Server Wallets

To get started, create a developer account in the Crossmint Staging Console. Open that link, sign in, and accept the dialog to continue.

Then, navigate to project Settings > General:

• For EVM chains: Set the wallet type to “Smart Wallets”
• For all other chains: Set the wallet type to “Custodial Wallets”

Create a server-side API key with these scopes:

This allows your API key to perform any kind of wallet action.

Below is a summary of available wallet types and their characteristics:

Create a file (e.g. createWallet.ts) and enter this code:

Before running it, be sure to fill in:

• YOUR_API_KEY with the key obtained in step 2
• Choose your desired wallet type and admin signer from the table above

Now, run the script:

The API will return a response with your new wallet details. Save the wallet address, as you’ll use it in the next step.

{
   "type": "evm-smart-wallet",
   "config": {
       "adminSigner": {
           "type": "evm-fireblocks-custodial",
           "address": "0x92bbE9813D88F36Cb7Fd2D71E0F4Ceb33C3C59e9",
           "locator": "evm-fireblocks-custodial:0x92bbE9813D88F36Cb7Fd2D71E0F4Ceb33C3C59e9"
       }
   },
   "address": "0x3Ece49857cbB0DFFcbAf5eE9e5850e94eceBAb2f",
   "createdAt": "2025-02-03T22:48:45.707Z"
}

First, let’s get some test USDC to work with. Visit Crossmint Testnet USDXM Faucet and paste your wallet address from step 4 to receive test USDC tokens in your chain of choice.

Now that you have some tokens, let’s check the wallet’s balance: