# host.io, free: Backlink API

> Domains that include a link to the domain on their homepage

host.io's backlink API on its Free plan. It costs $0.00 per 1,000 backlinks. It returns 1 of the 5 key fields we check: Source URL.
We haven't run host.io through [our backlink API benchmark](https://datacircle.dev/best-backlink-api.txt) yet.
This plan is free. We rank 84 plans for backlink APIs by price. Half the plans cost $0.40 per 1,000 backlinks or less.
[RankParse's $199 pack](https://datacircle.dev/backlink-apis/rankparse/199-pack-lifetime-deal-get-v1-backlinks/llms.txt) costs the least per 1,000 backlinks: $0.004. RankParse charges for each page of results. We count 1,000 backlinks on each page to get the $0.004 price.
[DataForSEO](https://datacircle.dev/backlink-apis/dataforseo/top-up-from-50/llms.txt), [SE Ranking](https://datacircle.dev/backlink-apis/se-ranking/29-monthly-add-on-monthly-billing-get-v1-backlinks-raw/llms.txt) and [RankParse](https://datacircle.dev/backlink-apis/rankparse/15-monthly-pro-monthly-get-v1-backlinks/llms.txt) are the best backlink API providers in our benchmark.

- This page: https://datacircle.dev/backlink-apis/host-io/free
- [Backlink API: 3 providers compared on price and data](https://datacircle.dev/best-backlink-api.txt)
- Get it: https://host.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing
- Request: `GET https://host.io/api/domains/backlinks/{value}`
- API key: with the plan, on https://host.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing
- Its API docs: https://host.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing
- Sold by: host.io (https://host.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 20%
- Source URL: ✓

## Price

- $ per 1,000 backlinks: $0.00
- Per: page of 5
- Billing: free

## Charges

- Also pays for: from the same budget: /api/web/:domain · /api/dns/:domain · /api/related/:domain · /api/full/:domain · /api/domains/:field/:value

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Domains that include a link to the domain on their homepage

## Data

- Freshness: 1 month
- Keep data: no limit
- Use data: "When using a free version of the Services, this license is strictly limited to your personal, non-commercial use, in the manner permitted by these Terms." "You may not (and you may not permit anyone else to): (i) copy, modify, create a derivative work of, reverse engineer, decompile or otherwise attempt to extract the source code of the Services or any part thereof, unless this is expressly permitted or required by law, or unless you have been specifically told that you may do so by Host.io, in writing (e.g., through an open source software license), or (ii) attempt to disable or circumvent any security mechanisms used by the Services or any applications running on the Services." "You may not engage in any activity that interferes with or disrupts the Services (or the servers and networks which are connected to the Services)." "You may not access the Services in a manner intended to avoid incurring fees or exceeding usage limits or quotas." "You may not access the Services for the purpose of bringing an intellectual property infringement claim against Host.io or for the purpose of creating a product or service competitive with the Services. You may not use any robot, spider, site search/retrieval application or other manual or automatic program or device to retrieve, index, “scrape,” “data mine” or in any way gather Content from the Services. You may not use the Services to assemble email lists for the purposes of sending out mass emails or “spam.” You may not access the Services for the purpose of collecting Content for sale or resale without the express written consent of Host.io." (Terms of Service, host.io/terms)

## Plan

- Pay: $0
- You get: 1,000 requests a month
- Enough for: 1,000 pages a month

## Rate limit

- Batch: 1

## The call

- You send: value. Optional: limit, page
- Method: GET
- Path: /api/domains/backlinks/{value}

## About the plan

- Plan: Free
- Who can get it: anyone over 13 years of age

## The 4 fields the plan's answer can hold

target, total results, page, source domain

## host.io's plans (4)

- [host.io, free](https://datacircle.dev/backlink-apis/host-io/free/llms.txt): $0.00 per 1,000, 20% complete, 1 month
- [host.io, $99 monthly](https://datacircle.dev/backlink-apis/host-io/99-monthly/llms.txt): $0.198 per 1,000, 20% complete, 1 month
- [host.io, $499 monthly](https://datacircle.dev/backlink-apis/host-io/499-monthly/llms.txt): $0.02 per 1,000, 20% complete, 1 month
- [host.io, contact us](https://datacircle.dev/backlink-apis/host-io/contact-us/llms.txt): $0.002 per 1,000, 20% complete, 1 month

## host.io's calls for this API (1)

- `GET /api/domains/backlinks/{value}`: [host.io, free](https://datacircle.dev/backlink-apis/host-io/free/llms.txt)

## host.io's APIs (2)

- [host.io: backlink API pricing, 4 plans](https://datacircle.dev/backlink-apis/host-io/free/llms.txt)
- [host.io: domain authority API pricing, 4 plans](https://datacircle.dev/domain-authority-apis/host-io/free/llms.txt)

## host.io: backlink API alternatives

- [SE Ranking, $29 monthly, Add-on, monthly billing, GET /v1/backlinks/raw](https://datacircle.dev/backlink-apis/se-ranking/29-monthly-add-on-monthly-billing-get-v1-backlinks-raw/llms.txt): $0.193 per 1,000, 100% 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 2026-11-04.

- https://host.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing
- https://host.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing
- https://host.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing
- https://host.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing
- https://support.host.io/hc/en-us/articles/33021412411922-What-is-the-usage-limit-for-users-on-the-free-plan?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing
- https://support.host.io/hc/en-us/articles/33021424371474-What-happens-if-I-exceed-my-rate-limit?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing
- https://support.host.io/hc/en-us/articles/33021428241810-How-often-do-you-update-your-data?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=backlink-api-pricing