# SEObserver, contact us: Domain authority API

> Get link metrics (TrustFlow, CitationFlow, backlinks count, referring domains, etc.) for up to 100 items in a single request. Powered by Majestic GetIndexItemInfo.

SEObserver's domain authority API on its API subscription plan. SEObserver's docs list 3 of the 5 fields on our checklist: Authority score, Backlinks, Referring domains.
We haven't run SEObserver through [our domain authority API benchmark](https://datacircle.dev/best-domain-authority-api.txt) yet.
SEObserver gives this plan's price on request. We rank 203 plans for domain authority APIs by price. Half the plans cost $2.991 per 1,000 domains or less.
[Pixel Tools's ₽99 (about $1) pack](https://datacircle.dev/domain-authority-apis/pixel-tools/99-pack/llms.txt) is the cheapest paid plan per 1,000 domains: $0.017.
[BacklinkMCP's $19 monthly plan](https://datacircle.dev/domain-authority-apis/backlinkmcp/19-monthly/llms.txt) covers any number of domains. BacklinkMCP's $19 monthly plan costs more up front than Pixel Tools's ₽99 (about $1) pack.
[SE Ranking](https://datacircle.dev/domain-authority-apis/se-ranking/29-monthly-add-on-monthly-billing-get-v1-backlinks-authority-domain/llms.txt), [AnyAPI](https://datacircle.dev/domain-authority-apis/anyapi/top-up-from-10-manual-top-up-post-v1-run-semrush-overview/llms.txt) and [DataForSEO](https://datacircle.dev/domain-authority-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-backlinks-bulk-ranks-live/llms.txt) are the best domain authority API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-authority-apis/seobserver/contact-us
- [Domain authority API: the 4 best providers compared](https://datacircle.dev/best-domain-authority-api.txt)
- Get it: https://api1-docs.seobserver.com/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- Request: `GET https://api1.seobserver.com/backlinks/metrics.json`
- API key: with the plan, on https://api1-docs.seobserver.com/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- Its API docs: https://api1-docs.seobserver.com/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- Sold by: SEObserver (https://www.seobserver.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 60%
- Authority score: ✓
- Backlinks: ✓
- Referring domains: ✓

## Price

- Per: result
- Billing: contact

## Charges

- Also pays for: from the same budget: backlinks/metrics_archive · backlinks/anchors · backlinks/top · backlinks/refdomains · backlinks/pages · serps/add · indexeds/add · organic_keywords/metrics · organic_keywords/index · organic_keywords/urls · organic_keywords/visibility_history · screenshots

## In their words

- Their pitch: Get link metrics (TrustFlow, CitationFlow, backlinks count, referring domains, etc.) for up to 100 items in a single request. Powered by Majestic GetIndexItemInfo.

## Data

- Keep data: no limit
- Use data: Non-automated use: the user is obliged to use the service responsibly, reasonably, carefully and at a human pace. The user is strictly prohibited from using any automated system, by means of a browser or scripts or any other means, except with written agreement provided for in a specific contract. [...] The Service is reserved for professionals (companies, businesses, profit-making legal entities) only, and not for individuals. [...] The Client is prohibited from reselling their access to the Service, or from granting access to all or part of the data retrieved through the Service, for example in the case of a tool intended for the public.

## Rate limit

- Batch: 100

## Speed

- Answer: in the call

## The call

- You send: items[].item_type, items[].item_value. Optional: datasource
- Method: GET
- Path: /backlinks/metrics.json

## About the plan

- Plan: API subscription
- Who can get it: professionals only: companies, businesses and profit-making legal entities, not individuals

## The 72 fields the plan's answer can hold

item number, item, result code, found status, backlinks, referring domains, AC rank, item type, indexed URLs, referring IPs, referring subnets, referring edu domains, edu backlinks, referring gov domains, gov backlinks, referring edu domains to exact item, edu backlinks to exact item, referring gov domains to exact item, gov backlinks to exact item, crawled, last crawl date, last crawl result, redirects, final redirect result, outbound external domains, outbound external links, outbound internal links, outbound link pages, last seen, affected by anti-spam algorithm, title, redirect target, language codes, language names, language confidence, language page ratios, language total pages, referring language codes, referring language names, referring language confidence, referring language page ratios, referring language total pages, crawled URLs, root domain IP address, total non-unique links, non-unique homepage links, non-unique indirect links, non-unique deleted links, non-unique nofollow links, non-unique HTTPS links, non-unique frame links, non-unique image links, non-unique redirect links, non-unique text links, live referring domains, follow referring domains, referring domains linking to the homepage, direct referring domains, HTTPS referring domains, canonical URL, Citation Flow, Trust Flow, Trust Metric, trust categories, topical Trust Flow topic, topical Trust Flow value, duplicate links, cannot be classified, duplicate links, non-notable, duplicate links, notable, duplicate links, redirect, duplicate links, distinct, duplicate links, pending classification

## SEObserver's plans (1)

- [SEObserver, contact us](https://datacircle.dev/domain-authority-apis/seobserver/contact-us/llms.txt): 60% complete

## SEObserver's calls for this API (1)

- `GET /backlinks/metrics.json`: [SEObserver, contact us](https://datacircle.dev/domain-authority-apis/seobserver/contact-us/llms.txt)

## SEObserver's APIs (4)

- [SEObserver: domain authority API pricing, 1 plan](https://datacircle.dev/domain-authority-apis/seobserver/contact-us/llms.txt)
- [SEObserver: ranked keywords API pricing, 1 plan](https://datacircle.dev/ranked-keywords-apis/seobserver/contact-us/llms.txt)
- [SEObserver: SERP API pricing, 3 plans](https://datacircle.dev/serp-apis/seobserver/contact-us-agency/llms.txt)
- [SEObserver: backlink API pricing, 1 plan, GET /backlinks/anchors.json](https://datacircle.dev/backlink-apis/seobserver/contact-us-api-subscription-get-backlinks-anchors-json/llms.txt)
- [SEObserver: backlink API pricing, 1 plan, GET /backlinks/pages.json](https://datacircle.dev/backlink-apis/seobserver/contact-us-api-subscription-get-backlinks-pages-json/llms.txt)
- [SEObserver: backlink API pricing, 1 plan, GET /backlinks/refdomains.json](https://datacircle.dev/backlink-apis/seobserver/contact-us-api-subscription-get-backlinks-refdomains-json/llms.txt)
- [SEObserver: backlink API pricing, 1 plan, GET /backlinks/top.json](https://datacircle.dev/backlink-apis/seobserver/contact-us-api-subscription-get-backlinks-top-json/llms.txt)

## SEObserver: domain authority API alternatives

- [SE Ranking, contact us, Enterprise, GET /v1/backlinks/summary](https://datacircle.dev/domain-authority-apis/se-ranking/contact-us-enterprise-get-v1-backlinks-summary/llms.txt): 60% complete, 1 month
- [UnblockingAPI, contact us](https://datacircle.dev/domain-authority-apis/unblockingapi/contact-us/llms.txt): 60% complete, live
- [WooRank, contact us](https://datacircle.dev/domain-authority-apis/woorank/contact-us/llms.txt): 60% complete, stored
- [1Lookup, contact us, Custom enterprise, POST /backlink-overview](https://datacircle.dev/domain-authority-apis/1lookup/contact-us-custom-enterprise-post-backlink-overview/llms.txt): 60% complete
- [SEOkicks, contact us](https://datacircle.dev/domain-authority-apis/seokicks/contact-us/llms.txt): 40% 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 2026-11-07.

- https://api1-docs.seobserver.com/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- https://www.seobserver.com/terms.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing