# AgentsTools, pay as you go: Phone validation API

> Phone-number intelligence in one call: validity and E.164 normalization, line type (mobile, fixed line, VOIP, toll free, premium rate), country and region, carrier hint, timezones, and a deterministic 0-100 fraud/KYC risk score with a band and reasons. Offline number-plan metadata from Google libphonenumber. Risk indicators only, not a definitive fraud verdict, no live status and no owner identity, the input number is not stored.

AgentsTools's x402 pay per call plan for the phone validation API costs $5.00 per 1,000 phones. AgentsTools's docs list 5 of the 9 fields on our checklist: Formats, Validity, Type, Carrier, Place.
We haven't run AgentsTools through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
We rank 1,184 plans for phone validation APIs by price. Half the plans cost $3.152 or less per 1,000 phones. This plan costs less per 1,000 phones than 41% of the 1,184 plans.
[GuGuData's CNY 124 (about $19) monthly plan](https://datacircle.dev/validate-phone-apis/gugudata/cny-124-monthly/llms.txt) is the cheapest paid plan per 1,000 phones. GuGuData's CNY 124 (about $19) monthly plan charges nothing per call. You get as many phones as GuGuData's rate limit allows. [Neutrino API's On-Demand plan](https://datacircle.dev/validate-phone-apis/neutrino-api/pay-as-you-go-on-demand/llms.txt) costs the least for 10,000 phones a month: $0.80.
[Trestle](https://datacircle.dev/validate-phone-apis/trestle/top-up-from-10-self-serve-pay-as-you-go-get-3-0-phone-intel-phone-validation-api/llms.txt), [Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt) and [Abstract API](https://datacircle.dev/validate-phone-apis/abstract-api/19-monthly-starter-5000-requests-month/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/agentstools/pay-as-you-go
- [Phone validation API: the best of 50+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://api.agentstools.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://api.agentstools.dev/phone/intel`
- API key: not needed
- Its API docs: https://api.agentstools.dev/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#/paid/phone_intel_phone_intel_get
- Sold by: AgentsTools (https://api.agentstools.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-08

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Phone-number intelligence in one call: validity and E.164 normalization, line type (mobile, fixed line, VOIP, toll free, premium rate), country and region, carrier hint, timezones, and a deterministic 0-100 fraud/KYC risk score with a band and reasons. Offline number-plan metadata from Google libphonenumber. Risk indicators only, not a definitive fraud verdict, no live status and no owner identity, the input number is not stored.

## Data

- What it checks: numbering plan
- 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: number. Optional: country, region
- Method: GET
- Path: /phone/intel

## 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 16 fields the plan's answer can hold

valid, possible, E.164 number, international format, national format, calling country code, region code, location, line type, carrier, timezones, risk score, risk band, reasons, signals, disclaimer

## AgentsTools's plans (1)

- [AgentsTools, pay as you go](https://datacircle.dev/validate-phone-apis/agentstools/pay-as-you-go/llms.txt): $5.00 per 1,000, 56% complete

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

- `GET /phone/intel`: [AgentsTools, pay as you go](https://datacircle.dev/validate-phone-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: phone validation API alternatives

- [CallerAPI, $25 monthly, Basic, GET /api/lookup/{phone}](https://datacircle.dev/validate-phone-apis/callerapi/25-monthly-basic-get-api-lookup-phone/llms.txt): $5.00 per 1,000, 78% complete, stored
- [ProWebLook, $250 pack, WhatsApp One-Time 50K, GET /wavalidation](https://datacircle.dev/validate-phone-apis/proweblook/250-pack-whatsapp-one-time-50k-get-wavalidation/llms.txt): $5.00 per 1,000, 67% complete, live
- [Azure Communication Services, pay as you go, Pay-as-you-go, POST /operatorInformation/:search, Phone Numbers - Operator Information Search, full](https://datacircle.dev/validate-phone-apis/azure-communication-services/pay-as-you-go-pay-as-you-go-post-operatorinformation-search-phone-numbers-operator-information-search-full/llms.txt): $5.00 per 1,000, 56% complete
- [Bird, top-up from $15](https://datacircle.dev/validate-phone-apis/bird/top-up-from-15/llms.txt): $5.00 per 1,000, 78% 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 2026-11-08.

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