> ## Documentation Index
> Fetch the complete documentation index at: https://lago-ftr-wallet-improvements.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Top-up a wallet

> This endpoint is used to top-up an active wallet.

<RequestExample>
  ```bash cURL
  LAGO_URL="https://api.getlago.com"
  API_KEY="__YOUR_API_KEY__"

  curl --location --request POST "$LAGO_URL/api/v1/wallet_transactions" \
    --header "Authorization: Bearer $API_KEY" \
    --header 'Content-Type: application/json' \
    --data-raw '{
      "wallet_transaction": {
        "wallet_id": "wallet_1234",
        "paid_credits": "20.0",
        "granted_credits": "10.0"
      }
    }'
  ```

  ```python Python
  from lago_python_client.client import Client
  from lago_python_client.exceptions import LagoApiError
  from lago_python_client.models import WalletTransaction

  client = Client(api_key='__YOUR_API_KEY__')

  transaction = WalletTransaction(
    wallet_id='wallet_1234',
    paid_credits='20.0',
    granted_credits='10.0'
  )

  try:
      client.wallet_transactions.create(transaction)
  except LagoApiError as e:
      repair_broken_state(e)  # do something on error or raise your own exception
  ```

  ```ruby Ruby
  require 'lago-ruby-client'

  client = Lago::Api::Client.new({api_key: '__YOUR_API_KEY__'})

  client.wallet_transactions.create({
      wallet_id: 'wallet_1234',
      paid_credits: '20.0',
      granted_credits: '10.0'
  })
  ```

  ```js Javascript
  await client.walletTransactions.createWalletTransaction({
    wallet_transaction: {
      wallet_id: "wallet_1234",
      paid_credits: 20.0,
      granted_credits: 10.0,
    },
  });
  ```

  ```go Go
  import "fmt"
  import "github.com/getlago/lago-go-client"

  func main() {
  lagoClient := lago.New().
      SetApiKey("__YOUR_API_KEY__")

  walletTransactionInput := &lago.WalletTransactionInput{
      WalletId:           "wallet_1234",
      PaidCredits:        "20.0"
      GrantedCredits:     "10.0",
  }

  transactions, err := lagoClient.WalletTransaction().Create(walletTransactionInput)
  if err != nil {
      // Error is *lago.Error
      panic(err)
  }

  // wallet is *lago.Wallet
  fmt.Println(transactions)
  }
  ```

  ```csharp C#
  using System.Collections.Generic;
  using System.Diagnostics;
  using Org.OpenAPITools.Api;
  using Org.OpenAPITools.Client;
  using Org.OpenAPITools.Model;

  namespace Example
  {
    public class CreateWalletTransactionExample
    {
        public static void Main()
        {
            Configuration.Default.BasePath = "https://api.getlago.com/api/v1";
            // Configure HTTP bearer authorization: bearerAuth
            Configuration.Default.AccessToken = "YOUR_ACCESS_TOKEN";

            var apiInstance = new WalletsApi(Configuration.Default);
            var walletTransactionInput = new WalletTransactionInput(); // WalletTransactionInput | Wallet transaction payload

            try
            {
                // Create a new wallet transaction
                WalletTransaction result = apiInstance.CreateWalletTransaction(walletTransactionInput);
                Debug.WriteLine(result);
            }
            catch (ApiException e)
            {
                Debug.Print("Exception when calling WalletsApi.CreateWalletTransaction: " + e.Message );
                Debug.Print("Status Code: "+ e.ErrorCode);
                Debug.Print(e.StackTrace);
            }
        }
    }
  }
  ```

  ```php PHP
  <?php
  require_once(__DIR__ . '/vendor/autoload.php');


  // Configure Bearer authorization: bearerAuth
  $config = OpenAPI\Client\Configuration::getDefaultConfiguration()->setAccessToken('YOUR_ACCESS_TOKEN');


  $apiInstance = new OpenAPI\Client\Api\WalletsApi(
    // If you want use custom http client, pass your client which implements `GuzzleHttp\ClientInterface`.
    // This is optional, `GuzzleHttp\Client` will be used as default.
    new GuzzleHttp\Client(),
    $config
  );
  $wallet_transaction_input = new \OpenAPI\Client\Model\WalletTransactionInput(); // \OpenAPI\Client\Model\WalletTransactionInput | Wallet transaction payload

  try {
    $result = $apiInstance->createWalletTransaction($wallet_transaction_input);
    print_r($result);
  } catch (Exception $e) {
    echo 'Exception when calling WalletsApi->createWalletTransaction: ', $e->getMessage(), PHP_EOL;
  }
  ```
</RequestExample>