limits
- https://unifapi.com/apis/linkedin
- https://unifapi.com/apis/seo/backlinks/summary/post
- https://unifapi.com/legal/acceptable-use-policy
- https://unifapi.com/legal/terms-of-service
- https://unifapi.com/pricing
- https://unifapi.com/pricing.md