# HALOWERK, pay as you go, x402, POST /stack: Tech stack API

> Identify the technology stack of one website: CMS, shop, framework, JavaScript libraries with version, analytics, consent tool, payment provider, CDN, web server, host, font source, chat and booking widget.

HALOWERK's x402 plan for the tech stack API costs $5.00 per 1,000 companies. We check each provider's docs for 13 fields. HALOWERK's docs list 2: Technology, Categories.
We haven't run HALOWERK through [our tech stack API benchmark](https://datacircle.dev/best-tech-stack-api.txt) yet.
We rank 490 plans for tech stack APIs by price. Half the plans cost $7.833 or less per 1,000 companies. This plan costs less per 1,000 companies than 52% of the 490 plans.
[cl0q's $50 monthly plan](https://datacircle.dev/company-technology-apis/cl0q/50-monthly/llms.txt) is the cheapest paid plan per 1,000 companies: $0.0042. [Enterno's ₽2,511 yearly plan](https://datacircle.dev/company-technology-apis/enterno/2511-yearly-explorer-get-api-v4-cms/llms.txt) costs the least for 10,000 companies a month: about $2.50.
[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 [Botoi](https://datacircle.dev/company-technology-apis/botoi/9-monthly/llms.txt) are the best tech stack API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-stack
- [Company technologies API: tech stack APIs compared](https://datacircle.dev/best-tech-stack-api.txt)
- Get it: https://stack.halowerk.com/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Request: `POST https://stack.halowerk.com/stack`
- API key: not needed
- Its API docs: https://stack.halowerk.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Sold by: HALOWERK (https://halowerk.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing)
- Checked: 2026-11-10

## In the answer

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

## Price

- $ per 1,000 companies: $5.00
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Identify the technology stack of one website: CMS, shop, framework, JavaScript libraries with version, analytics, consent tool, payment provider, CDN, web server, host, font source, chat and booking widget.

## Data

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

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: url. Optional: render, refresh
- Method: POST
- Path: /stack

## About the plan

- Plan: x402
- Who can get it: anyone

## The 7 fields the plan's answer can hold

url, host, technology name, technology category, technology version, confidence score, evidence

## HALOWERK's plans (2)

- [HALOWERK, pay as you go, x402, POST /stack](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-stack/llms.txt): $5.00 per 1,000, 15% complete
- [HALOWERK, $0.99 pack](https://datacircle.dev/company-technology-apis/halowerk/0-99-pack/llms.txt): $2.475 per 1,000, 15% complete

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

- `POST /stack`: [HALOWERK, pay as you go, x402, POST /stack](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-stack/llms.txt)
- `POST /stack/batch`: [HALOWERK, pay as you go, x402, POST /stack/batch](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-stack-batch/llms.txt)
- `POST /stack/batch/25`: [HALOWERK, pay as you go, x402, POST /stack/batch/25](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-stack-batch-25/llms.txt)
- `POST /v1/tech/detect`: [HALOWERK, pay as you go, x402, POST /v1/tech/detect](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-v1-tech-detect/llms.txt)

## HALOWERK's APIs (8)

- [HALOWERK: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/halowerk/pay-as-you-go/llms.txt)
- [HALOWERK: tech stack API pricing, 2 plans, POST /stack](https://datacircle.dev/company-technology-apis/halowerk/pay-as-you-go-x402-post-stack/llms.txt)
- [HALOWERK: web scraping API pricing, 1 plan, POST /batch/extract](https://datacircle.dev/web-scraping-apis/halowerk/pay-as-you-go-x402-post-batch-extract/llms.txt)
- [HALOWERK: web scraping API pricing, 1 plan, POST /extract](https://datacircle.dev/web-scraping-apis/halowerk/pay-as-you-go-x402-post-extract/llms.txt)
- [HALOWERK: IP company lookup API pricing, 1 plan, POST /ip](https://datacircle.dev/ip-company-lookup-apis/halowerk/pay-as-you-go-x402-post-ip/llms.txt)
- [HALOWERK: IP company lookup API pricing, 1 plan, POST /ip/batch](https://datacircle.dev/ip-company-lookup-apis/halowerk/pay-as-you-go-x402-post-ip-batch/llms.txt)
- [HALOWERK: IP company lookup API pricing, 1 plan, POST /v1/ip/reputation](https://datacircle.dev/ip-company-lookup-apis/halowerk/pay-as-you-go-x402-post-v1-ip-reputation/llms.txt)

## HALOWERK: tech stack API alternatives

- [Companyfacts, $10 pack](https://datacircle.dev/company-technology-apis/companyfacts/10-pack/llms.txt): $5.00 per 1,000, 8% complete, live
- [HirePulse, pay as you go](https://datacircle.dev/company-technology-apis/hirepulse/pay-as-you-go/llms.txt): $5.00 per 1,000, 8% complete
- [The Swarm, $72,000 yearly](https://datacircle.dev/company-technology-apis/the-swarm/72000-yearly/llms.txt): $5.00 per 1,000, 38% complete, stored
- [Agent Extraction API, pay as you go](https://datacircle.dev/company-technology-apis/agent-extraction-api/pay-as-you-go/llms.txt): $5.00 per 1,000, 8% 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 2026-11-10.

- https://halowerk.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://halowerk.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://stack.halowerk.com/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://stack.halowerk.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://tools.halowerk.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://tools.halowerk.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing