# Maytapi, free: WhatsApp number check API

> Find out which phone numbers are registered on WhatsApp before you message them. Send a list of numbers to one endpoint and get back which are valid — so your messages only go to people who can receive them.

Maytapi's Sandbox plan for the WhatsApp number check API costs $0.00 per 1,000 phones. We check each provider's docs for 6 fields. Maytapi's docs list 2: On WhatsApp, WhatsApp ID.
Maytapi limits how many results you get but gives no number.
We haven't run a WhatsApp number check API benchmark yet.
This plan is free. We rank 99 plans for WhatsApp number check APIs by price. Half the plans cost $3.20 or less per 1,000 phones.
[ZelNum's $500 pack](https://datacircle.dev/check-whatsapp-apis/zelnum/500-pack-pay-as-you-go-500-top-up-post-detect/llms.txt) costs the least per 1,000 phones: $0.043. [Wawp's €39 yearly plan](https://datacircle.dev/check-whatsapp-apis/wawp/39-yearly/llms.txt) costs the least for 10,000 phones a month: about $3.66.

- This page: https://datacircle.dev/check-whatsapp-apis/maytapi/free
- Get it: https://maytapi.com/whatsapp-api-pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Request: `POST https://api.maytapi.com/api/{product_id}/{phone_id}/checkPhones`
- API key: with the plan, on https://maytapi.com/whatsapp-api-pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Its API docs: https://maytapi.com/features/whatsapp-number-check-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Sold by: Maytapi (https://maytapi.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 33%
- On WhatsApp: ✓
- WhatsApp ID: ✓

## Price

- $ per 1,000 phones: $0.00
- Per: result
- Billing: free

## Charges

- Also pays for: 145 other Maytapi calls

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Find out which phone numbers are registered on WhatsApp before you message them. Send a list of numbers to one endpoint and get back which are valid — so your messages only go to people who can receive them.

## Data

- Freshness: live
- What it checks: messaging apps
- Keep data: no limit
- Use data: Also, you agree that you will not do any of the following in connection with the Service or other users: Use the Service in any manner that could interfere with, disrupt, negatively affect or inhibit other users from fully enjoying the Service or that could damage, disable, overburden or impair the functioning of the Service, Impersonate or post on behalf of any person or entity or otherwise misrepresent your affiliation with a person or entity, Collect any personal information about other users, or intimidate, threaten, stalk or otherwise harass other users of the Service, Create an account or post any content if you are not over 13 years of age, and Circumvent or attempt to circumvent any filtering, security measures, rate limits or other features designed to protect the Service, users of the Service, or third parties. [...] Unless we expressly state otherwise, your rights do not include: (i) publicly performing or publicly displaying the Service, (ii) modifying or otherwise making any derivative uses of the Service or any portion thereof, (iii) using any data mining, robots or similar data gathering or extraction methods, (iv) downloading (other than page caching) of any portion of the Service or any information contained therein, (v) reverse engineering or accessing the Service in order to build a competitive product or service, or (vi) using the Service other than for its intended purposes.

## Plan

- Pay: $0

## Speed

- Answer: in the call

## The call

- You send: product_id, phone_id, numbers
- Method: POST
- Path: /{phone_id}/checkPhones

## About the plan

- Plan: Sandbox
- Who can get it: anyone

## The 5 fields the plan's answer can hold

input, status, valid, WhatsApp ID, WhatsApp server

## Maytapi's plans (4)

- [Maytapi, free](https://datacircle.dev/check-whatsapp-apis/maytapi/free/llms.txt): $0.00 per 1,000, 33% complete, live
- [Maytapi, $29 monthly](https://datacircle.dev/check-whatsapp-apis/maytapi/29-monthly/llms.txt): no limit, 33% complete, live
- [Maytapi, $288 yearly](https://datacircle.dev/check-whatsapp-apis/maytapi/288-yearly/llms.txt): no limit, 33% complete, live
- [Maytapi, contact us](https://datacircle.dev/check-whatsapp-apis/maytapi/contact-us/llms.txt): 33% complete, live

## Maytapi's calls (1)

- `POST /{phone_id}/checkPhones`: [Maytapi, free](https://datacircle.dev/check-whatsapp-apis/maytapi/free/llms.txt)

## Maytapi's APIs (1)

- [Maytapi WhatsApp number check API pricing, 4 plans](https://datacircle.dev/check-whatsapp-apis/maytapi/free/llms.txt)

## Maytapi: WhatsApp number check API alternatives

[Maytapi alternatives: other WhatsApp number check API providers by price](https://datacircle.dev/maytapi-alternatives.txt)

We list other providers' plans closest to this plan in price per 1,000 phones. Each plan in the list gives live data.

- [ProWebLook, free signup credits, POST /wavalidation/batch](https://datacircle.dev/check-whatsapp-apis/proweblook/free-signup-credits-post-wavalidation-batch/llms.txt): $0.00 per 1,000, 67% complete, live
- [uazapi, free](https://datacircle.dev/check-whatsapp-apis/uazapi/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [Tamz, free](https://datacircle.dev/check-whatsapp-apis/tamz/free/llms.txt): $0.00 per 1,000, 33% complete, live
- [Nock, free](https://datacircle.dev/check-whatsapp-apis/nock/free/llms.txt): $0.00 per 1,000, 17% 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 2026-11-02.

- https://maytapi.com/features/whatsapp-number-check-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://maytapi.com/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://maytapi.com/llms-full.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://maytapi.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://maytapi.com/whatsapp-api-documentation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://maytapi.com/whatsapp-api-faq?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://maytapi.com/whatsapp-api-pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing