# Seolyticize, free: Tech stack API

> The technologies our own crawler detected on any domain — CMS, analytics, commerce, CDN and so on — with the version most pages showed and how many pages showed it, as of the day it was last crawled. Answers 'what is this site built on'. Free. Null when our crawler has never fetched the domain, which says nothing about what it runs.

Seolyticize's Early access plan for the tech stack API costs $0.00 per 1,000 companies. Seolyticize's docs list 2 of the 13 fields on our checklist: Technology, Categories.
Seolyticize limits how many calls you get but gives no number.
In [our tech stack API benchmark](https://datacircle.dev/best-tech-stack-api.txt), this plan scores 0.0 out of 100. Seolyticize ranks 38th of 38 providers.
Half of the 383 plans we rank by price cost $6.32 per 1,000 companies or less. This plan and 1 other tie for the lowest price per 1,000 companies of the 383 plans. [See the best free tech stack API plan.](https://datacircle.dev/best-tech-stack-api.txt)
[GetProspect's $49 monthly plan](https://datacircle.dev/company-technology-apis/getprospect/49-monthly/llms.txt) covers any number of companies. GetProspect's $49 monthly plan costs less up front than cl0q's $50 monthly plan.
[JobsPipe](https://datacircle.dev/company-technology-apis/jobspipe/149-monthly-growth-post-v1-stack-scan/llms.txt), [DetectZeStack](https://datacircle.dev/company-technology-apis/detectzestack/79-monthly-mega-get-analyze/llms.txt) and [GetProspect](https://datacircle.dev/company-technology-apis/getprospect/49-monthly/llms.txt) are the best tech stack API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/company-technology-apis/seolyticize/free
- [Company technologies API: tech stack APIs compared](https://datacircle.dev/best-tech-stack-api.txt)
- Get it: https://seolyticize.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Request: `POST https://seolyticize.com/api/v1/tools/get_domain_technologies`
- API key: with the plan, on https://seolyticize.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Its API docs: https://seolyticize.com/docs/ref-get-domain-technologies?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Sold by: Seolyticize (https://seolyticize.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 15%
- Technology: ✓
- Categories: ✓

## Score

- Overall score: 0.0. We give it 0 overall because its Accuracy score is 0.
- Price score: 100
- Accuracy score: 0
- Cost to get started score: 100
- Bundle score: 67
- Performance score: 100

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: about 500 other calls · from the same budget: about 500 other calls: 600 requests a minute per key

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: The technologies our own crawler detected on any domain — CMS, analytics, commerce, CDN and so on — with the version most pages showed and how many pages showed it, as of the day it was last crawled. Answers 'what is this site built on'. Free. Null when our crawler has never fetched the domain, which says nothing about what it runs.

## Data

- Freshness: stored
- Keep data: no limit
- Use data: You must not use the platform to crawl a site you have no relationship with, to gather data on behalf of someone who could not gather it themselves, or in a way intended to burden a site rather than measure it.

## Plan

- Pay: $0

## Rate limit

- Per second: 10
- Batch: 1

## Speed

- Answer: in the call
- Median: 0.07 s

## The call

- You send: domain
- Method: POST
- Path: /api/v1/tools/get_domain_technologies

## About the plan

- Plan: Early access
- Who can get it: the agency holding the account

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

technologies, technology category, technology version, pages showing technology, last crawled

## Seolyticize's plans (1)

- [Seolyticize, free](https://datacircle.dev/company-technology-apis/seolyticize/free/llms.txt): $0.00 per 1,000, 15% complete, stored

## Seolyticize's calls for this API (1)

- `POST /api/v1/tools/get_domain_technologies`: [Seolyticize, free](https://datacircle.dev/company-technology-apis/seolyticize/free/llms.txt)

## Seolyticize's APIs (4)

- [Seolyticize: backlink API pricing, 1 plan](https://datacircle.dev/backlink-apis/seolyticize/free/llms.txt)
- [Seolyticize: tech stack API pricing, 1 plan](https://datacircle.dev/company-technology-apis/seolyticize/free/llms.txt)
- [Seolyticize: domain authority API pricing, 1 plan](https://datacircle.dev/domain-authority-apis/seolyticize/free/llms.txt)
- [Seolyticize: keyword research API pricing, 1 plan](https://datacircle.dev/keyword-research-apis/seolyticize/free/llms.txt)

## Seolyticize: tech stack API alternatives

- [DetectZeStack, free, GET /changes](https://datacircle.dev/company-technology-apis/detectzestack/free-get-changes/llms.txt): $0.00 per 1,000, 15% complete, stored
- [Tomba, free](https://datacircle.dev/company-technology-apis/tomba/free/llms.txt): $0.00 per 1,000, 15% complete, stored
- [AgentData, free, No account](https://datacircle.dev/company-technology-apis/agentdata/free-no-account/llms.txt): $0.00 per 1,000, 46% complete, stored
- [cl0q, free](https://datacircle.dev/company-technology-apis/cl0q/free/llms.txt): $0.00 per 1,000, 23% complete, stored
- [ZoomInfo, free](https://datacircle.dev/company-technology-apis/zoominfo/free/llms.txt): $0.00 per 1,000, 15% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.

- https://seolyticize.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://seolyticize.com/api/v1/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://seolyticize.com/docs/authentication?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://seolyticize.com/docs/costs-and-spending-limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://seolyticize.com/docs/errors-and-limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://seolyticize.com/docs/introduction?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://seolyticize.com/docs/ref-get-domain-technologies?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://seolyticize.com/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing