# OnchainCheck, pay as you go: Tech stack API

> The technologies a website runs on, from one fetch of the page: CMS, e-commerce platform, frameworks, analytics and tag managers, marketing and chat tools, payments, CDN, hosting and web server, about 85 signatures. Each with its category, plus a by-category summary.

OnchainCheck's x402 pay per call plan for the tech stack API costs $2.00 per 1,000 companies. We check each provider's docs for 13 fields. OnchainCheck's docs list 2: Technology, Categories.
We haven't run OnchainCheck through [our tech stack API benchmark](https://datacircle.dev/best-tech-stack-api.txt) yet.
We rank 450 plans for tech stack APIs by price. Half the plans cost $7.155 or less per 1,000 companies. This plan costs less per 1,000 companies than 72% of the 450 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 [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/onchaincheck/pay-as-you-go
- [Company technologies API: tech stack APIs compared](https://datacircle.dev/best-tech-stack-api.txt)
- Get it: https://onchaincheck.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Request: `GET https://onchaincheck.dev/web/tech`
- API key: not needed
- Its API docs: https://onchaincheck.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing#/paths/~1web~1tech
- Sold by: OnchainCheck (https://onchaincheck.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing)
- Checked: 2026-11-09

## In the answer

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

## Price

- $ per 1,000 companies: $2.00
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: The technologies a website runs on, from one fetch of the page: CMS, e-commerce platform, frameworks, analytics and tag managers, marketing and chat tools, payments, CDN, hosting and web server, about 85 signatures. Each with its category, plus a by-category summary.

## Data

- Freshness: live
- 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
- Method: GET
- Path: /web/tech

## About the plan

- Plan: x402 pay per call
- Who can get it: anyone with a wallet paying USDC on Base (x402), no account or API key

## The 9 fields the plan's answer can hold

requested URL, final URL, HTTP status, technology name, technology category, technologies by category, technology count, checked at, note

## OnchainCheck's plans (1)

- [OnchainCheck, pay as you go](https://datacircle.dev/company-technology-apis/onchaincheck/pay-as-you-go/llms.txt): $2.00 per 1,000, 15% complete, live

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

- `GET /web/tech`: [OnchainCheck, pay as you go](https://datacircle.dev/company-technology-apis/onchaincheck/pay-as-you-go/llms.txt)

## OnchainCheck's APIs (8)

- [OnchainCheck: company open jobs API pricing, 1 plan](https://datacircle.dev/company-open-job-apis/onchaincheck/pay-as-you-go/llms.txt)
- [OnchainCheck: tech stack API pricing, 1 plan](https://datacircle.dev/company-technology-apis/onchaincheck/pay-as-you-go/llms.txt)
- [OnchainCheck: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/onchaincheck/pay-as-you-go/llms.txt)
- [OnchainCheck: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/onchaincheck/pay-as-you-go/llms.txt)
- [OnchainCheck: email finder API pricing, 1 plan](https://datacircle.dev/find-email-apis/onchaincheck/pay-as-you-go/llms.txt)
- [OnchainCheck: web scraping API pricing, 1 plan](https://datacircle.dev/web-scraping-apis/onchaincheck/pay-as-you-go/llms.txt)
- [OnchainCheck: company enrichment API pricing, 1 plan, GET /company/enrich](https://datacircle.dev/company-enrichment-apis/onchaincheck/pay-as-you-go-x402-pay-per-call-get-company-enrich/llms.txt)
- [OnchainCheck: company enrichment API pricing, 1 plan, GET /sec/company](https://datacircle.dev/company-enrichment-apis/onchaincheck/pay-as-you-go-x402-pay-per-call-get-sec-company/llms.txt)
- [OnchainCheck: company enrichment API pricing, 1 plan, GET /vat/validate](https://datacircle.dev/company-enrichment-apis/onchaincheck/pay-as-you-go-x402-pay-per-call-get-vat-validate/llms.txt)
- [OnchainCheck: job postings API pricing, 1 plan, GET /jobs/new](https://datacircle.dev/job-posting-apis/onchaincheck/pay-as-you-go-x402-pay-per-call-get-jobs-new/llms.txt)
- [OnchainCheck: job postings API pricing, 1 plan, GET /jobs/search](https://datacircle.dev/job-posting-apis/onchaincheck/pay-as-you-go-x402-pay-per-call-get-jobs-search/llms.txt)

## OnchainCheck: tech stack API alternatives

- [Siftwright, $99 monthly](https://datacircle.dev/company-technology-apis/siftwright/99-monthly/llms.txt): $1.98 per 1,000, 15% complete, live
- [1Lookup, $1,999 monthly, Enterprise, POST /tech-stack-lookup](https://datacircle.dev/company-technology-apis/1lookup/1999-monthly-enterprise-post-tech-stack-lookup/llms.txt): $1.999 per 1,000, 23% complete, live
- [ReefAPI, $1,200 yearly](https://datacircle.dev/company-technology-apis/reefapi/1200-yearly/llms.txt): $2.00 per 1,000, 23% complete, live
- [Lordevo, pay as you go](https://datacircle.dev/company-technology-apis/lordevo/pay-as-you-go/llms.txt): $2.00 per 1,000, 15% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-09.

- https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://onchaincheck.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://onchaincheck.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing