NowPayments Extension (Crypto Payment Gateway)

Adnan_Ali1 · October 14, 2025, 10:16am

You can try It

Nowpayments

Extension component for NOWPayments crypto payment gateway. Accept 300+ cryptocurrencies in your app. Built with <3 and Rush.

Events

GotResponse

Event triggered when an API call succeeds

Parameters

Parameter	Type
method	text
response	text

ErrorResponse

Event triggered when an API call fails

Parameters

Parameter	Type
method	text
errorMessage	text

Methods

GetAPIStatus

Check the status of NOWPayments API

EstimatePrice

Estimate the amount of cryptocurrency for a given fiat amount

Parameters

Parameter	Type
amount	text
currencyFrom	text
currencyTo	text

GetCurrencies

Get list of supported currencies

GetMinimumPaymentAmount

Get minimum payment amount for a specific currency

Parameters

Parameter	Type
currency	text

CreatePayment

Create a new payment

Parameters

Parameter	Type
priceAmount	text
priceCurrency	text
payCurrency	text
orderId	text
orderDescription	text
ipnCallbackUrl	text
successUrl	text
cancelUrl	text

GetPaymentStatus

Get status of a payment by its ID

Parameters

Parameter	Type
paymentId	text

Properties

ApiKey

Get your NOWPayments API key

SandboxMode

Check if sandbox mode is enabled

ApiKey

Set your NOWPayments API key

ApiKey

Get your NOWPayments API key

SandboxMode

Enable or disable sandbox mode for testing

SandboxMode

Check if sandbox mode is enabled

76bc764ddf54942107ba0c0c9 · October 15, 2025, 4:52am

hi dear, can you share block images or a sample working aia

76bc764ddf54942107ba0c0c9 · October 15, 2025, 5:46pm

Are you there sir, kindly provide a aia how to setup.

Khan_Shoaib · October 16, 2025, 3:12pm

Hi there, do you have any tutorial video or sample aia.?

Khan_Shoaib · October 16, 2025, 3:15pm

I’m having trouble setting up this extension. Does anyone have an AIA file they can share?

Ibrahim_Jamar · October 16, 2025, 3:56pm

Instead of waiting for the owner to respond, why did you create a new thread

Khan_Shoaib · October 19, 2025, 9:17am

I contacted owner on whatsapp and he said he is very busy with other projects and can’t help. He told me to ask help from other developers, he also gave me java file of extension.
Nowpayments.java (17.7 KB)

Ibrahim_Jamar · October 19, 2025, 9:47am

Am trying to built using Fast CLI

@JEWEL project from rush can’t built in Fast?

Have a look in that text log

76bc764ddf54942107ba0c0c9 · October 20, 2025, 2:55pm

it worked?

Ibrahim_Jamar · October 20, 2025, 2:57pm

I released that i used wrong command fast built instead of fast build, i will recompile it again

76bc764ddf54942107ba0c0c9 · October 21, 2025, 5:23am

project for Fast
nowpayments.zip (49.4 KB)

76bc764ddf54942107ba0c0c9 · October 24, 2025, 3:37pm

any update ?

Ibrahim_Jamar · October 25, 2025, 8:01am

`🧩 Nowpayments`

An extension for MIT App Inventor 2.
Developed by ali using Fast.

Specifications

Package: com.ali.nowpayments
Size: 14.37 KB
Version: 1.0
Minimum API Level: 14
Updated On: 2025-10-25T07:00:00Z
Built & documented using: FAST v5.2.0

`Events:`

Nowpayments has total 4 events.

1. GotResponse

Event triggered when an API call succeeds

Parameter	Type
method	text
response	text

2. ErrorResponse

Event triggered when an API call fails

Parameter	Type
method	text
errorMessage	text

3. PaymentCreated

Event triggered when payment is created successfully

Parameter	Type
paymentId	text
paymentUrl	text

4. PaymentStatusChanged

Event triggered when payment status changes

Parameter	Type
paymentId	text
status	text

`Methods:`

Nowpayments has total 15 methods.

1. GetAPIStatus

Check the status of NOWPayments API

2. EstimatePrice

Estimate the amount of cryptocurrency for a given fiat amount

Parameter	Type
amount	text
currencyFrom	text
currencyTo	text

3. GetCurrencies

Get list of supported currencies

4. GetMinimumPaymentAmount

Get minimum payment amount for specific currencies

Parameter	Type
currencyFrom	text
currencyTo	text

5. CreatePayment

Create a new payment

Parameter	Type
priceAmount	text
priceCurrency	text
payCurrency	text
orderId	text

6. GetPaymentStatus

Get status of a payment by its ID

Parameter	Type
paymentId	text

7. CreateInvoice

Create an invoice for payment

Parameter	Type
priceAmount	text
priceCurrency	text
payCurrency	text
orderId	text

8. CreateOffSitePayment

Create payment with off-site checkout (redirect URL)

Parameter	Type
priceAmount	text
priceCurrency	text
payCurrency	text
orderId	text

9. GetPaymentHistory

Get payment history with pagination

Parameter	Type
limit	text
offset	text

10. GetBalance

Check account balance

11. GetPaymentMethods

Get list of available payment methods

12. GetExchangeRates

Get exchange rates for all supported currencies

13. IsCurrencySupported

Validate if a cryptocurrency is supported

Parameter	Type
currencyCode	text

14. CreateWithdrawal

Create a withdrawal request

Parameter	Type
currency	text
amount	text
address	text

15. GetWithdrawalHistory

Get withdrawal history

`Setters:`

Nowpayments has total 8 setter properties.

1. ApiKey

Set your NOWPayments API key

Input type: text

2. SandboxMode

Enable or disable sandbox mode for testing

Input type: boolean

3. SuccessUrl

Payment success URL

Input type: text

4. CancelUrl

Payment cancel URL

Input type: text

5. IpnCallbackUrl

IPN callback URL

Input type: text

6. CustomerEmail

Customer email for payment

Input type: text

7. CustomerName

Customer name for payment

Input type: text

8. OrderDescription

Order description

Input type: text

`Getters:`

Nowpayments has total 8 getter properties.

1. ApiKey

Set your NOWPayments API key

Return type: text

2. SandboxMode

Enable or disable sandbox mode for testing

Return type: boolean

3. SuccessUrl

Payment success URL

Return type: text

4. CancelUrl

Payment cancel URL

Return type: text

5. IpnCallbackUrl

IPN callback URL

Return type: text

6. CustomerEmail

Customer email for payment

Return type: text

7. CustomerName

Customer name for payment

Return type: text

8. OrderDescription

Order description

Return type: text

Note

I just compiled this aix i don’t own it

For more info ask @Adnan_Ali1 as the owner of the code provided

DOWNLOAD BELOW

com.ali.nowpayments.aix (14.4 KB)

Md_shadikul_islam · November 7, 2025, 8:39am

** Thanks for the update. I understand the owner is busy. I’ll try to work with the Java file you shared and reach out to other developers if needed. Appreciate your help!

Adnan_Ali1 · November 8, 2025, 5:58am

How to Use Nowpayments Extension

Add the Nowpayments extension to your project

Import the Nowpayments extension aix file into your Kodular project

In Screen Initialization Blocks:

When Screen.Initialize:
    Set Nowpayments1.ApiKey to "YOUR_NOWPAYMENTS_API_KEY"
    Set Nowpayments1.SandboxMode to true  // Use false for production
    Set Nowpayments1.CustomerEmail to "customer@example.com"
    Set Nowpayments1.CustomerName to "Customer Name"
    Set Nowpayments1.OrderDescription to "Product Description"
    Set Nowpayments1.SuccessUrl to "https://yoursite.com/success"
    Set Nowpayments1.CancelUrl to "https://yoursite.com/cancel"
    Set Nowpayments1.IpnCallbackUrl to "https://yoursite.com/ipn"

Basic Payment Flow

Check API Status:

When ButtonCheckAPI.Click:
    Call Nowpayments1.GetAPIStatus

Create a Payment:

When ButtonPay.Click:
    Call Nowpayments1.CreatePayment with priceAmount "100", priceCurrency "USD", payCurrency "BTC", orderId "ORDER123"

Essential Blocks

Properties to Set

ApiKey: Your NOWPayments API key from the dashboard
SandboxMode: Enable/disable test mode
CustomerEmail: Customer’s email address
CustomerName: Customer’s name
OrderDescription: Description of the product/service
SuccessUrl: URL to redirect after successful payment
CancelUrl: URL to redirect if payment is cancelled
IpnCallbackUrl: Instant Payment Notification URL

Key Methods

GetAPIStatus: Check if NOWPayments API is working
CreatePayment: Create a new payment request
GetPaymentStatus: Check status of a payment
GetCurrencies: Get list of supported cryptocurrencies
EstimatePrice: Estimate crypto amount for a fiat value
GetBalance: Check your account balance

Important Events

GotResponse: Triggered when an API call succeeds
ErrorResponse: Triggered when an API call fails
PaymentCreated: Triggered when a payment is created successfully
PaymentStatusChanged: Triggered when payment status updates

Sample Implementation

Screen Initialization Blocks

When Screen.Initialize:
    Set Nowpayments1.ApiKey to "YOUR_NOWPAYMENTS_API_KEY"
    Set Nowpayments1.SandboxMode to true
    Set Nowpayments1.CustomerEmail to "customer@example.com"
    Set Nowpayments1.CustomerName to "Customer Name"
    Set Nowpayments1.OrderDescription to "Premium Subscription"
    Set Nowpayments1.SuccessUrl to "https://yoursite.com/payment-success"
    Set Nowpayments1.CancelUrl to "https://yoursite.com/payment-cancel"

Creating a Payment

When ButtonBuy.Click:
    Call Nowpayments1.CreatePayment with priceAmount "50", priceCurrency "USD", payCurrency "BTC", orderId "PREMIUM123"

When Nowpayments1.PaymentCreated(paymentId, paymentUrl):
    Open paymentUrl in Browser
    
When Nowpayments1.ErrorResponse(method, errorMessage):
    Show alert with message "Payment Error: " & errorMessage

Notes

This extension requires internet permission
For production use, disable SandboxMode
All API calls are asynchronous, handle responses in events
Make sure to set your API key before making any API calls
Sandbox mode uses test API endpoint for testing without real transactions

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NowPayments Extension (Crypto Payment Gateway)

Nowpayments

Events

GotResponse

ErrorResponse

Methods

GetAPIStatus

EstimatePrice

GetCurrencies

GetMinimumPaymentAmount

CreatePayment

GetPaymentStatus

Properties

ApiKey

SandboxMode

ApiKey

ApiKey

SandboxMode

SandboxMode

🧩 Nowpayments

Specifications

Events:

1. GotResponse

2. ErrorResponse

3. PaymentCreated

4. PaymentStatusChanged

Methods:

1. GetAPIStatus

2. EstimatePrice

3. GetCurrencies

4. GetMinimumPaymentAmount

5. CreatePayment

6. GetPaymentStatus

7. CreateInvoice

8. CreateOffSitePayment

9. GetPaymentHistory

10. GetBalance

11. GetPaymentMethods

12. GetExchangeRates

13. IsCurrencySupported

14. CreateWithdrawal

15. GetWithdrawalHistory

Setters:

1. ApiKey

2. SandboxMode

3. SuccessUrl

4. CancelUrl

5. IpnCallbackUrl

6. CustomerEmail

7. CustomerName

8. OrderDescription

Getters:

1. ApiKey

2. SandboxMode

3. SuccessUrl

4. CancelUrl

5. IpnCallbackUrl

6. CustomerEmail

7. CustomerName

8. OrderDescription

Note

DOWNLOAD BELOW

How to Use Nowpayments Extension

Add the Nowpayments extension to your project

In Screen Initialization Blocks:

Basic Payment Flow

Essential Blocks

Properties to Set

Key Methods

Important Events

Sample Implementation

Screen Initialization Blocks

Creating a Payment

Notes

Related topics

`🧩 Nowpayments`

`Events:`

`Methods:`

`Setters:`

`Getters:`