Fund wallets during testing

See which sandbox wallets a public test-network faucet can fund, and why EVM sandbox wallets show a sandbox test dollar instead.

This page shows how to put test funds on a sandbox wallet. Sandbox wallets are test-network wallets, and how you fund one depends on its network.

Example. You create a sandbox Stellar wallet for Ada and send it 10 test-network USDC from a public faucet. Her wallet then shows a USDC balance of 10.0000000. A sandbox Polygon wallet would still show 0, because faucet USDC does not count on that network.

Network	How to fund it in sandbox
`stellar`, `solana`	A public USDC faucet for that test network. These are real test-network wallets
`polygon`, `ethereum`, `avalanche`	You cannot fund these with a faucet. On these networks the `USDC` balance of a sandbox wallet is the sandbox test dollar, a test token that stands for US dollars. USDC from a public faucet does not show

The API has no way today to add sandbox test dollars to a standalone EVM wallet. To test money arriving in an account, use a simulated deposit on a v2 account.

Fund a Stellar or Solana wallet

Read the wallet's address and network with Get a single wallet:

curl --request GET \
     --url https://api.gravv.xyz/v1/wallets/30803889-fa61-4774-8d11-8e3781728a07 \
     --header 'Api-Key: <API_KEY>'

Open a public USDC faucet for the Stellar or Solana test network, and send USDC to the address.
Wait for inflow.onchain.completed, then read the wallet again for the balance.

A Stellar wallet already holds its USDC trustline a few seconds after Gravv creates it. A new Solana wallet lists only SOL until the first USDC arrives.

Do not send main-network coins to a sandbox address. You lose them.