# AnyAPI, free trial key, POST /v1/run/ahrefs.keywords: Keyword research API

> Get the Ahrefs keyword-difficulty metrics for any search term: the difficulty score (0-100) and the number of referring domains a page needs to rank in the top 10 - as normalized JSON.

AnyAPI's keyword research API on its Free trial key plan. It costs $0.00 per 1,000 keywords. It returns 3 of the 6 key fields we check: Search volume, Cost per click, Keyword difficulty.
We rank 33 plans by price. [Mangools's $15 monthly plan](https://datacircle.dev/keyword-research-apis/mangools/15-monthly/llms.txt) costs the least per 1,000 keywords: as little as $0.0001. Mangools's $15 monthly plan covers up to 5,000,000 keywords a day.

- This page: https://datacircle.dev/keyword-research-apis/anyapi/free-trial-key-post-v1-run-ahrefs-keywords
- Get it: https://getanyapi.com/catalog
- Request: `POST https://api.getanyapi.com/v1/run/ahrefs.keywords`
- API key: with the plan, on https://getanyapi.com/catalog
- Its API docs: https://getanyapi.com/docs/api-reference/ahrefs/keywords
- Sold by: AnyAPI (https://getanyapi.com)
- Checked: 2026-10-29

## In the answer

- Completeness: 50%
- Search volume: ✓
- Cost per click: ✓
- Keyword difficulty: ✓

## Price

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

## Charges

- Also pays for: from the same budget: 469 other calls

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Get the Ahrefs keyword-difficulty metrics for any search term: the difficulty score (0-100) and the number of referring domains a page needs to rank in the top 10 - as normalized JSON.

## Data

- Keep data: no limit
- Use data: You are solely responsible for ensuring that your collection and use of Customer Data is lawful. This includes compliance with applicable laws (including data protection, intellectual property, and computer-access laws) and, where they apply to you, the terms of the websites and services from which data originates. [...] Do not collect non-public data (data accessible only behind a login, paywall, or other access control) without authorization from the source. [...] Comply with all data protection and privacy laws that apply to the personal data you collect (including the GDPR and US state privacy laws), including having a legal basis and honoring data-subject rights. Do not collect or use personal data to stalk, harass, dox, surveil, or otherwise harm individuals. Do not build profiles of individuals from sensitive data (such as health, biometric, or precise-location data) without a lawful basis. [...] Do not use the Service to engage in, support, or promote: Any unlawful activity, or any violation of third-party rights. Phishing, malware distribution, or any form of fraud or deception, including advertising or click fraud and obtaining the Service with intent to avoid payment. Spam or unsolicited bulk messaging, or building contact lists for them. Fake engagement: fabricated reviews, votes, followers, accounts, or coordinated disinformation. Harassment, threats, or incitement of violence. Child sexual abuse material in any form: zero tolerance, we report it to the relevant authorities. Violations of export-control or sanctions laws. [...] Do not resell raw access to the Service or operate a service that merely proxies it, without our written agreement.

## Plan

- Pay: $0
- You get: $0.05
- Enough for: about 9 calls, once
- Expires: 7 days

## Rate limit

- Batch: 1

## Speed

- Median: 9.24 s

## The call

- You send: keyword. Optional: country, source, allowFallbacks, ignoreSources, preferLatencyUnderMs
- Method: POST
- Path: /v1/run/ahrefs.keywords

## About the plan

- Plan: Free trial key
- Who can get it: anyone 18 or over, with no account, for business or professional use, not in an embargoed jurisdiction or on a restricted-party list

## The 13 fields the plan's answer can hold

keyword, country, search volume, cost per click, keyword difficulty, referring domains to rank, updated at, found, amount charged, result ID, replayed, serving source, results returned

## AnyAPI's plans (4)

- [AnyAPI, free trial key, POST /v1/run/ahrefs.keywords](https://datacircle.dev/keyword-research-apis/anyapi/free-trial-key-post-v1-run-ahrefs-keywords/llms.txt): $0.00 per 1,000, 50% complete
- [AnyAPI, free, Starting balance, POST /v1/run/ahrefs.keywords](https://datacircle.dev/keyword-research-apis/anyapi/free-starting-balance-post-v1-run-ahrefs-keywords/llms.txt): $0.00 per 1,000, 50% complete
- [AnyAPI, pay as you go, Pay per call with x402 and MPP, POST /v1/run/ahrefs.keywords](https://datacircle.dev/keyword-research-apis/anyapi/pay-as-you-go-pay-per-call-with-x402-and-mpp-post-v1-run-ahrefs-keywords/llms.txt): $5.01 per 1,000, 50% complete
- [AnyAPI, top-up from $10, Manual top-up, POST /v1/run/ahrefs.keywords](https://datacircle.dev/keyword-research-apis/anyapi/top-up-from-10-manual-top-up-post-v1-run-ahrefs-keywords/llms.txt): $5.01 per 1,000, 50% complete

## AnyAPI's calls for this API (4)

- `POST /v1/run/ahrefs.keywords`: [AnyAPI, free trial key, POST /v1/run/ahrefs.keywords](https://datacircle.dev/keyword-research-apis/anyapi/free-trial-key-post-v1-run-ahrefs-keywords/llms.txt)
- `POST /v1/run/seo.keyword_overview`: [AnyAPI, free trial key, POST /v1/run/seo.keyword_overview](https://datacircle.dev/keyword-research-apis/anyapi/free-trial-key-post-v1-run-seo-keyword-overview/llms.txt)
- `POST /v1/run/semrush.keywords`: [AnyAPI, free trial key, POST /v1/run/semrush.keywords](https://datacircle.dev/keyword-research-apis/anyapi/free-trial-key-post-v1-run-semrush-keywords/llms.txt)
- `POST /v1/run/seo.search_volume`: [AnyAPI, pay as you go, Pay per call with x402 and MPP, POST /v1/run/seo.search_volume](https://datacircle.dev/keyword-research-apis/anyapi/pay-as-you-go-pay-per-call-with-x402-and-mpp-post-v1-run-seo-search-volume/llms.txt)

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## AnyAPI: keyword research API alternatives

- [SpyFu, $2,244 yearly, Team / Agency, POST /apis/keyword_api/v2/related/getKeywordInformation](https://datacircle.dev/keyword-research-apis/spyfu/2244-yearly-team-agency-post-apis-keyword-api-v2-related-getkeywordinformation/llms.txt): $0.20 per 1,000, 33% complete, 1 month
- [DataForSEO, top-up from $50, Pay as you go, POST /v3/keywords_data/bing/search_volume/live](https://datacircle.dev/keyword-research-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-keywords-data-bing-search-volume-live/llms.txt): $0.45 per 1,000, 67% complete, live
- [Keywords Everywhere, $84 yearly](https://datacircle.dev/keyword-research-apis/keywords-everywhere/84-yearly/llms.txt): $0.84 per 1,000, 67% complete
- [RankParse, $15 monthly](https://datacircle.dev/keyword-research-apis/rankparse/15-monthly/llms.txt): $5.00 per 1,000, 50% 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 2026-10-29.

- https://api.getanyapi.com/catalog
- https://api.getanyapi.com/openapi.json
- https://getanyapi.com/
- https://getanyapi.com/acceptable-use
- https://getanyapi.com/api/linkedin/profile
- https://getanyapi.com/catalog
- https://getanyapi.com/docs
- https://getanyapi.com/docs/agent-self-signup
- https://getanyapi.com/docs/api-keys
- https://getanyapi.com/docs/api-reference/ahrefs/keywords
- https://getanyapi.com/docs/durable-requests
- https://getanyapi.com/docs/quickstart
- https://getanyapi.com/llms.txt
- https://getanyapi.com/terms