# LucidExtractor, free: Keyword research API > Analyze search engine results pages for any keyword with metrics, rankings, and related keywords. LucidExtractor's keyword research API on its Free plan. It costs $0.00 per 1,000 keywords. It returns 5 of the 6 key fields we check: Search volume, Monthly trend, Cost per click, Competition, Keyword difficulty. We rank 80 plans by price. [Mangools's $15 monthly plan](https://datacircle.dev/keyword-research-apis/mangools/15-monthly/llms.txt) is the cheapest paid plan per 1,000 keywords: as little as $0.0001. Mangools's $15 monthly plan covers up to 5,000,000 keywords a day. [DataForSEO](https://datacircle.dev/keyword-research-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-dataforseo-labs-google-keyword-overview-live/llms.txt), [Bing Webmaster Tools](https://datacircle.dev/keyword-research-apis/bing-webmaster-tools/free-get-webmaster-api-svc-json-getkeywordstats/llms.txt) and [Mangools](https://datacircle.dev/keyword-research-apis/mangools/15-monthly/llms.txt) are the best keyword research API providers in our benchmark. - This page: https://datacircle.dev/keyword-research-apis/lucidextractor/free - [Best keyword research API in 2026: providers compared](https://datacircle.dev/best-keyword-research-api.txt) - Get it: https://lucidextractor.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - Request: `POST https://api.lucidextractor.com/v1/serp/analyze` - API key: with the plan, on https://lucidextractor.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - Its API docs: https://lucidextractor.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing#serp-analysis - Sold by: LucidExtractor (https://lucidextractor.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing) - Checked: 2026-11-01 ## In the answer - Completeness: 83% - Search volume: ✓ - Monthly trend: ✓ - Cost per click: ✓ - Competition: ✓ - Keyword difficulty: ✓ ## Price - $ per 1,000 keywords: $0.00 - Per: call - Billing: free ## Charges - Also pays for: from the same budget: Single URL scraping · Bulk URL scraping · Browser session reuse · Website crawling · AI data extraction · SEO analysis · Advanced SEO audit · Trending Keywords · Create Monitor · Create Schedule ## Overage - Units cap: hard ## Not found - $ per 1,000: $0.00 ## In their words - Their pitch: Analyze search engine results pages for any keyword with metrics, rankings, and related keywords. ## Data - Keep data: no limit - Use data: Subject to these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to access and use the Service for your personal or internal business purposes. [...] You agree to use the Service only for lawful purposes and in accordance with these Terms. [...] Your Responsibilities: Ensure you have the legal right to scrape target websites, Comply with target websites' robots.txt and terms of service, Do not overwhelm or damage target websites with excessive requests, Respect intellectual property and copyright laws, Protect your API keys and account credentials. [...] The following activities are strictly prohibited: Scraping personal data without proper legal basis (GDPR, CCPA compliance), Harvesting email addresses or contact information for spam, Circumventing security measures of websites that prohibit scraping, Engaging in competitive intelligence gathering that violates laws, Distributing malware or conducting cyber attacks, Reselling, sublicensing, or redistributing the Service without authorization, Reverse engineering, decompiling, or attempting to extract source code, Creating multiple accounts to abuse free credit offerings, Using the Service for any illegal, fraudulent, or harmful purpose ## Plan - Pay: $0 - You get: 500 credits a month - Enough for: about 166 calls a month ## Rate limit - Concurrent: 2 - Batch: 1 ## Speed - Answer: in the call ## The call - You send: keyword. Optional: location, language - Method: POST - Path: /v1/serp/analyze ## About the plan - Plan: Free - Who can get it: anyone 18 or over ## The 6 fields the plan's answer can hold keyword, search volume, search volume trend, cost per click, competition level, keyword difficulty ## LucidExtractor's plans (10) - [LucidExtractor, free](https://datacircle.dev/keyword-research-apis/lucidextractor/free/llms.txt): $0.00 per 1,000, 83% complete - [LucidExtractor, $5 pack](https://datacircle.dev/keyword-research-apis/lucidextractor/5-pack/llms.txt): $15.00 per 1,000, 83% complete - [LucidExtractor, $20 pack](https://datacircle.dev/keyword-research-apis/lucidextractor/20-pack/llms.txt): $12.00 per 1,000, 83% complete - [LucidExtractor, $75 pack](https://datacircle.dev/keyword-research-apis/lucidextractor/75-pack/llms.txt): $9.00 per 1,000, 83% complete - [LucidExtractor, $240 pack](https://datacircle.dev/keyword-research-apis/lucidextractor/240-pack/llms.txt): $7.20 per 1,000, 83% complete - [LucidExtractor, $900 pack](https://datacircle.dev/keyword-research-apis/lucidextractor/900-pack/llms.txt): $5.40 per 1,000, 83% complete - [LucidExtractor, $12 monthly](https://datacircle.dev/keyword-research-apis/lucidextractor/12-monthly/llms.txt): $7.20 per 1,000, 83% complete - [LucidExtractor, $45 monthly](https://datacircle.dev/keyword-research-apis/lucidextractor/45-monthly/llms.txt): $5.40 per 1,000, 83% complete - [LucidExtractor, $149 monthly](https://datacircle.dev/keyword-research-apis/lucidextractor/149-monthly/llms.txt): $4.47 per 1,000, 83% complete - [LucidExtractor, contact us](https://datacircle.dev/keyword-research-apis/lucidextractor/contact-us/llms.txt): 83% complete ## LucidExtractor's calls for this API (1) - `POST /v1/serp/analyze`: [LucidExtractor, free](https://datacircle.dev/keyword-research-apis/lucidextractor/free/llms.txt) ## LucidExtractor's APIs (3) - [LucidExtractor: keyword research API pricing, 10 plans](https://datacircle.dev/keyword-research-apis/lucidextractor/free/llms.txt) - [LucidExtractor: related keywords API pricing, 10 plans](https://datacircle.dev/related-keywords-apis/lucidextractor/free/llms.txt) - [LucidExtractor: web scraping API pricing, 10 plans, POST /v1/browser/batch](https://datacircle.dev/web-scraping-apis/lucidextractor/free-post-v1-browser-batch/llms.txt) - [LucidExtractor: web scraping API pricing, 10 plans, POST /v1/scrape/batch](https://datacircle.dev/web-scraping-apis/lucidextractor/free-post-v1-scrape-batch/llms.txt) - [LucidExtractor: web scraping API pricing, 10 plans, POST /v1/scrape/scrape](https://datacircle.dev/web-scraping-apis/lucidextractor/free-post-v1-scrape-scrape/llms.txt) ## LucidExtractor: keyword research API alternatives - [SandBase, top-up, Build, POST /v1/api/semrush/keyword-overview](https://datacircle.dev/keyword-research-apis/sandbase/top-up-build-post-v1-api-semrush-keyword-overview/llms.txt): $1.00 per 1,000, 50% complete - [SocialCrawl, £49 pack](https://datacircle.dev/keyword-research-apis/socialcrawl/49-pack/llms.txt): $2.614 per 1,000, 83% complete - [AnyAPI, pay as you go, Pay per call with x402 and MPP, POST /v1/run/semrush.keywords](https://datacircle.dev/keyword-research-apis/anyapi/pay-as-you-go-pay-per-call-with-x402-and-mpp-post-v1-run-semrush-keywords/llms.txt): $4.95 per 1,000, 83% 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 2026-11-01. - https://lucidextractor.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - https://lucidextractor.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - https://lucidextractor.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - https://lucidextractor.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing