# LinkResearchTools, $17 pack: Domain authority API > The LRT API is based on the popular Bulk URL Analyzer (Juice Tool) and allows you to check up to 10,000 URLs per query with all the metrics that are available with LRT. LinkResearchTools's domain authority API on its Trial for Superhero Small plan. It returns 2 of the 5 key fields we check: Backlinks, Referring domains. We haven't run LinkResearchTools through [our domain authority API benchmark](https://datacircle.dev/best-domain-authority-api.txt) yet. This plan is a $17 pack. We rank 129 plans for domain authority APIs by price. Half the plans cost $3.98 per 1,000 domains or less. [DataForSEO's top-up from $50](https://datacircle.dev/domain-authority-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-backlinks-bulk-ranks-live/llms.txt) is the cheapest paid plan per 1,000 domains: $0.036. [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/linkresearchtools/17-pack - [Domain authority API: 4 providers compared on price and data](https://datacircle.dev/best-domain-authority-api.txt) - Get it: https://www.linkresearchtools.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing - Request: `POST https://app.linkresearchtools.com/toolkit/api.php` - API key: with the plan, on https://www.linkresearchtools.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing - Its API docs: https://smart.linkresearchtools.com/docs/03-discover-lrt/3-api-integrations/lrt-api/lrt-api-specification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing - Sold by: LinkResearchTools (https://www.linkresearchtools.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing) - Checked: 2026-11-04 ## In the answer - Completeness: 40% - Backlinks: ✓ - Referring domains: ✓ ## Price - Billing: pay first ## Charges - Also pays for: nothing else ## In their words - Their pitch: The LRT API is based on the popular Bulk URL Analyzer (Juice Tool) and allows you to check up to 10,000 URLs per query with all the metrics that are available with LRT. ## Data - Keep data: no limit - Use data: The Link Research Tools API is designed for internal customer applications only and specifically does not permit re-selling (like integration of the data into public available applications) of any data provided through the LinkResearchTools. For a reseller license, please contact us, we would be happy to provide data for your application. With this Agreement the Client agrees not to reproduce, duplicate, copy, sell, trade, resell, modify, and create derivative works, or exploit for any commercial purposes, any portion of the Service. ## Plan - Pay: $17 - You get: 20 credits - Expires: at the end of the billing period ## Rate limit - Batch: 10,000 ## Speed - Answer: by polling ## The call - You send: action "start_report", urls[], values[]. Optional: url_boost, tool, title, project - Method: POST - Path: /toolkit/api.php ## About the plan - Plan: Trial for Superhero Small - Who can get it: anyone, it renews into the monthly Superhero Small plan at $599 unless cancelled ## The 8 fields the plan's answer can hold URL, LRT Power, LRT Trust, backlinks, referring domains, country popularity, IP popularity, Class-C popularity ## LinkResearchTools's plans (14) - [LinkResearchTools, $17 pack](https://datacircle.dev/domain-authority-apis/linkresearchtools/17-pack/llms.txt): 40% complete - [LinkResearchTools, $599 monthly](https://datacircle.dev/domain-authority-apis/linkresearchtools/599-monthly/llms.txt): 40% complete - [LinkResearchTools, $999 monthly](https://datacircle.dev/domain-authority-apis/linkresearchtools/999-monthly/llms.txt): 40% complete - [LinkResearchTools, $2,499 monthly](https://datacircle.dev/domain-authority-apis/linkresearchtools/2499-monthly/llms.txt): 40% complete - [LinkResearchTools, $1,739 quarterly](https://datacircle.dev/domain-authority-apis/linkresearchtools/1739-quarterly/llms.txt): 40% complete - [LinkResearchTools, $2,899 quarterly](https://datacircle.dev/domain-authority-apis/linkresearchtools/2899-quarterly/llms.txt): 40% complete - [LinkResearchTools, $6,199 quarterly](https://datacircle.dev/domain-authority-apis/linkresearchtools/6199-quarterly/llms.txt): 40% complete - [LinkResearchTools, $3,399 half-yearly](https://datacircle.dev/domain-authority-apis/linkresearchtools/3399-half-yearly/llms.txt): 40% complete - [LinkResearchTools, $5,999 half-yearly](https://datacircle.dev/domain-authority-apis/linkresearchtools/5999-half-yearly/llms.txt): 40% complete - [LinkResearchTools, $12,999 half-yearly](https://datacircle.dev/domain-authority-apis/linkresearchtools/12999-half-yearly/llms.txt): 40% complete - [LinkResearchTools, $5,799 yearly](https://datacircle.dev/domain-authority-apis/linkresearchtools/5799-yearly/llms.txt): 40% complete - [LinkResearchTools, $9,499 yearly](https://datacircle.dev/domain-authority-apis/linkresearchtools/9499-yearly/llms.txt): 40% complete - [LinkResearchTools, $23,999 yearly](https://datacircle.dev/domain-authority-apis/linkresearchtools/23999-yearly/llms.txt): 40% complete - [LinkResearchTools, contact us](https://datacircle.dev/domain-authority-apis/linkresearchtools/contact-us/llms.txt): 40% complete ## LinkResearchTools's calls (1) - `POST /toolkit/api.php`: [LinkResearchTools, $17 pack](https://datacircle.dev/domain-authority-apis/linkresearchtools/17-pack/llms.txt) ## LinkResearchTools's APIs (1) - [LinkResearchTools: domain authority API pricing, 14 plans](https://datacircle.dev/domain-authority-apis/linkresearchtools/17-pack/llms.txt) ## 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://smart.linkresearchtools.com/docs/03-discover-lrt/3-api-integrations/lrt-api/linkresearchtools-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing - https://smart.linkresearchtools.com/docs/03-discover-lrt/3-api-integrations/lrt-api/lrt-api-specification?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing - https://smart.linkresearchtools.com/docs/product-faq/billing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing - https://www.linkresearchtools.com/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing - https://www.linkresearchtools.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing - https://www.linkresearchtools.com/seo-tools/backlink-checker/bulk-url-analyzer/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-authority-api-pricing