> ## Documentation Index
> Fetch the complete documentation index at: https://docs.portalhq.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Sign Ethereum transactions

> This guide will walk you through how to sign an Ethereum transaction using the Enclave MPC API.

So far you have been able to create a Portal client and create their MPC wallets. Now, lets sign a transaction and send someone some MON tokens over Monad Testnet.

### Steps

1. In order to send your first transaction, you’ll first need to fund your wallet. You can get some test MON tokens by using the [Client API Fund Wallet endpoint](../../client/reference#fund-wallet-with-testnet-tokens).

```bash theme={null}
curl --request POST \
  --url https://api.portalhq.io/api/v3/clients/me/fund \
  --header 'Authorization: Bearer [clientApiKey|clientSessionToken]' \
  --header 'Content-Type: application/json' \
  --data '{
	"chainId": "eip155:10143",
	"token": "NATIVE",
	"amount": "0.01"
}'
```

2. Next, we’ll need to format a transaction object.

Here is the example transaction:

```ts theme={null}
const transaction = {
  "value": "0x01",
  "from": "YOUR_ETH_ADDRESS",
  "to": "RECIPIENT_ADDRESS",
  "data": ""
};
```

3. Now that we some testnet ETH, let's send a transaction! We will send our test funds to a Portal test wallet using a single API request to `https://mpc-client.portalhq.io/v1/sign` .
   1. You can learn more about Ethereum transactions here, but for this example you only need to know about a few fields:
      1. `method`: this defines which Ethereum RPC signer method we want to use.
      2. `params` : these are the parameters of your transaction.
         * `value` : this is the amount of MON measured in wei and hex encoded.
         * `from`: this is the address of the sender - your wallet in this case.
         * `to`: this is the address you’re sending to - our test wallet in this case.
         * `data`: this is used for interacting with smart contracts - we can ignore it.

In the example below we are using the `eth_sendTransaction` Ethereum RPC method to instruct the Portal API to both *sign* and *submit* a transaction to the blockchain.

```bash theme={null}
curl -X POST 'https://mpc-client.portalhq.io/v1/sign' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer <clientApiKey>' \
  -d '{
    "share": $share,
    "method": "eth_sendTransaction",
    "params": {"value": "0x01","from": "YOUR_ETH_ADDRESS","to": "RECIPIENT_ADDRESS","data": ""},
    "rpcUrl": "YOUR_RPC_URL",
    "chainId": "eip155:10143"
  }'
```

<Note>
  If your wallet is not funded, you will receive a RPC error on this step.
</Note>

Congrats! 🎉 You have successfully created a wallet and signed a transaction!