WSAPI pricing: phone validation API, POST /users/check

Name: WSAPI phone validation API, POST /users/check
Brand: WSAPI

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11% complete: 1 of the 9 fields on our checklistSee the 9 fields

$0.00per 1,000 phonesWe haven't run WSAPI through our phone validation API benchmark yet.This plan is free. We rank 1,266 plans for phone validation APIs by price. Half the plans cost $3.55 or less per 1,000 phones. See the best free phone validation API plan.GuGuData's CNY 124 (about $19) monthly plan 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 costs the least for 10,000 phones a month: $0.80.Trestle, Data247 and Abstract API are the best phone validation API providers in the Datacircle benchmark.

Plan: Free Trial one of WSAPI's 8 plans

Call: POST /users/check one of WSAPI's 2 calls

API: Phone validation API WSAPI's only API

About this item

Live. WSAPI checks the phone number you send when you call the API.
1 of the 9 fields on our checklist. Number.
Nothing to pay. WSAPI limits how many results you get but gives no number.
One call. You send the X-Instance-Id header and phones to POST /users/check.
Who can get it: new users. Keep data: no limit. Use data: with conditions.

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

	This planWSAPI, free trial, POST /users/check	Foxentry, free trial, POST /phone/validate, Validate phone number (extended)	HLR Lookups, free, 100 free lookups, POST /hlr-lookups	HLR Lookup, free, 200 free credits, POST /batches/{id}/sourcejson, Bulk uploads via API	seven.io, free test credit, GET /api/lookup/hlr	WhatsScale, free
$ per 1,000 phones	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
Completeness	11%	56%	56%	89%	78%	22%
Billing	free	free	free	free	free	free
Pay	$0	$0	$0	$0	$0	$0
Enough for	not published	not published	100 results, once	200 results, once	not published	not published
Freshness	live	live	live	live	live	live
Who can get it	new users	anyone who signs up and creates an API project	new accounts	new accounts with a business email address	new accounts of traders: the customer assures that he is a trader and that the short messages are sent as part of his business	anyone aged 18 or over with a WhatsApp account on a phone they own or control

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.

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

Aggregators
Aggregators	none

Charges
Also pays for	136 other calls

Not found
$ per 1,000	$0.00

In their words
Their pitch	Check multiple phone numbers at once to see if they are registered on WhatsApp.

Data
Freshness	live
What it checks	messaging apps
Keep data	no limit
Use data	You agree not to use the Service to: Violate any applicable laws or regulations. Send unsolicited messages (spam), including bulk commercial messages. Harass, threaten, or abuse other individuals. Distribute malware, viruses, or other harmful software. Impersonate any person or entity, or falsely represent your affiliation with any person or entity. Interfere with or disrupt the integrity or performance of the Service. Attempt to gain unauthorized access to the Service or related systems. Violate WhatsApp's Terms of Service or any applicable third-party terms.

Plan
Pay	$0

Speed
Answer	in the call

About the plan
Plan	Free Trial
Who can get it	new users

The 3 fields the plan's answer can hold

phone number, registered on WhatsApp, JID