# FreeQ, pay as you go: Domain authority API

> Backlink overview for any domain — referring domains, backlink count, authority.

FreeQ's x402 pay per call plan for the domain authority API costs $50.00 per 1,000 domains. We check each provider's docs for 5 fields. FreeQ's docs list 2: Backlinks, Referring domains.
We haven't run FreeQ through [our domain authority API benchmark](https://datacircle.dev/best-domain-authority-api.txt) yet.
We rank 235 plans for domain authority APIs by price. Half the plans cost $3.98 or less per 1,000 domains. This plan costs less per 1,000 domains than 15% of the 235 plans.
[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 domain authority API costs nothing beyond the plan price. [Pixel Tools's ₽99 pack](https://datacircle.dev/domain-authority-apis/pixel-tools/99-pack/llms.txt) costs the least for 10,000 domains a month: about $1.18.
[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.
[BacklinkMCP](https://datacircle.dev/domain-authority-apis/backlinkmcp/19-monthly/llms.txt), [Tranco](https://datacircle.dev/domain-authority-apis/tranco/free/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 the Datacircle benchmark.

- This page: https://datacircle.dev/domain-authority-apis/freeq/pay-as-you-go
- [Domain authority API: domain rank providers compared](https://datacircle.dev/best-domain-authority-api.txt)
- Get it: https://x402.freeq.one/tools?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- Request: `POST https://x402.freeq.one/tools/backlinks_overview`
- API key: not needed
- Its API docs: https://x402.freeq.one/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing#/paths/~1tools~1backlinks_overview
- Sold by: FreeQ (https://freeq.one?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing)
- Checked: 2026-11-09

## In the answer

- Completeness: 40%
- Backlinks: ✓
- Referring domains: ✓

## Price

- $ per 1,000 domains: $50.00
- Per: call
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Backlink overview for any domain — referring domains, backlink count, authority.

## Data

- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain. Optional: location_code, language_code
- Method: POST
- Path: /tools/backlinks_overview

## About the plan

- Plan: x402 pay per call
- Who can get it: anyone with a wallet paying each call in USDC on Base (x402), no account or API key

## The 3 fields the plan's answer can hold

referring domains, backlinks, authority

## FreeQ's plans (1)

- [FreeQ, pay as you go](https://datacircle.dev/domain-authority-apis/freeq/pay-as-you-go/llms.txt): $50.00 per 1,000, 40% complete

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

- `POST /tools/backlinks_overview`: [FreeQ, pay as you go](https://datacircle.dev/domain-authority-apis/freeq/pay-as-you-go/llms.txt)

## FreeQ's APIs (11)

- [FreeQ: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: tech stack API pricing, 1 plan](https://datacircle.dev/company-technology-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: domain authority API pricing, 1 plan](https://datacircle.dev/domain-authority-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: email finder API pricing, 1 plan](https://datacircle.dev/find-email-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: job postings API pricing, 1 plan](https://datacircle.dev/job-posting-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: people enrichment API pricing, 1 plan](https://datacircle.dev/person-enrichment-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: ranked keywords API pricing, 1 plan](https://datacircle.dev/ranked-keywords-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: related keywords API pricing, 1 plan](https://datacircle.dev/related-keywords-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: web scraping API pricing, 1 plan](https://datacircle.dev/web-scraping-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: keyword research API pricing, 1 plan](https://datacircle.dev/keyword-research-apis/freeq/pay-as-you-go/llms.txt)
- [FreeQ: SERP API pricing, 1 plan](https://datacircle.dev/serp-apis/freeq/pay-as-you-go/llms.txt)

## FreeQ: domain authority API alternatives

- [Bishopi, $3,348 yearly, Business, GET /backlinks_summary/](https://datacircle.dev/domain-authority-apis/bishopi/3348-yearly-business-get-backlinks-summary/llms.txt): $46.50 per 1,000, 80% 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
- [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
- [AIsa, $19 monthly, Builder, GET /apis/v1/ahrefs/site-explorer/domain-rating](https://datacircle.dev/domain-authority-apis/aisa/19-monthly-builder-get-apis-v1-ahrefs-site-explorer-domain-rating/llms.txt): $50.667 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 2026-11-09.

- https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- https://x402.freeq.one/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- https://x402.freeq.one/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- https://x402.freeq.one/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing
- https://x402.freeq.one/tools?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing