# Agent Data Workers, pay as you go: Domain WHOIS API

> RDAP/WHOIS, domain age, DNS, SPF/DMARC, SSL and phishing risk flags.

Agent Data Workers's x402 pay per call plan for the domain WHOIS API costs $5.00 per 1,000 domains. We check each provider's docs for 9 fields. Agent Data Workers's docs list 4: Registrar, Created on, Expires on, Name servers.
We haven't run Agent Data Workers through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
We rank 495 plans for domain WHOIS APIs by price. Half the plans cost $1.575 or less per 1,000 domains. This plan costs less per 1,000 domains than 18% of the 495 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.
[WhoisJSON](https://datacircle.dev/domain-whois-apis/whoisjson/120-monthly/llms.txt), [Enterno](https://datacircle.dev/domain-whois-apis/enterno/free-open-api/llms.txt) and [IPAddress.to](https://datacircle.dev/domain-whois-apis/ipaddress-to/free/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/agent-data-workers/pay-as-you-go
- [Domain WHOIS API in 2026: the best of 20+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://api.agent-data.workers.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://api.agent-data.workers.dev/api/v1/domain`
- API key: not needed
- Its API docs: https://api.agent-data.workers.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#/paths/~1api~1v1~1domain
- Sold by: Agent Data Workers (https://api.agent-data.workers.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-09

## In the answer

- Completeness: 44%
- Registrar: ✓
- Created on: ✓
- Expires on: ✓
- Name servers: ✓

## Price

- $ per 1,000 domains: $5.00
- Per: call
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: RDAP/WHOIS, domain age, DNS, SPF/DMARC, SSL and phishing risk flags.

## Data

- Freshness: 1 hour
- 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: name
- Method: GET
- Path: /api/v1/domain

## About the plan

- Plan: x402 pay per call
- Who can get it: anyone with a wallet paying USDC on Base or Solana, or USDT on Solana (x402 v2), with no account or API key

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

domain, registrar, creation date, expiry date, domain age, A records, AAAA records, MX records, NS records, TXT records, SPF, DMARC, SSL valid, SSL days left, risk flags, risk level

## Agent Data Workers's plans (1)

- [Agent Data Workers, pay as you go](https://datacircle.dev/domain-whois-apis/agent-data-workers/pay-as-you-go/llms.txt): $5.00 per 1,000, 44% complete, 1 hour

## Agent Data Workers's calls for this API (1)

- `GET /api/v1/domain`: [Agent Data Workers, pay as you go](https://datacircle.dev/domain-whois-apis/agent-data-workers/pay-as-you-go/llms.txt)

## Agent Data Workers's APIs (6)

- [Agent Data Workers: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/agent-data-workers/pay-as-you-go/llms.txt)
- [Agent Data Workers: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/agent-data-workers/pay-as-you-go/llms.txt)
- [Agent Data Workers: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/agent-data-workers/pay-as-you-go/llms.txt)
- [Agent Data Workers: news API pricing, 1 plan](https://datacircle.dev/news-apis/agent-data-workers/pay-as-you-go/llms.txt)
- [Agent Data Workers: web scraping API pricing, 1 plan](https://datacircle.dev/web-scraping-apis/agent-data-workers/pay-as-you-go/llms.txt)
- [Agent Data Workers: web search API pricing, 1 plan](https://datacircle.dev/web-search-apis/agent-data-workers/pay-as-you-go/llms.txt)

## Agent Data Workers: domain WHOIS API alternatives

- [How.is, pay as you go](https://datacircle.dev/domain-whois-apis/how-is/pay-as-you-go/llms.txt): $5.00 per 1,000, 56% complete, live
- [fetcher.cloud, pay as you go](https://datacircle.dev/domain-whois-apis/fetcher-cloud/pay-as-you-go/llms.txt): $5.00 per 1,000, 44% complete, live
- [DomainRef, pay as you go, Pay per call, GET /v1/domain/age](https://datacircle.dev/domain-whois-apis/domainref/pay-as-you-go-pay-per-call-get-v1-domain-age/llms.txt): $5.00 per 1,000, 78% complete, live
- [Genexxis, pay as you go, x402 pay per call, GET /domain-info](https://datacircle.dev/domain-whois-apis/genexxis/pay-as-you-go-x402-pay-per-call-get-domain-info/llms.txt): $5.00 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 2026-11-09.

- https://api.agent-data.workers.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.agent-data.workers.dev/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.agent-data.workers.dev/api/v1/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.agent-data.workers.dev/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.agent-data.workers.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing