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Fund your Wallet

Now that you have a wallet, the next step is to get test tokens for it. You can fund your wallet using portal.receiveTestnetAsset. If you are looking for a greater variety of test tokens, we recommend exploring our faucets page.
The chainId will need to be a CAIP-2 compliant Chain ID. For more info on Chain ID formatting, see this doc.
const chainId = 'eip155:10143'; // Monad Testnet

const params = {
  amount: '0.01', // You will receive 0.01 MON
  token: 'NATIVE', // Token, use "NATIVE" for the chain's native token
};

// Fund your Portal wallet
const response = await portal.receiveTestnetAsset(chainId, params);

console.log(`✅ Transaction hash: ${response.data.txHash}`);

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Sending Tokens from your Wallet

Portal provides two ways to send transactions:
  1. portal.sendAsset() - A simple method for sending tokens from your Portal wallet.
  2. portal.provider.request() - Direct access to the underlying web3 provider for custom transactions. (You can learn more about this method here.)
For most use cases, we recommend using portal.sendAsset() as shown in the examples below.

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Submitting an EVM Transaction

const chainId = 'eip155:10143'; // Monad Testnet

const params = {
  amount: '0.0001', // Sends 0.0001 MON
  to: '0xDestinationAddress', // The recipient address
  token: 'NATIVE', // Token, use "NATIVE" for the chain's native token
};

// Send the tokens
const txHash = await portal.sendAsset(chainId, params);

console.log(`✅ Transaction hash: ${txHash}`);
If your Portal client is using Account Abstraction, then txHash is actually a User Operation hash. You can manually look up the user operation hash here.

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Submitting a Solana Transaction

You will need SOL to submit a Solana transaction, which is not currently supported by portal.receiveTestnetAsset. You can find a faucet to get test SOL tokens here.
const chainId = 'solana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1'; // Solana Devnet

const params = {
  amount: '0.0001', // Sends 0.0001 SOL
  to: '0xDestinationAddress', // The recipient address
  token: 'NATIVE', // Token, use "NATIVE" for the chain's native token
};

// Send the tokens
const txHash = await portal.sendAsset(chainId, params);

console.log(`✅ Transaction hash: ${txHash}`);
You just sent your first token from your Portal wallet, that’s awesome! 🎉

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Advanced: Controlling Gas Sponsorship

If your client is using Account Abstraction, you can control whether Portal sponsors the gas fees for each transaction using the sponsorGas parameter in SendAssetParams.

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Example: User Pays Gas

const chainId = 'eip155:11155111'; // Ethereum sepolia
const recipientAddress = '0x...';
const amount = '0.000001';
const token = 'NATIVE';

const params1 = {
  to: recipientAddress,
  amount,
  token,
  sponsorGas: false, // Portal client pays transaction fees
};

// Send the tokens
const txHash = await portal.sendAsset(chainId, params1);
By setting sponsorGas: false, the Portal client will pay for the transaction fees instead of having them sponsored. This is useful for testing or when you want users to pay for specific operations.
Omitting sponsorGas or setting it to true produces the same behavior - both will sponsor gas if your environment is configured for AA on that chain. Only sponsorGas: false changes the default behavior to disable sponsorship.
Learn more about gas sponsorship control in the Account Abstraction guide. You may have a more advanced use case than simply sending tokens from your Portal wallet. Next, we will dive into how to build your own transaction and also how to sign it (without submitting it).