# agentsvc.io, pay as you go: Domain WHOIS API

> Domain registration lookup via RDAP (modern WHOIS).

agentsvc.io's domain WHOIS API on its Pay per call over x402 plan. It costs $4.50 per 1,000 domains. agentsvc.io's docs list 7 of the 9 fields on our checklist: Registrar, Created on, Updated on, Expires on, Name servers, Statuses, DNSSEC.
We haven't run agentsvc.io through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
Half of the 316 plans we rank by price cost $1.495 per 1,000 domains or less. This plan costs less per 1,000 domains than 14% of the 316 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.
[Robtex](https://datacircle.dev/domain-whois-apis/robtex/free/llms.txt), [DomScan](https://datacircle.dev/domain-whois-apis/domscan/6-monthly-starter-post-v1-whois-bulk/llms.txt) and [WhoisFreaks](https://datacircle.dev/domain-whois-apis/whoisfreaks/200-monthly-monthly-subscription-150000-api-credits-post-v2-0-bulkwhois-live/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/agentsvc-io/pay-as-you-go
- [Domain WHOIS API: the 13 best providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://agentsvc.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `POST https://agentsvc.io/api/v1/proxy/whois`
- API key: not needed
- Its API docs: https://agentsvc.io/services/whois?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: agentsvc.io (https://agentsvc.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 78%
- Registrar: ✓
- Created on: ✓
- Updated on: ✓
- Expires on: ✓
- Name servers: ✓
- Statuses: ✓
- DNSSEC: ✓

## Price

- $ per 1,000 domains: $4.50
- 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: Domain registration lookup via RDAP (modern WHOIS).

## Data

- Keep data: no limit
- Use data: Third-party data keeps its own license, attributions are named in the responses and in the site footer. You may use results in your own products. You may not resell access to the services themselves as a substitute for agentsvc.io. You must not: use the services for anything unlawful, including fraud, sanctions evasion, or violating other people's rights, send personal data of other people unless you have a legal basis to do so, read, crawl or monitor websites against their operators' rights or terms, or at a rate that harms them, attack, overload or probe our systems or use them to reach internal networks, or work around rate limits and payment, store unlawful content in agent-memory or agent-inbox, or use the inbox for spam.

## Plan

- Pay: per call
- You get: 1 request
- Enough for: 1 call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: POST
- Path: /api/v1/proxy/whois

## About the plan

- Plan: Pay per call over x402
- Who can get it: anyone with a wallet holding USDC on Base, Solana, Polygon or Arbitrum

## The 11 fields the plan's answer can hold

domain, registrar, registrar URL, status, created date, updated date, expiry date, days until expiry, name servers, DNSSEC, registrant country

## agentsvc.io's plans (7)

- [agentsvc.io, pay as you go](https://datacircle.dev/domain-whois-apis/agentsvc-io/pay-as-you-go/llms.txt): $4.50 per 1,000, 78% complete
- [agentsvc.io, $0.10 pack](https://datacircle.dev/domain-whois-apis/agentsvc-io/0-10-pack/llms.txt): $4.091 per 1,000, 78% complete
- [agentsvc.io, $1 pack](https://datacircle.dev/domain-whois-apis/agentsvc-io/1-pack/llms.txt): $4.091 per 1,000, 78% complete
- [agentsvc.io, $5 pack](https://datacircle.dev/domain-whois-apis/agentsvc-io/5-pack/llms.txt): $4.091 per 1,000, 78% complete
- [agentsvc.io, $20 pack](https://datacircle.dev/domain-whois-apis/agentsvc-io/20-pack/llms.txt): $4.091 per 1,000, 78% complete
- [agentsvc.io, $50 pack](https://datacircle.dev/domain-whois-apis/agentsvc-io/50-pack/llms.txt): $4.091 per 1,000, 78% complete
- [agentsvc.io, $100 pack](https://datacircle.dev/domain-whois-apis/agentsvc-io/100-pack/llms.txt): $4.091 per 1,000, 78% complete

## agentsvc.io's calls for this API (1)

- `POST /api/v1/proxy/whois`: [agentsvc.io, pay as you go](https://datacircle.dev/domain-whois-apis/agentsvc-io/pay-as-you-go/llms.txt)

## agentsvc.io's APIs (8)

- [agentsvc.io: email verification API pricing, 7 plans, POST /api/v1/proxy/email-verify](https://datacircle.dev/validate-email-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-email-verify/llms.txt)
- [agentsvc.io: email verification API pricing, 7 plans, POST /api/v1/proxy/email-validate](https://datacircle.dev/validate-email-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-email-validate/llms.txt)
- [agentsvc.io: news API pricing, 7 plans, POST /api/v1/proxy/crypto-news](https://datacircle.dev/news-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-crypto-news/llms.txt)
- [agentsvc.io: news API pricing, 7 plans, POST /api/v1/proxy/news-search](https://datacircle.dev/news-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-news-search/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/web-scrape](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-web-scrape/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/web-read-batch](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-web-read-batch/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/page-extract](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-page-extract/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/webpage-reader](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-webpage-reader/llms.txt)
- [agentsvc.io: web scraping API pricing, 7 plans, POST /api/v1/proxy/web-scrape-batch](https://datacircle.dev/web-scraping-apis/agentsvc-io/pay-as-you-go-pay-per-call-over-x402-post-api-v1-proxy-web-scrape-batch/llms.txt)
- [agentsvc.io: domain WHOIS API pricing, 7 plans](https://datacircle.dev/domain-whois-apis/agentsvc-io/pay-as-you-go/llms.txt)
- [agentsvc.io: phone validation API pricing, 7 plans](https://datacircle.dev/validate-phone-apis/agentsvc-io/pay-as-you-go/llms.txt)
- [agentsvc.io: business verification API pricing, 7 plans](https://datacircle.dev/business-verification-apis/agentsvc-io/pay-as-you-go/llms.txt)
- [agentsvc.io: tech stack API pricing, 7 plans](https://datacircle.dev/company-technology-apis/agentsvc-io/pay-as-you-go/llms.txt)
- [agentsvc.io: company enrichment API pricing, 7 plans](https://datacircle.dev/company-enrichment-apis/agentsvc-io/pay-as-you-go/llms.txt)

## agentsvc.io: domain WHOIS API alternatives

- [WhoisFreaks, $60 pack, 15,000 API Credits, GET /v2.0/whois/live](https://datacircle.dev/domain-whois-apis/whoisfreaks/60-pack-15000-api-credits-get-v2-0-whois-live/llms.txt): $4.00 per 1,000, 100% complete, live
- [JsonWhoisAPI, pay as you go, Next 500,000](https://datacircle.dev/domain-whois-apis/jsonwhoisapi/pay-as-you-go-next-500000/llms.txt): $4.00 per 1,000, 89% complete
- [WhoAPI, $4,990 yearly, Business yearly, GET /, Whois API](https://datacircle.dev/domain-whois-apis/whoapi/4990-yearly-business-yearly-get-whois-api/llms.txt): $4.158 per 1,000, 78% complete, 31 days
- [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
- [Call402, pay as you go](https://datacircle.dev/domain-whois-apis/call402/pay-as-you-go/llms.txt): $5.00 per 1,000, 56% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-05.

- https://agentsvc.io/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://agentsvc.io/credits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://agentsvc.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://agentsvc.io/llms-full.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://agentsvc.io/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://agentsvc.io/services/whois?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://agentsvc.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing