Sandbox quick guide

Sandbox mode allows you to quickly develop and test the integration with onramp.

Refer the flow below for the user flow,

• After opening the sandbox link, enter the required amount.

  
• Make sure you are on the Mumbai polygon testnet, and enter your USDT-MATIC20 wallet address.

  
• Enter your phone number to receive OTP.

  
• Enter the received OTP and click verify.

  
• review the transaction details, and choose "Proceed to Pay" .

  
• The payment details are intentionally blurred out, as to avoid any accedental payments, the actual payment details are visible on production version of onrmap.

  
• Click on "I HAVE PAID" and proceed.

  
• This step emulates the average time taken usually to reconcile the transaction. Note: No user action is required in this step.

  
• Once the deposit is found, the swap of the desired crypto takes place, and the crypto is then sent to the onchain wallet address. Note: In sandbox the USDT is sent the mumbai polygon testnet.

  
• After successful screen is displayed once the has is generated, the user can now view the transaction using explore transaction section.

  
• On looking up the transaction History, the user can find all transactions placed by the user, the Partner/Merchant can get updates of the transaction via webhook or by polling them. Webhook updates Merchant Transaction History

  
• The user can review details for a specific transaction, the Partner/Merchant is able to perform similar function and detailed explanation can be found using: Webhook ->Response REST API -> Response

  

Adding Testnet to metamask

• For a single click add on, you can visit https://chainlist.org/

• Toggle the testnets and search for matic mumbai

• Connect your wallet and click on Add to wallet and approve.

  

Adding USDT to metamask

• Head over to your metamask extension and click on import tokens

  
• Add USDT MATIC-20 testnet contract address -> 0x5e3cb2a3e2c66882df2f0bdbee300327bb7e128c and click on add custom token, you should now be able to view the transactions sent over by the onramp sandbox.