# Bukvarix, free, Without registration, POST /v1/mkeywords/: Related keywords API

> получение ключевых слов в автоматическом режиме

Bukvarix's related keywords API on its Without registration plan. It costs $0.00 per 1,000 keywords. It returns 1 of the 6 key fields we check: Search volume.
Bukvarix limits how many results you get but gives no number.
We ran Bukvarix in [our related keywords API benchmark](https://datacircle.dev/best-related-keywords-api.txt). We didn't score any Bukvarix plan.
Half of the 169 plans we rank by price cost $0.45 per 1,000 keywords or less. This plan and 2 others tie for the lowest price per 1,000 keywords of the 169 plans.
[seodata.dev's $4.99 monthly plan](https://datacircle.dev/related-keywords-apis/seodata-dev/4-99-monthly/llms.txt) covers any number of keywords. seodata.dev's $4.99 monthly plan costs less up front than XMLRiver's ₽15,000 monthly plan.
[Bing Webmaster Tools](https://datacircle.dev/related-keywords-apis/bing-webmaster-tools/free/llms.txt), [DataForSEO](https://datacircle.dev/related-keywords-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-dataforseo-labs-google-keyword-ideas-live/llms.txt) and [Mangools](https://datacircle.dev/related-keywords-apis/mangools/15-monthly/llms.txt) are the best related keywords API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/related-keywords-apis/bukvarix/free-without-registration-post-v1-mkeywords
- [Related keywords API: 6 providers compared on price and data](https://datacircle.dev/best-related-keywords-api.txt)
- Get it: https://www.bukvarix.com/price.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Request: `POST https://api.bukvarix.com/v1/mkeywords/`
- API key: not needed
- Its API docs: https://www.bukvarix.com/api_keywords.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Sold by: Bukvarix (https://www.bukvarix.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 17%
- Search volume: ✓

## Price

- $ per 1,000 keywords: $0.00
- Per: result
- Billing: free

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: получение ключевых слов в автоматическом режиме

## Data

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

## Plan

- Pay: $0

## Rate limit

- Batch: 100

## Speed

- Answer: in the call

## The call

- You send: q, Content-Type header "application/x-www-form-urlencoded", format "csv". Optional: num, q2, report_type, result_count
- Method: POST
- Path: /v1/mkeywords/

## About the plan

- Plan: Without registration
- Who can get it: anyone

## The 5 fields the plan's answer can hold

keyword, word count, character count, search volume, exact search volume

## Bukvarix's plans (1)

- [Bukvarix, free, Without registration, POST /v1/mkeywords/](https://datacircle.dev/related-keywords-apis/bukvarix/free-without-registration-post-v1-mkeywords/llms.txt): $0.00 per 1,000, 17% complete

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

- `POST /v1/mkeywords/`: [Bukvarix, free, Without registration, POST /v1/mkeywords/](https://datacircle.dev/related-keywords-apis/bukvarix/free-without-registration-post-v1-mkeywords/llms.txt)
- `GET /v1/keywords/`: [Bukvarix, free, Without registration, GET /v1/keywords/](https://datacircle.dev/related-keywords-apis/bukvarix/free-without-registration-get-v1-keywords/llms.txt)

## Bukvarix's APIs (2)

- [Bukvarix: ranked keywords API pricing, 1 plan, GET /v1/site/, Keywords for one domain, Google regions](https://datacircle.dev/ranked-keywords-apis/bukvarix/free-without-registration-get-v1-site-keywords-for-one-domain-google-regions/llms.txt)
- [Bukvarix: ranked keywords API pricing, 1 plan, GET /v1/site/, Keywords for one domain, Yandex regions](https://datacircle.dev/ranked-keywords-apis/bukvarix/free-without-registration-get-v1-site-keywords-for-one-domain-yandex-regions/llms.txt)
- [Bukvarix: related keywords API pricing, 1 plan, POST /v1/mkeywords/](https://datacircle.dev/related-keywords-apis/bukvarix/free-without-registration-post-v1-mkeywords/llms.txt)

## Bukvarix: related keywords API alternatives

- [Bing Webmaster Tools, free](https://datacircle.dev/related-keywords-apis/bing-webmaster-tools/free/llms.txt): $0.00 per 1,000, 17% complete
- [DataForSEO, free, $1 trial credit, POST /v3/dataforseo_labs/google/keyword_ideas/live](https://datacircle.dev/related-keywords-apis/dataforseo/free-1-trial-credit-post-v3-dataforseo-labs-google-keyword-ideas-live/llms.txt): $0.00 per 1,000, 100% complete, 1 month
- [Mangools, free](https://datacircle.dev/related-keywords-apis/mangools/free/llms.txt): $0.00 per 1,000, 83% complete
- [AnyAPI, free trial key, POST /v1/run/seo.related_keywords](https://datacircle.dev/related-keywords-apis/anyapi/free-trial-key-post-v1-run-seo-related-keywords/llms.txt): $0.00 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://www.bukvarix.com/api.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.bukvarix.com/api_keywords.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.bukvarix.com/price.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.bukvarix.com/terms.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing