# Datakoot, free, POST /mcp, Tech Stack (MCP): Tech stack API

> Identity the technology behind a website by fetching its homepage. Detects web server, CMS/framework (WordPress, Shopify, Next.js, etc.), CDN, analytics, and returns the page title, final URL after redirects, and key response headers. Use for competitive research and lead enrichment.

Datakoot's Free plan for the tech stack API costs $0.00 per 1,000 companies. We check each provider's docs for 13 fields. Datakoot's docs list 2: Technology, About.
In [our tech stack API benchmark](https://datacircle.dev/best-tech-stack-api.txt), the best plan from Datakoot scores 42.6 out of 100. Datakoot ranks 14th of 44 providers.
This plan is free. We rank 450 plans for tech stack APIs by price. Half the plans cost $7.155 or less per 1,000 companies. [See the best free tech stack API plan.](https://datacircle.dev/best-tech-stack-api.txt)
[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/datakoot/free-post-mcp-tech-stack-mcp
- [Company technologies API: tech stack APIs compared](https://datacircle.dev/best-tech-stack-api.txt)
- Get it: https://datakoot.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Request: `POST https://domain.datakoot.com/mcp`, Tech Stack (MCP)
- API key: not needed
- Its API docs: https://x402.datakoot.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing#/paths/~1api~1tech_stack
- Sold by: Datakoot (https://datakoot.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing)
- Checked: 2026-11-09

## In the answer

- Completeness: 15%
- Technology: ✓
- About: ✓

## Price

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

## Aggregators

- Aggregators: none

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Identity the technology behind a website by fetching its homepage. Detects web server, CMS/framework (WordPress, Shopify, Next.js, etc.), CDN, analytics, and returns the page title, final URL after redirects, and key response headers. Use for competitive research and lead enrichment.

## Data

- Freshness: live
- Keep data: no limit
- Use data: You agree not to: use the Services for anything unlawful, attempt to break, overload, or circumvent rate limits or access controls, resell raw bulk data as a competing dataset, or use the Services in a way that violates the terms of the upstream data sources. [...] Where a source requires attribution (for example World Bank and OSV under CC-BY, or ECB data), that attribution is carried in the responses and must be preserved. Domain and company registration data (WHOIS/RDAP) is provided for lookup and verification use, you may not redistribute it as a standalone commercial dataset.

## Plan

- Pay: $0
- You get: 100 requests a day
- Enough for: 100 calls a day

## Rate limit

- Per day: 100
- Batch: 1

## Speed

- Answer: in the call
- Median: 0.29 s

## The call

- You send: jsonrpc "2.0", id, method "tools/call", params.name "tech_stack", params.arguments.domain
- Method: POST
- Path: /mcp

## About the plan

- Plan: Free
- Who can get it: anyone, with no key and no signup (100 calls a day per caller)

## The 10 fields the plan's answer can hold

url, HTTP status, title, web server, powered by, CDN, generator, technologies, analytics, security headers

## Datakoot's plans (3)

- [Datakoot, free, POST /mcp, Tech Stack (MCP)](https://datacircle.dev/company-technology-apis/datakoot/free-post-mcp-tech-stack-mcp/llms.txt): $0.00 per 1,000, 15% complete, live
- [Datakoot, pay as you go, x402 pay per call, POST /api/domain_report](https://datacircle.dev/company-technology-apis/datakoot/pay-as-you-go-x402-pay-per-call-post-api-domain-report/llms.txt): $10.00 per 1,000, 15% complete, live
- [Datakoot, $10 monthly, Pro, POST /mcp, Tech Stack (MCP)](https://datacircle.dev/company-technology-apis/datakoot/10-monthly-pro-post-mcp-tech-stack-mcp/llms.txt): $0.20 per 1,000, 15% complete, live

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

- `POST /mcp`, Domain Report (MCP): [Datakoot, free, POST /mcp, Domain Report (MCP)](https://datacircle.dev/company-technology-apis/datakoot/free-post-mcp-domain-report-mcp/llms.txt)
- `POST /mcp`, Tech Stack (MCP): [Datakoot, free, POST /mcp, Tech Stack (MCP)](https://datacircle.dev/company-technology-apis/datakoot/free-post-mcp-tech-stack-mcp/llms.txt)
- `POST /api/domain_report`: [Datakoot, pay as you go, x402 pay per call, POST /api/domain_report](https://datacircle.dev/company-technology-apis/datakoot/pay-as-you-go-x402-pay-per-call-post-api-domain-report/llms.txt)
- `POST /api/tech_stack`: [Datakoot, pay as you go, x402 pay per call, POST /api/tech_stack](https://datacircle.dev/company-technology-apis/datakoot/pay-as-you-go-x402-pay-per-call-post-api-tech-stack/llms.txt)

## Datakoot's APIs (4)

- [Datakoot: business verification API pricing, 3 plans](https://datacircle.dev/business-verification-apis/datakoot/free/llms.txt)
- [Datakoot: email verification API pricing, 3 plans](https://datacircle.dev/validate-email-apis/datakoot/free/llms.txt)
- [Datakoot: domain WHOIS API pricing, 3 plans, POST /mcp, Domain Intel (MCP)](https://datacircle.dev/domain-whois-apis/datakoot/free-post-mcp-domain-intel-mcp/llms.txt)
- [Datakoot: domain WHOIS API pricing, 3 plans, POST /mcp, Domain Report (MCP)](https://datacircle.dev/domain-whois-apis/datakoot/free-post-mcp-domain-report-mcp/llms.txt)
- [Datakoot: tech stack API pricing, 3 plans, POST /mcp, Tech Stack (MCP)](https://datacircle.dev/company-technology-apis/datakoot/free-post-mcp-tech-stack-mcp/llms.txt)

## Datakoot: tech stack API alternatives

- [Botoi, $9 monthly](https://datacircle.dev/company-technology-apis/botoi/9-monthly/llms.txt): $0.03 per 1,000, 23% complete, live
- [Enterno, ₽2,511 yearly, Explorer, GET /api/v4/tech-detect](https://datacircle.dev/company-technology-apis/enterno/2511-yearly-explorer-get-api-v4-tech-detect/llms.txt): $0.164 per 1,000, 8% complete, live
- [Detecto, €99 monthly](https://datacircle.dev/company-technology-apis/detecto/99-monthly/llms.txt): $0.186 per 1,000, 0% complete, live
- [upAPI, $99 monthly](https://datacircle.dev/company-technology-apis/upapi/99-monthly/llms.txt): $0.198 per 1,000, 23% 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://datakoot.com/guides/mcp-server-for-domain-and-dns-recon?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://datakoot.com/guides/pay-per-call-mcp-with-x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://datakoot.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://datakoot.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://datakoot.com/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://datakoot.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://x402.datakoot.com/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://x402.datakoot.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing