# Seonio, free $1, POST /api/v1/url/stats: Domain authority API

> Page- and domain-level authority metrics for a specific URL.

Seonio's domain authority API on its Free $1 plan. It costs $0.00 per 1,000 domains. Seonio's docs list 4 of the 5 key fields we check: Authority score, Spam score, Referring domains, Referring pages.
We haven't run Seonio through [our domain authority API benchmark](https://datacircle.dev/best-domain-authority-api.txt) yet.
This plan is free. We rank 192 plans for domain authority APIs by price. Half the plans cost $2.991 per 1,000 domains or less.
[Morningscore's $69 monthly plan](https://datacircle.dev/domain-authority-apis/morningscore/69-monthly/llms.txt) is the cheapest paid plan per 1,000 domains. Morningscore's $69 monthly plan charges nothing per call. You get as many domains as Morningscore's rate limit allows.
[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 less up front than Morningscore's $69 monthly plan.
[AnyAPI](https://datacircle.dev/domain-authority-apis/anyapi/top-up-from-10-manual-top-up-post-v1-run-semrush-overview/llms.txt), [SE Ranking](https://datacircle.dev/domain-authority-apis/se-ranking/29-monthly-add-on-monthly-billing-get-v1-backlinks-authority-domain/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/seonio/free-1-post-api-v1-url-stats
- [Domain authority API: the 4 best providers compared](https://datacircle.dev/best-domain-authority-api.txt)
- Get it: https://seonio.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- Request: `POST https://seonio.com/api/v1/url/stats`
- API key: with the plan, on https://seonio.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- Its API docs: https://seonio.com/product/api/url/stats?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- Sold by: Seonio (https://seonio.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing)
- Checked: 2026-11-06

## In the answer

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

## Price

- $ per 1,000 domains: $0.00
- Per: call
- Billing: free

## Charges

- Also pays for: from the same budget: Keyword Research · Keyword Difficulty · Keyword Intent · Keyword Demographics · Keyword Clustering · Keyword Suggestions · Keyword Metrics by Country · SERP · SERP Scraper · Scraper · Website Traffic · Website Ranking · Website Category · Website Competitors · Similar Websites · URL Keywords · Website Stats · Backlink History · Backlink Table · AI Visibility Report · AI Visibility Result · Site Audit · Site Audit Result · Seonio SEO Agent · SEO Page Checker

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Page- and domain-level authority metrics for a specific URL.

## Data

- Keep data: no limit
- Use data: [...] you may use reports, API responses, and outputs generated through your account for: your internal business purposes, your own websites, products, applications, and projects, client work performed by you or your organization, integrations that use Seonio data as part of a broader product or workflow, provided that you comply with these Terms and applicable law [...] You must not: resell standalone access to Seonio, resell or sublicense API access, API keys, or your account, resell raw datasets, raw API responses, or raw outputs as a separate data product, use the Service or outputs to build a substantially similar competing service without our written permission, misrepresent Seonio outputs as official, guaranteed, real-time, or independently verified data, remove or obscure any usage restrictions, source notices, or attribution requirements that may be shown in the Service

## Plan

- Pay: $0
- You get: $1
- Enough for: 500 calls, once
- Expires: 30 days after the account is verified

## Rate limit

- Per second: 5
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: target
- Method: POST
- Path: /api/v1/url/stats

## About the plan

- Plan: Free $1
- Who can get it: anyone with a verified account

## The 7 fields the plan's answer can hold

target, page authority, domain authority, spam score, referring domains, referring pages, referring pages nofollow

## Seonio's plans (10)

- [Seonio, free $1, POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/free-1-post-api-v1-url-stats/llms.txt): $0.00 per 1,000, 80% complete
- [Seonio, $10 pack, Extra Usage $10, POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/10-pack-extra-usage-10-post-api-v1-url-stats/llms.txt): 80% complete
- [Seonio, $100 pack, Extra Usage $100, POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/100-pack-extra-usage-100-post-api-v1-url-stats/llms.txt): $1.739 per 1,000, 80% complete
- [Seonio, $1,000 pack, Extra Usage $1,000, POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/1000-pack-extra-usage-1000-post-api-v1-url-stats/llms.txt): 80% complete
- [Seonio, $15 monthly, Starter, POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/15-monthly-starter-post-api-v1-url-stats/llms.txt): $2.00 per 1,000, 80% complete
- [Seonio, $30 monthly, Pro, POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/30-monthly-pro-post-api-v1-url-stats/llms.txt): $1.60 per 1,000, 80% complete
- [Seonio, $60 monthly, Business, POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/60-monthly-business-post-api-v1-url-stats/llms.txt): $1.333 per 1,000, 80% complete
- [Seonio, $120 yearly, Starter (yearly), POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/120-yearly-starter-yearly-post-api-v1-url-stats/llms.txt): $1.333 per 1,000, 80% complete
- [Seonio, $240 yearly, Pro (yearly), POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/240-yearly-pro-yearly-post-api-v1-url-stats/llms.txt): $1.067 per 1,000, 80% complete
- [Seonio, $480 yearly, Business (yearly), POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/480-yearly-business-yearly-post-api-v1-url-stats/llms.txt): $0.889 per 1,000, 80% complete

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

- `POST /api/v1/url/stats`: [Seonio, free $1, POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/free-1-post-api-v1-url-stats/llms.txt)
- `POST /api/v1/website/stats`: [Seonio, free $1, POST /api/v1/website/stats](https://datacircle.dev/domain-authority-apis/seonio/free-1-post-api-v1-website-stats/llms.txt)

## Seonio's APIs (8)

- [Seonio: related keywords API pricing, 10 plans](https://datacircle.dev/related-keywords-apis/seonio/free/llms.txt)
- [Seonio: backlink API pricing, 10 plans](https://datacircle.dev/backlink-apis/seonio/free/llms.txt)
- [Seonio: web scraping API pricing, 10 plans](https://datacircle.dev/web-scraping-apis/seonio/free/llms.txt)
- [Seonio: keyword research API pricing, 10 plans, POST /api/v1/keywords/country](https://datacircle.dev/keyword-research-apis/seonio/free-1-post-api-v1-keywords-country/llms.txt)
- [Seonio: keyword research API pricing, 10 plans, POST /api/v1/keywords/global](https://datacircle.dev/keyword-research-apis/seonio/free-1-post-api-v1-keywords-global/llms.txt)
- [Seonio: SERP API pricing, 10 plans, POST /api/v1/serp/country](https://datacircle.dev/serp-apis/seonio/free-1-post-api-v1-serp-country/llms.txt)
- [Seonio: SERP API pricing, 10 plans, POST /api/v1/serp/scraper](https://datacircle.dev/serp-apis/seonio/free-1-post-api-v1-serp-scraper/llms.txt)
- [Seonio: similar companies API pricing, 10 plans, POST /api/v1/website/similar](https://datacircle.dev/similar-company-apis/seonio/free-1-post-api-v1-website-similar/llms.txt)
- [Seonio: similar companies API pricing, 10 plans, POST /api/v1/website/competitors](https://datacircle.dev/similar-company-apis/seonio/free-1-post-api-v1-website-competitors/llms.txt)
- [Seonio: ranked keywords API pricing, 10 plans, POST /api/v1/url/keywords](https://datacircle.dev/ranked-keywords-apis/seonio/free-1-post-api-v1-url-keywords/llms.txt)
- [Seonio: ranked keywords API pricing, 10 plans, POST /api/v1/website/ranking](https://datacircle.dev/ranked-keywords-apis/seonio/free-1-post-api-v1-website-ranking/llms.txt)
- [Seonio: domain authority API pricing, 10 plans, POST /api/v1/url/stats](https://datacircle.dev/domain-authority-apis/seonio/free-1-post-api-v1-url-stats/llms.txt)

## Seonio: domain authority API alternatives

- [CheckTrust, ₽6,990 monthly](https://datacircle.dev/domain-authority-apis/checktrust/6990-monthly/llms.txt): $0.836 per 1,000, 0% complete
- [SEO PowerSuite, $149 monthly, 5,000,000 units, GET /backlinks/v1.0/get-inlink-rank](https://datacircle.dev/domain-authority-apis/seo-powersuite/149-monthly-5000000-units-get-backlinks-v1-0-get-inlink-rank/llms.txt): $0.894 per 1,000, 0% complete
- [UnblockingAPI, €500 pack](https://datacircle.dev/domain-authority-apis/unblockingapi/500-pack/llms.txt): $0.938 per 1,000, 60% complete, live
- [SE Ranking, $29 monthly, Add-on, monthly billing, GET /v1/backlinks/authority/domain](https://datacircle.dev/domain-authority-apis/se-ranking/29-monthly-add-on-monthly-billing-get-v1-backlinks-authority-domain/llms.txt): $0.967 per 1,000, 20% complete, 1 month

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-06.

- https://seonio.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- https://seonio.com/product/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- https://seonio.com/product/api/url/stats?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- https://seonio.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing