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SMS verification infrastructure

SMS verification built to professional standards.

Buy virtual numbers in more than 190 countries and receive verification codes in seconds. A complete dashboard, a documented REST API and automatic refunds when the SMS does not arrive.

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190+countries with numbers available
REST APIdocumented, with idempotency
5 languageswith prices in local currency
Refundautomatic if the SMS does not arrive
Dashboard

Complete management in a single dashboard

See your balance, buy a number, follow the SMS wait and copy the code as soon as it arrives. No SIM card, no personal number exposed.

Features

SMS verification infrastructure

Virtual numbers in 190+ countries, REST API, multiple payment methods and support in 5 languages.

190+ countries

Pick the country and service and buy a virtual number to receive the verification SMS.

REST API

Automate purchases and code reading over HTTP, with idempotency and full documentation.

5 languages and currencies

Portuguese, English, German, Spanish and French, with prices in the language’s currency.

Flexible top-up

Add balance with PIX, credit card or cryptocurrencies.

Automatic refund

If the SMS doesn’t arrive in time, the amount goes back to your balance.

Telegram bot

Prefer your phone? Also use the KDEFY SMS bot on Telegram.

Payment

Top up your balance and pay only for what you use

Three payment methods, with automatic confirmation.

PIX

PIX

Instant payment in Brazilian reais.

Credit card

Secure payment processed by Stripe.

Cryptocurrencies

Choose the coin at checkout and pay on-chain.

Loyalty

Top up more, pay less per number

Three automatic discount levels, on the website and in the API. No contract and no approval: just top up.

Level 0

Standard price

—

Level 1

−20%

20% off the service fee

$10.97 in a single top-up per week

Level 2

−40%

40% off the service fee

$36.57 in a single top-up per week

$914.24 in total top-ups · permanent

Level 3

−60%

60% off the service fee

$109.71 in a single top-up per week

$2,742.73 in total top-ups · permanent

Weekly levels count a single top-up: adding up small top-ups during the week does not count. If the goal is reached with one top-up, the level continues the following week.

Goals are set in Brazilian reais (R$); other currencies are converted at the day’s rate.

Create account and startSee how it works
For developers

Integrate through the REST API

Buy numbers, receive codes and check balance with simple HTTP calls. Ready-made examples in cURL, Node.js, Python, PHP, Ruby and Shell.

View API documentation
curl "https://kdefy-sms.com/api/v1/number/get?country=73&service=wa" \
  -H "X-API-Key: $KDEFY_API_KEY"

{ "status": "success",
  "phone": "5511999999999",
  "state": "waiting" }

Also on Telegram

Buy numbers and receive codes right in the @SmsKdefyBot bot.

Open the bot
HOW IT WORKS

From sign-up to SMS in 4 steps

A straightforward flow designed so you can get it all done in a few clicks.

1

Create your account

Sign up in moments and open your dashboard.

2

Add balance

Top up via PIX and follow the payment confirmation.

3

Choose the number

Select the country and the service and buy with your available balance.

4

Receive the SMS

The code shows up in your activation, right in the dashboard.

Frequently asked questions

What is a virtual number?

A temporary phone number used to receive SMS, such as verification codes, without needing a SIM card or your personal number.

How do I add balance?

In the Wallet you generate a PIX payment. As soon as it is confirmed, your balance is updated in the dashboard.

Where do I see the received SMS?

On the Activations page. The code appears there as soon as the SMS arrives.

Are my purchases recorded?

Yes. Purchases, activations and transactions are saved in your financial history.

Which payment methods does KDEFY SMS accept?

You top up your balance with PIX, credit card (via Stripe) or cryptocurrencies.

Does KDEFY SMS have an API?

Yes. The REST API lets you buy numbers, receive SMS and check balance, with documentation and examples in several languages.

Can I use it on Telegram?

Yes. Besides the website, there is the @SmsKdefyBot bot on Telegram.

How does the loyalty program work?

When you top up a level’s goal amount in a single payment, you get a discount on the service fee. Small top-ups made during the week are not added together. Details are on the program page.

Ready to get started

Create your account and start receiving SMS today.

Web dashboard, REST API and Telegram bot, with support in 5 languages.

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Contact our teamQuestions, support or partnerships:support@kdefy-sms.com