# W3Techs, €100 pack: Tech stack API

> We provide an API to retrieve the technologies used by a website in JSON format.

W3Techs's tech stack API on its "1,000 requests" plan. It costs $112.53 per 1,000 companies. It returns 2 of the 13 key fields we check: Technology, Categories.
€100.00 per 1,000 companies is $112.53 at the European Central Bank's rate of $1.1253 for €1.
We haven't run W3Techs through [our tech stack API benchmark](https://datacircle.dev/best-tech-stack-api.txt) yet.
Half of the 310 plans we rank by price cost $8.90 per 1,000 companies or less. This plan costs less per 1,000 companies than 8% of the 310 plans.
[Botoi's $199 monthly plan](https://datacircle.dev/company-technology-apis/botoi/199-monthly/llms.txt) is the cheapest paid plan per 1,000 companies: as little as $0.0066. Botoi's $199 monthly plan covers up to 1,000,000 companies a day.
[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 Botoi's $199 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/w3techs/100-pack
- [Tech stack API: find a company's technologies](https://datacircle.dev/best-tech-stack-api.txt)
- Get it: https://w3techs.com/apidoc?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Request: `GET https://w3techs.com/api/siteinfo/{domain}/{apikey}`
- API key: with the plan, on https://w3techs.com/apidoc?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Its API docs: https://w3techs.com/apidoc?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Sold by: W3Techs (https://w3techs.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing)
- Checked: 2026-11-04

## In the answer

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

## Price

- $ per 1,000 companies: $112.53
- Per: call
- Billing: pay first

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: We provide an API to retrieve the technologies used by a website in JSON format.

## Data

- Freshness: stored
- Keep data: no limit
- Use data: within your organization and in direct non-public communication with your business partners: "Purchasing this data entitles you to use the information within your organization and in direct non-public communication with your business partners. The data may not be published or sold to third parties."

## Plan

- Pay: €100
- You get: 1,000 requests
- Enough for: 1,000 calls
- Expires: a year

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: GET
- Path: /api/siteinfo/{domain}/{apikey}

## About the plan

- Plan: 1,000 requests
- Who can get it: anyone who registers as a user on the site

## The 6 fields the plan's answer can hold

domain, technology category, technologies, technology version, newer version share, technology location

## W3Techs's plans (11)

- [W3Techs, €100 pack](https://datacircle.dev/company-technology-apis/w3techs/100-pack/llms.txt): $112.53 per 1,000, 15% complete, stored
- [W3Techs, €200 pack](https://datacircle.dev/company-technology-apis/w3techs/200-pack/llms.txt): $75.02 per 1,000, 15% complete, stored
- [W3Techs, €500 pack](https://datacircle.dev/company-technology-apis/w3techs/500-pack/llms.txt): $56.265 per 1,000, 15% complete, stored
- [W3Techs, €1,000 pack](https://datacircle.dev/company-technology-apis/w3techs/1000-pack/llms.txt): $37.51 per 1,000, 15% complete, stored
- [W3Techs, €2,000 pack](https://datacircle.dev/company-technology-apis/w3techs/2000-pack/llms.txt): $22.506 per 1,000, 15% complete, stored
- [W3Techs, €100 monthly](https://datacircle.dev/company-technology-apis/w3techs/100-monthly/llms.txt): $112.53 per 1,000, 15% complete, stored
- [W3Techs, €200 monthly](https://datacircle.dev/company-technology-apis/w3techs/200-monthly/llms.txt): $75.02 per 1,000, 15% complete, stored
- [W3Techs, €500 monthly](https://datacircle.dev/company-technology-apis/w3techs/500-monthly/llms.txt): $56.265 per 1,000, 15% complete, stored
- [W3Techs, €1,000 monthly](https://datacircle.dev/company-technology-apis/w3techs/1000-monthly/llms.txt): $37.51 per 1,000, 15% complete, stored
- [W3Techs, €2,000 monthly](https://datacircle.dev/company-technology-apis/w3techs/2000-monthly/llms.txt): $22.506 per 1,000, 15% complete, stored
- [W3Techs, contact us](https://datacircle.dev/company-technology-apis/w3techs/contact-us/llms.txt): 15% complete, stored

## W3Techs's calls (1)

- `GET /api/siteinfo/{domain}/{apikey}`: [W3Techs, €100 pack](https://datacircle.dev/company-technology-apis/w3techs/100-pack/llms.txt)

## W3Techs's APIs (1)

- [W3Techs: tech stack API pricing, 11 plans](https://datacircle.dev/company-technology-apis/w3techs/100-pack/llms.txt)

## W3Techs: tech stack API alternatives

- [Klazify, $39.99 monthly](https://datacircle.dev/company-technology-apis/klazify/39-99-monthly/llms.txt): $79.98 per 1,000, 0% complete, stored
- [Coresignal, $1,000 monthly](https://datacircle.dev/company-technology-apis/coresignal/1000-monthly/llms.txt): $93.333 per 1,000, 8% complete, stored
- [The Swarm, $99 monthly](https://datacircle.dev/company-technology-apis/the-swarm/99-monthly/llms.txt): $99.00 per 1,000, 38% complete, stored
- [BuiltWith, $2,950 yearly, Basic, GET /v26/api.json, Domain API](https://datacircle.dev/company-technology-apis/builtwith/2950-yearly/llms.txt): $122.917 per 1,000, 85% 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 2026-11-04.

- https://w3techs.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://w3techs.com/apidoc?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://w3techs.com/faq?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://w3techs.com/terms_of_use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing