# AgentsTools, pay as you go: Domain WHOIS API

> Enrich a domain / company / email into one aggregated profile from public sources: registration (RDAP/WHOIS age, registrar, expiry, nameservers), DNS (A/AAAA/MX/NS, SPF, DMARC), TLS certificate (issuer, validity, expiry), homepage metadata (title, description, Open Graph, JSON-LD Organization, social links, role contacts) and a tech-stack detection. Each block is null-on-failure (partial, never 500). Business/domain data only — no personal data of individuals.

AgentsTools's x402 pay per call plan for the domain WHOIS API costs $15.00 per 1,000 domains. AgentsTools's docs list 5 of the 9 fields on our checklist: Registrar, Created on, Expires on, Name servers, Statuses.
We haven't run AgentsTools through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
We rank 363 plans for domain WHOIS APIs by price. Half the plans cost $1.50 or less per 1,000 domains. This plan costs less per 1,000 domains than 3% of the 363 plans.
[Searchwire's $10 pack](https://datacircle.dev/domain-whois-apis/searchwire/10-pack/llms.txt) is the cheapest paid plan per 1,000 domains. Searchwire's domain WHOIS API costs nothing beyond the plan price. [C99.nl's $25 yearly plan](https://datacircle.dev/domain-whois-apis/c99-nl/25-yearly/llms.txt) costs the least for 10,000 domains a month: $2.08.
[Enterno](https://datacircle.dev/domain-whois-apis/enterno/free-open-api/llms.txt), [IPAddress.to](https://datacircle.dev/domain-whois-apis/ipaddress-to/free/llms.txt) and [Robtex](https://datacircle.dev/domain-whois-apis/robtex/free/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/agentstools/pay-as-you-go
- [Domain WHOIS API: the 19 best of 70+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://api.agentstools.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://api.agentstools.dev/enrich/domain`
- API key: not needed
- Its API docs: https://api.agentstools.dev/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#/paid/enrich_domain_enrich_domain_get
- Sold by: AgentsTools (https://api.agentstools.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 56%
- Registrar: ✓
- Created on: ✓
- Expires on: ✓
- Name servers: ✓
- Statuses: ✓

## Price

- $ per 1,000 domains: $15.00
- Per: call
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Enrich a domain / company / email into one aggregated profile from public sources: registration (RDAP/WHOIS age, registrar, expiry, nameservers), DNS (A/AAAA/MX/NS, SPF, DMARC), TLS certificate (issuer, validity, expiry), homepage metadata (title, description, Open Graph, JSON-LD Organization, social links, role contacts) and a tech-stack detection. Each block is null-on-failure (partial, never 500). Business/domain data only — no personal data of individuals.

## 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: one of domain, url or email. Optional: include
- Method: GET
- Path: /enrich/domain

## About the plan

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

## The 8 fields the plan's answer can hold

domain, registered, created date, domain age, expiry date, registrar, statuses, nameservers

## AgentsTools's plans (1)

- [AgentsTools, pay as you go](https://datacircle.dev/domain-whois-apis/agentstools/pay-as-you-go/llms.txt): $15.00 per 1,000, 56% complete

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

- `GET /enrich/domain`: [AgentsTools, pay as you go](https://datacircle.dev/domain-whois-apis/agentstools/pay-as-you-go/llms.txt)

## AgentsTools's APIs (8)

- [AgentsTools: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: web search API pricing, 1 plan](https://datacircle.dev/web-search-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: GitHub repository API pricing, 1 plan](https://datacircle.dev/github-repository-apis/agentstools/pay-as-you-go/llms.txt)
- [AgentsTools: news API pricing, 1 plan, GET /crypto/news](https://datacircle.dev/news-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-crypto-news/llms.txt)
- [AgentsTools: news API pricing, 1 plan, GET /gdelt/news](https://datacircle.dev/news-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-gdelt-news/llms.txt)
- [AgentsTools: news API pricing, 1 plan, GET /search/news](https://datacircle.dev/news-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-search-news/llms.txt)
- [AgentsTools: web scraping API pricing, 1 plan, GET /extract](https://datacircle.dev/web-scraping-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-extract/llms.txt)
- [AgentsTools: web scraping API pricing, 1 plan, GET /structured](https://datacircle.dev/web-scraping-apis/agentstools/pay-as-you-go-x402-pay-per-call-get-structured/llms.txt)

## AgentsTools: domain WHOIS API alternatives

- [Unstuckapi, $50 pack](https://datacircle.dev/domain-whois-apis/unstuckapi/50-pack/llms.txt): $10.00 per 1,000, 78% complete
- [Suprsonic, $29 monthly](https://datacircle.dev/domain-whois-apis/suprsonic/29-monthly/llms.txt): $14.50 per 1,000, 78% complete
- [ViewDNS.info, $299 pack](https://datacircle.dev/domain-whois-apis/viewdns-info/299-pack/llms.txt): $14.95 per 1,000, 89% complete, live
- [Whoxy, $75 pack, Package #1](https://datacircle.dev/domain-whois-apis/whoxy/75-pack-package-1/llms.txt): $15.00 per 1,000, 78% 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 2026-11-08.

- https://api.agentstools.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.agentstools.dev/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.agentstools.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing