# agentsvc.io, pay as you go: Phone validation API

> Parse and validate any phone number worldwide using libphonenumber.

agentsvc.io's phone validation API on its Pay per call over x402 plan. It costs $4.50 per 1,000 phones. It returns 5 of the 9 key fields we check: Number, Formats, Validity, Type, Place.
We haven't run agentsvc.io through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
Half of the 935 plans we rank by price cost $3.96 per 1,000 phones or less. This plan costs less per 1,000 phones than 47% of the 935 plans.
[Botoi's $199 monthly plan](https://datacircle.dev/validate-phone-apis/botoi/199-monthly/llms.txt) is the cheapest paid plan per 1,000 phones: as little as $0.0066. Botoi's $199 monthly plan covers up to 1,000,000 phones a day.
[Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt), [Abstract API](https://datacircle.dev/validate-phone-apis/abstract-api/19-monthly-starter-5000-requests-month/llms.txt) and [Foxentry](https://datacircle.dev/validate-phone-apis/foxentry/top-up-pay-as-you-go-post-phone-validate-validate-phone-number-extended/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/agentsvc-io/pay-as-you-go
- [Phone validation API: the best of 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://agentsvc.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://agentsvc.io/api/v1/proxy/phone-validate`
- API key: not needed
- Its API docs: https://agentsvc.io/services/phone-validate?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: agentsvc.io (https://agentsvc.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 56%
- Number: ✓
- Formats: ✓
- Validity: ✓
- Type: ✓
- Place: ✓

## Price

- $ per 1,000 phones: $4.50
- Per: call
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Parse and validate any phone number worldwide using libphonenumber.

## Data

- Countries: Worldwide
- What it checks: numbering plan
- 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: phone. Optional: country_code
- Method: POST
- Path: /api/v1/proxy/phone-validate

## 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 9 fields the plan's answer can hold

phone, valid, possible, E.164 number, national format, international format, country code, country calling code, line type

## agentsvc.io's plans (7)

- [agentsvc.io, pay as you go](https://datacircle.dev/validate-phone-apis/agentsvc-io/pay-as-you-go/llms.txt): $4.50 per 1,000, 56% complete
- [agentsvc.io, $0.10 pack](https://datacircle.dev/validate-phone-apis/agentsvc-io/0-10-pack/llms.txt): $4.091 per 1,000, 56% complete
- [agentsvc.io, $1 pack](https://datacircle.dev/validate-phone-apis/agentsvc-io/1-pack/llms.txt): $4.091 per 1,000, 56% complete
- [agentsvc.io, $5 pack](https://datacircle.dev/validate-phone-apis/agentsvc-io/5-pack/llms.txt): $4.091 per 1,000, 56% complete
- [agentsvc.io, $20 pack](https://datacircle.dev/validate-phone-apis/agentsvc-io/20-pack/llms.txt): $4.091 per 1,000, 56% complete
- [agentsvc.io, $50 pack](https://datacircle.dev/validate-phone-apis/agentsvc-io/50-pack/llms.txt): $4.091 per 1,000, 56% complete
- [agentsvc.io, $100 pack](https://datacircle.dev/validate-phone-apis/agentsvc-io/100-pack/llms.txt): $4.091 per 1,000, 56% complete

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

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

## agentsvc.io's APIs (7)

- [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: 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: phone validation API alternatives

- [HLR Lookups, top-up from €10,000, 2.5M - 5M, POST /mnp-lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/top-up-from-10000-2-5m-5m-post-mnp-lookups/llms.txt): $4.501 per 1,000, 44% complete, live
- [VerificarEmails, €20 pack, Syntax: 5,000 Phones, GET /phonesyntactic/validate/single](https://datacircle.dev/validate-phone-apis/verificaremails/20-pack-syntax-5000-phones-get-phonesyntactic-validate-single/llms.txt): $4.501 per 1,000, 67% complete, stored
- [GatewayAPI, top-up](https://datacircle.dev/validate-phone-apis/gatewayapi/top-up/llms.txt): $4.501 per 1,000, 33% complete, live
- [HLR Lookup, £680 pack, 200,000 lookups, POST /batches/{id}/sourcejson, Bulk uploads via API](https://datacircle.dev/validate-phone-apis/hlr-lookup/680-pack-200000-lookups-post-batches-id-sourcejson/llms.txt): $4.534 per 1,000, 89% 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 2026-11-05.

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