# Ful.io, $199 monthly: Company technology API

> Look up the technology stack of any website and check your subscription usage through a simple, authenticated REST API.

Ful.io's company technology API on its Professional plan, $99.50 per 1,000 companies. 6 of the 13 key fields: Technology, Categories, About, Places, Contact, Social.
The median plan costs $15.432 per 1,000. This plan costs less than 14% of the 95 priced plans.

- This page: https://datacircle.dev/company-technology-apis/ful-io/199-monthly
- Get it: https://ful.io/pricing
- Its API docs: https://ful.io/documentation/api#technology-lookup
- Sold by: Ful.io (https://ful.io)
- Checked: 2026-10-20

## In the answer

- Completeness: 46%
- Technology: ✓
- Categories: ✓
- About: ✓
- Places: ✓
- Contact: ✓
- Social: ✓

## Price

- $ per 1,000: $99.50
- Billing: monthly
- $ a month: $199

## Aggregators

- Aggregators: none

## Charges

- Per: call
- Also pays for: Technology reports (5 a month)

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Look up the technology stack of any website and check your subscription usage through a simple, authenticated REST API.

## Data

- Keep data: no limit
- Use data: When using our Services, you agree not to: Reproduce, distribute, or resell any content from our Services without prior written consent. Use automated methods to extract data or disrupt the Services. Engage in any unlawful, harmful, or fraudulent activities. Use our Services to transmit spam, malware, or other harmful content. [...] Ful.io may establish limits on usage, such as the number of API requests you can make. Attempts to circumvent these limitations may result in the termination of access.

## Plan

- Pay: $199
- You get: 2,000 credits a month
- Enough for: 2,000 calls a month
- Expires: reset at the start of each billing period

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: GET
- Path: /api/domain-search

## About the plan

- Plan: Professional
- Who can get it: anyone

## The 16 fields the plan's answer can hold

domain, title, meta description, social profiles, domain established date, technologies, technology category, technology description, technology icon, technology website, technology slug, country, region, industry, emails, email count

## Ful.io's plans (5)

- [Ful.io, $199 monthly](https://datacircle.dev/company-technology-apis/ful-io/199-monthly/llms.txt): $99.50 per 1,000, 46% complete
- [Ful.io, $399 monthly](https://datacircle.dev/company-technology-apis/ful-io/399-monthly/llms.txt): $19.95 per 1,000, 46% complete
- [Ful.io, $1,990 yearly](https://datacircle.dev/company-technology-apis/ful-io/1990-yearly/llms.txt): $82.917 per 1,000, 46% complete
- [Ful.io, $3,990 yearly](https://datacircle.dev/company-technology-apis/ful-io/3990-yearly/llms.txt): $16.625 per 1,000, 46% complete
- [Ful.io, contact us](https://datacircle.dev/company-technology-apis/ful-io/contact-us/llms.txt): 46% complete

## Ful.io's calls (1)

- `GET /api/domain-search`: [Ful.io, $199 monthly](https://datacircle.dev/company-technology-apis/ful-io/199-monthly/llms.txt)

## Similar plans of other providers

- [TechnologyChecker, $89 monthly, Pro, GET /v1/technology-lookup-live](https://datacircle.dev/company-technology-apis/technologychecker/89-monthly-pro-get-v1-technology-lookup-live/llms.txt): $44.50 per 1,000, 23% complete, live
- [Findymail, $49 monthly](https://datacircle.dev/company-technology-apis/findymail/49-monthly/llms.txt): $49.00 per 1,000, 23% complete
- [TheirStack, $49 monthly](https://datacircle.dev/company-technology-apis/theirstack/49-monthly/llms.txt): $98.00 per 1,000, 23% complete, 1 day
- [BuiltWith, $2,950 yearly](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 2026-10-20.

- https://ful.io/documentation/api
- https://ful.io/faq
- https://ful.io/pricing
- https://ful.io/terms