Backlinq API for SEO Backlink Intelligence API ID: 11946

Affordable domain authority scores, backlink profiles, referring domains, and multi-domain comparisons. Powered by Moz, Open PageRank, and Common Crawl without the $1,200/year price tag.
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Introducing Backlinq, the ultimate API that empowers developers, AI agents, and digital agencies with effortless access to invaluable SEO backlink intelligence, all without the burden of costly annual subscriptions.

Unlike traditional SEO platforms that often impose steep fees of $1,200 per year, regardless of usage, Backlinq offers a flexible pricing model that starts at no cost. Scale your expenses according to your actual usage, say goodbye to rigid annual contracts and avoid tedious enterprise sales calls.

Key Features and Benefits

  • Domain Authority: Access crucial metrics including Domain Authority scores (ranging from 0 to 100), PageRank (0–10), Global Rank, and Spam Score for any domain. This is the most requested data point in the SEO community.
  • Comprehensive Backlink Profile: Obtain detailed information about total backlinks, unique referring domains, and the top linking URLs, complete with rich metadata.
  • Referring Domains Overview: Enjoy a deduplicated list of external domains linking to your target, providing deeper insights than mere backlink counts.
  • Domain Comparison: Effortlessly compare 2 to 5 domains side by side based on Domain Authority to facilitate competitor analysis and compelling client presentations.

Data Sources for Enhanced Accuracy

  • Domain Authority and Spam Score from Moz
  • PageRank and Global Rank sourced from Open PageRank
  • Backlinks and Referring Domains managed by Common Crawl

Who Can Benefit from Backlinq?

  • Developers creating innovative SEO tools, dashboards, or intelligent AI agents
  • SEO freelancers conducting sporadic client audits with efficiency
  • Agencies seeking to automate competitor research and generate insightful reports
  • AI agents requiring instant access to domain intelligence on demand

Unlock the power of SEO backlink intelligence with Backlinq today and transform the way you approach search engine optimization!

API Documentation

Endpoints


Returns Domain Authority score (0–100), PageRank (0–10), Global Rank, and Spam Score for any domain. Powered by Moz and Open PageRank data sources.



                                                                            
GET https://docs.zylalabs.com/api/11946/backlinq+api+for+seo+backlink+intelligence/22718/get+domain+authority
                                                                            
                                                                        

Get Domain Authority - Endpoint Features

Object Description
domain [Required] The domain to analyze. Example: github.com

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

domain

API EXAMPLE RESPONSE

{"domain":"allwellsofficial.com","pageRank":0,"rank":"217176858","domainAuthority":1,"spamScore":1}

Get Domain Authority - CODE SNIPPETS


curl --location --request GET 'https://zylalabs.com/api/11946/backlinq+api+for+seo+backlink+intelligence/22718/get+domain+authority?domain=allwellsofficial.com' --header 'Authorization: Bearer YOUR_API_KEY' 


    

Returns total backlinks pointing to a domain, unique referring domain count, and a list of top linking URLs with metadata. Powered by Common Crawl data.



                                                                            
GET https://docs.zylalabs.com/api/11946/backlinq+api+for+seo+backlink+intelligence/22719/get+backlink+profile
                                                                            
                                                                        

Get Backlink Profile - Endpoint Features

Object Description
domain [Required] The domain to analyze. Example: vercel.com

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

domain
limit

API EXAMPLE RESPONSE

{"domain":"studiofreight.com","pageRank":3.04,"rank":"3162241","domainAuthority":"not fetched — use get_domain_authority tool","totalBacklinks":10,"referringDomainsCount":4,"topBacklinks":[{"url":"https://aniso.studiofreight.com/","timestamp":"20260209154809","status":"200","source":"commoncrawl"},{"url":"http://aniso.studiofreight.com/","timestamp":"20260209154809","status":"308","source":"commoncrawl"},{"url":"https://aniso.studiofreight.com/robots.txt","timestamp":"20260209154650","status":"404","source":"commoncrawl"},{"url":"http://aniso.studiofreight.com/robots.txt","timestamp":"20260209154809","status":"308","source":"commoncrawl"},{"url":"https://applause.studiofreight.com/","timestamp":"20260209041940","status":"200","source":"commoncrawl"},{"url":"https://applause.studiofreight.com/portfolio/","timestamp":"20260209062506","status":"200","source":"commoncrawl"},{"url":"https://applause.studiofreight.com/robots.txt","timestamp":"20260209041940","status":"200","source":"commoncrawl"},{"url":"https://argus.studiofreight.com/","timestamp":"20260206184709","status":"200","source":"commoncrawl"},{"url":"https://argus.studiofreight.com/robots.txt","timestamp":"20260206184709","status":"200","source":"commoncrawl"},{"url":"https://bad-boys.studiofreight.com/faq","timestamp":"20260212130425","status":"200","source":"commoncrawl"}]}

Get Backlink Profile - CODE SNIPPETS


curl --location --request GET 'https://zylalabs.com/api/11946/backlinq+api+for+seo+backlink+intelligence/22719/get+backlink+profile?domain=studiofreight.com' --header 'Authorization: Bearer YOUR_API_KEY' 


    

Returns a deduplicated list of external domains linking to the target domain. More meaningful than raw backlink count.



                                                                            
GET https://docs.zylalabs.com/api/11946/backlinq+api+for+seo+backlink+intelligence/22720/get+referring+domains
                                                                            
                                                                        

Get Referring Domains - Endpoint Features

Object Description
domain [Required] The domain to analyze. Example: github.com

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

domain
limit

API EXAMPLE RESPONSE

{"domain":"studiofreight.com","totalFound":12,"referringDomains":[{"domain":"aniso.studiofreight.com","exampleUrl":"https://aniso.studiofreight.com/","lastSeen":"20260209154809","source":"commoncrawl"},{"domain":"applause.studiofreight.com","exampleUrl":"https://applause.studiofreight.com/","lastSeen":"20260209041940","source":"commoncrawl"},{"domain":"argus.studiofreight.com","exampleUrl":"https://argus.studiofreight.com/","lastSeen":"20260206184709","source":"commoncrawl"},{"domain":"bad-boys.studiofreight.com","exampleUrl":"https://bad-boys.studiofreight.com/faq","lastSeen":"20260212130425","source":"commoncrawl"},{"domain":"darkroom.studiofreight.com","exampleUrl":"http://darkroom.studiofreight.com/","lastSeen":"20260211011341","source":"commoncrawl"},{"domain":"dither.studiofreight.com","exampleUrl":"https://dither.studiofreight.com/","lastSeen":"20260217142431","source":"commoncrawl"},{"domain":"evmos.studiofreight.com","exampleUrl":"https://evmos.studiofreight.com/","lastSeen":"20260211034612","source":"commoncrawl"},{"domain":"lenis.studiofreight.com","exampleUrl":"https://lenis.studiofreight.com/","lastSeen":"20260208130959","source":"commoncrawl"},{"domain":"lunchbox.studiofreight.com","exampleUrl":"http://lunchbox.studiofreight.com/","lastSeen":"20260214080602","source":"commoncrawl"},{"domain":"repeat.studiofreight.com","exampleUrl":"https://repeat.studiofreight.com/","lastSeen":"20260208011524","source":"commoncrawl"},{"domain":"valkyrae.studiofreight.com","exampleUrl":"https://valkyrae.studiofreight.com/","lastSeen":"20260212185233","source":"commoncrawl"},{"domain":"wyre.studiofreight.com","exampleUrl":"https://wyre.studiofreight.com/","lastSeen":"20260212152604","source":"commoncrawl"}]}

Get Referring Domains - CODE SNIPPETS


curl --location --request GET 'https://zylalabs.com/api/11946/backlinq+api+for+seo+backlink+intelligence/22720/get+referring+domains?domain=studiofreight.com' --header 'Authorization: Bearer YOUR_API_KEY' 


    

Returns a side-by-side authority comparison for 2–5 domains ranked by Domain Authority. Includes DA score, PageRank, Global Rank, and Spam Score for each domain. Built for competitor analysis, acquisition research, and client pitches.



                                                                            
GET https://docs.zylalabs.com/api/11946/backlinq+api+for+seo+backlink+intelligence/22721/compare+domains
                                                                            
                                                                        

Compare Domains - Endpoint Features

Object Description
domains [Required] Comma-separated list of 2–5 domains to compare. Example: github.com,vercel.com,netlify.com

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

domains

API EXAMPLE RESPONSE

{"domains":["allwellsofficial.com","braudit.app","tekipeps.com"],"leaderboard":[{"rank":1,"domain":"braudit.app","pageRank":1.57,"domainAuthority":6,"spamScore":9},{"rank":2,"domain":"tekipeps.com","pageRank":0,"domainAuthority":4,"spamScore":3},{"rank":3,"domain":"allwellsofficial.com","pageRank":0,"domainAuthority":1,"spamScore":1}]}

Compare Domains - CODE SNIPPETS


curl --location --request GET 'https://zylalabs.com/api/11946/backlinq+api+for+seo+backlink+intelligence/22721/compare+domains?domains=allwellsofficial.com,braudit.app,tekipeps.com' --header 'Authorization: Bearer YOUR_API_KEY' 


    

API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Backlinq API for SEO Backlink Intelligence simply include your bearer token in the Authorization header.
Headers
Header Description
Authorization [Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

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Backlinq API for SEO Backlink Intelligence FAQs

Each endpoint returns specific SEO-related data: the "Get Domain Authority" endpoint provides metrics like Domain Authority and Spam Score; "Get Backlink Profile" offers total backlinks and unique referring domains; "Get Referring Domains" lists external domains linking to the target; and "Compare Domains" delivers a side-by-side comparison of multiple domains' authority metrics.

Key fields include "domain," "domainAuthority," "spamScore," "totalBacklinks," and "referringDomainsCount" for the respective endpoints. For example, "Get Backlink Profile" includes "topBacklinks" with URLs and metadata, while "Compare Domains" features "leaderboard" with ranks and scores for each domain.

Response data is structured in JSON format, with each endpoint returning a specific object. For instance, "Get Backlink Profile" returns an object containing total backlinks and an array of "topBacklinks," while "Compare Domains" returns a leaderboard array detailing the rank and metrics of each domain.

Each endpoint provides distinct information: "Get Domain Authority" offers authority scores; "Get Backlink Profile" details backlinks and referring domains; "Get Referring Domains" lists unique domains linking to the target; and "Compare Domains" presents comparative metrics for multiple domains.

Data is sourced from reputable platforms: Domain Authority and Spam Score are from Moz, PageRank and Global Rank come from Open PageRank, and backlinks and referring domains are managed by Common Crawl, ensuring a comprehensive and reliable data set.

Users can customize requests by specifying the target domain in the endpoint parameters. For example, when using "Get Domain Authority," simply input the desired domain to retrieve its specific metrics. Each endpoint accepts a single domain or multiple domains for comparison.

Typical use cases include SEO audits, competitor analysis, and client reporting. Developers can integrate the API into tools for real-time backlink analysis, while agencies can automate research and generate insights for client presentations using the comparative data.

Users can leverage the returned data for strategic decision-making. For instance, the "Get Backlink Profile" can identify strong linking domains for outreach, while "Compare Domains" helps visualize competitive positioning, aiding in SEO strategy formulation and client pitches.

General FAQs

To obtain your API key, you first need to sign in to your account and subscribe to the API you want to use. Once subscribed, go to your Profile, open the Subscription section, and select the specific API. Your API key will be available there and can be used to authenticate your requests.

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If you don’t cancel before the 7th day, your free trial will end automatically and your subscription will switch to a paid plan under the same plan you originally subscribed to, meaning you will be charged and gain access to the API calls included in that plan.

The free trial ends when you reach 50 API requests or after 7 days, whichever comes first. 

No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.

 Yes, we offer a 7-day free trial that allows you to make up to 50 API calls at no cost, so you can test our APIs without any commitment. 

Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.

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