# Domain authority checker: run it free, or from your agent DataForSEO domain rank of any domain, with referring domains, backlinks and spam score. ## Prompt Use looot to check the domain authority of [domain] against two competitors. 1. Set up https://looot.ai/skill.md. 2. Find a backlink summary endpoint in the catalog and check its price before you call. 3. Run it for each domain. 4. Return a table of domain rank, referring domains, backlinks and spam score per domain, say the rank is DataForSEO's 0 to 1000 score and not Moz DA, and give the total cost. ## What it needs A domain, such as hubspot.com ## What comes back - domain rank (0 to 1000) - referring domains - backlinks - referring IPs and subnets - nofollow referring domains - backlinks spam score - first seen ## Endpoints and providers - dataforseo: dataforseo-backlinks-summary-live-ai - dataforseo: dataforseo-backlinks-referring-domains-live-ai ## What it costs The tool on the web page runs live at no cost to you and is limited per hour. The results come from public data through looot. For heavier or repeated use, run the same job from your own looot account: looot bills per call and charges nothing while your agent is idle. The live price comes from the catalog and shows on the web page. ## Vet a link Check the rank and spam score of a site before you pitch it, pay for a post or accept a link swap. ## Benchmark rivals Put your domain next to the sites that outrank you and see how far apart the referring domain counts are. ## Check a site to buy Read the link profile of a domain or expired site before you make an offer. ## Agent link lists Let your agent score a list of prospects for outreach and drop the ones with a high spam score. ## What is domain authority? A score that estimates how strong a domain's backlink profile is, so how likely its pages are to rank. Each SEO index computes its own. Moz calls its score Domain Authority, others call it domain rank or domain rating, and the numbers do not convert into each other. ## Which score does this checker show? DataForSEO domain rank, from the DataForSEO backlink index. It scores every domain in DataForSEO's link graph from 0 to 1000, with a method similar to PageRank: links from domains that themselves have many strong links count more. ## Is this the same as Moz DA? No. Moz Domain Authority is Moz's own 1 to 100 score from Moz's own index. This page shows DataForSEO's rank on a 0 to 1000 scale. Compare domains with the same score only. ## What is a good domain rank? There is no fixed bar. Compare your domain with the sites that rank for the keywords you want. Referring domains often say more than the score: a few hundred real sites linking to you is a solid base. ## What are referring domains? The number of different websites that link to the domain. Ten links from one site count as one referring domain, which is why it is a better signal than the raw backlink count. ## What is the backlinks spam score? DataForSEO's estimate, from 0 to 100, of how much of the domain's link profile looks spammy. A high score is a reason to look at the links before you trust the rank. ## How do I increase domain authority? Earn links from relevant sites that already rank: useful tools, original data and pages other writers cite. The score follows the links, so there is no shortcut on the score itself. ## Is this domain authority checker free? Yes. Each run on this page costs you nothing and is limited per hour. For many domains, your agent runs the same endpoint on your own looot account at the per-call price shown above. ## How do I run this from an agent? Copy the prompt above into your agent with the looot skill.md link. It picks the backlink summary endpoint, checks the price and returns one row per domain. ## Related tools - /free-tools/backlink-checker - /free-tools/website-traffic-checker - /free-tools/keyword-rank-checker - /free-tools/website-technology-checker ## Last reviewed 2026-10-28. The price per call is read live from the catalog on the web page. ## Agent skill for this page https://looot.ai/free-tools/domain-authority-checker/skill.md sets an agent up for exactly the jobs on this page, with the live price of each, and offers the page's starter task once the user has picked a job and seen the price. The line to give an agent is under "Give this to your agent" below. ## For agents ### Give this to your agent ```text set up looot for Domain authority checker - https://looot.ai/free-tools/domain-authority-checker/skill.md ```