# AgentData, free, No account: Tech stack API

> One company: the tools it runs, company facts and signals [...]

AgentData's tech stack API on its No account plan. It costs $0.00 per 1,000 companies. It returns 6 of the 13 key fields we check: Technology, Categories, When and where seen, About, Size, Social.
In [our tech stack API benchmark](https://datacircle.dev/best-tech-stack-api.txt), AgentData's best plan scores 56.6 out of 100.
This plan is free. We rank 287 plans for tech stack APIs by price. Half the plans cost $9.98 per 1,000 companies or less.
[Botoi's $199 monthly plan](https://datacircle.dev/company-technology-apis/botoi/199-monthly/llms.txt) costs the least 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/agentdata/free-no-account
- [Tech stack API: find a company's technologies](https://datacircle.dev/best-tech-stack-api.txt)
- Get it: https://useagentdata.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Request: `GET https://agentdata.run/api/v1/lookup`
- API key: not needed
- Its API docs: https://agentdata.run/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Sold by: AgentData (https://useagentdata.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 46%
- Technology: ✓
- Categories: ✓
- When and where seen: ✓
- About: ✓
- Size: ✓
- Social: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Repeat free: 1 day
- Also pays for: from the same budget: Companies using a technology: the customer list for any product we track · Companies filtered by technology, sector and size · Find a company by name or domain · Technology changes: companies that started using a tool, newest first · The most used technologies, with company counts

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: One company: the tools it runs, company facts and signals [...]

## Data

- Freshness: stored
- Keep data: no limit
- Use data: Your account grants you a limited, non-exclusive, non-transferable licence to use the data within the scope of your plan for your own internal business purposes. Your plan lets your organisation use AgentData data in its own sales, marketing and research, including importing it into your own CRM and sales tools. You may not sell, license, publish or give the data, or lists made from it, to anyone outside your organisation, including your clients, unless we agree in writing. [...] You must not: Redistribute, resell, sublicense, or make available AgentData data to third parties, Build a competing database, product, or service using data obtained from AgentData, Systematically scrape, crawl, or extract data beyond your plan entitlements, Use AI assistants, scripts or multiple accounts to get around limits, including limits shared by the users of an AI assistant platform, Use data obtained from AgentData for spam, harassment, discrimination, or any unlawful purpose, Attempt to circumvent rate limits, gating mechanisms, or security controls, Use automated tools to access the service except through our official API, Use AgentData data to train, fine-tune, or develop machine learning or artificial intelligence models, Use data in any manner that violates applicable data protection laws, including the UK GDPR, EU GDPR, or CCPA [...]

## Plan

- Pay: $0
- You get: 50 results a day
- Enough for: 50 calls a day
- Expires: resets at midnight UTC

## Rate limit

- Per day: 50
- Per second: 2
- Batch: 1

## Speed

- Answer: in the call
- Median: 0.53 s

## The call

- You send: domain. Optional: min_confidence, verification_status
- Method: GET
- Path: /lookup

## About the plan

- Plan: No account
- Who can get it: anyone, no account or API key, limits counted per IP address

## The 24 fields the plan's answer can hold

domain, company name, description, sector, vertical, B2B or B2C, business model, sales motion, size, founded year, headquarters city, headquarters country, employee count, LinkedIn URL, MX provider, has pricing page, has API docs, has blog, has careers page, technologies, technology category, technology confidence, how we know, first seen

## AgentData's plans (5)

- [AgentData, free, No account](https://datacircle.dev/company-technology-apis/agentdata/free-no-account/llms.txt): $0.00 per 1,000, 46% complete, stored
- [AgentData, free, Account without a paid plan](https://datacircle.dev/company-technology-apis/agentdata/free-account-without-a-paid-plan/llms.txt): $0.00 per 1,000, 46% complete, stored
- [AgentData, $99 monthly](https://datacircle.dev/company-technology-apis/agentdata/99-monthly/llms.txt): $3.30 per 1,000, 46% complete, stored
- [AgentData, $299 monthly](https://datacircle.dev/company-technology-apis/agentdata/299-monthly/llms.txt): $1.993 per 1,000, 46% complete, stored
- [AgentData, contact us](https://datacircle.dev/company-technology-apis/agentdata/contact-us/llms.txt): 46% complete, stored

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

- `GET /lookup`: [AgentData, free, No account](https://datacircle.dev/company-technology-apis/agentdata/free-no-account/llms.txt)

## AgentData's APIs (5)

- [AgentData: company enrichment API pricing, 5 plans](https://datacircle.dev/company-enrichment-apis/agentdata/free-no-account/llms.txt)
- [AgentData: tech stack API pricing, 5 plans](https://datacircle.dev/company-technology-apis/agentdata/free-no-account/llms.txt)
- [AgentData: company discovery API pricing, 5 plans, GET /companies](https://datacircle.dev/company-discovery-apis/agentdata/free-no-account-get-companies/llms.txt)
- [AgentData: company discovery API pricing, 5 plans, GET /search](https://datacircle.dev/company-discovery-apis/agentdata/free-no-account-get-search/llms.txt)
- [AgentData: company discovery API pricing, 5 plans, GET /signals](https://datacircle.dev/company-discovery-apis/agentdata/free-no-account-get-signals/llms.txt)
- [AgentData: company discovery API pricing, 5 plans, GET /tech/{slug}](https://datacircle.dev/company-discovery-apis/agentdata/free-no-account-get-tech-slug/llms.txt)
- [AgentData: people search API pricing, 3 plans](https://datacircle.dev/people-search-apis/agentdata/99-monthly/llms.txt)
- [AgentData: people enrichment API pricing, 3 plans](https://datacircle.dev/person-enrichment-apis/agentdata/99-monthly/llms.txt)

## AgentData: tech stack API alternatives

- [The Companies API, $95 monthly](https://datacircle.dev/company-technology-apis/the-companies-api/95-monthly/llms.txt): $1.90 per 1,000, 69% complete, stored
- [StoreInspect, $2,388 yearly, Business, GET /stores/{domain}](https://datacircle.dev/company-technology-apis/storeinspect/2388-yearly-business-get-stores-domain/llms.txt): $1.99 per 1,000, 23% complete, stored
- [WhatCMS, $20 monthly, 10,000 Detections, GET /API/Tech](https://datacircle.dev/company-technology-apis/whatcms/20-monthly-10000-detections-get-api-tech/llms.txt): $2.00 per 1,000, 23% complete, stored
- [Tomba, $801 yearly](https://datacircle.dev/company-technology-apis/tomba/801-yearly/llms.txt): $2.225 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 2026-11-04.

- https://agentdata.run/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://agentdata.run/docs/mcp?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://agentdata.run/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://useagentdata.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://useagentdata.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://useagentdata.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing