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

# wallet_sendCalls

> Submit a batch of calls to the wallet for execution

Defined in [EIP-5792](https://eips.ethereum.org/EIPS/eip-5792)

<Info>
  Requests that the wallet submits a batch of calls. This method allows applications to send multiple transactions atomically or sequentially.
</Info>

## Parameters

<ParamField body="version" type="string" required>
  The version of the API format. This must be "2.0.0".
</ParamField>

<ParamField body="id" type="string">
  The ID of the batch of calls for tracking purposes.
</ParamField>

<ParamField body="from" type="string" required>
  The sender's address.
  Pattern: `^0x[0-9a-fA-F]{40}$`
</ParamField>

<ParamField body="chainId" type="string" required>
  The EIP-155 chain ID of the calls. This must match the currently selected network in the wallet.
  Pattern: `^0x([1-9a-f]+[0-9a-f]*|0)$`
</ParamField>

<ParamField body="atomicRequired" type="boolean" required>
  `true` if the wallet must execute all calls atomically. If `false`, the wallet may execute the calls sequentially without atomicity. If `false` and the wallet is capable of executing the calls atomically, it may do so.
</ParamField>

<ParamField body="calls" type="array" required>
  An array of call objects to execute.

  <Expandable title="Call object structure">
    <ParamField body="to" type="string" required>
      The recipient address for the call.
    </ParamField>

    <ParamField body="value" type="string" required>
      The value to send with the call (in wei, hex format).
    </ParamField>

    <ParamField body="data" type="string">
      The call data (optional, hex format).
    </ParamField>

    <ParamField body="capabilities" type="object">
      Optional call-level capabilities. For example, [`gasLimitOverride`](/base-account/reference/core/capabilities/gasLimitOverride) allows you to specify a gas limit for an individual call.
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="capabilities" type="object">
  Dapps can use this object to communicate with the wallet about supported capabilities.
</ParamField>

## Returns

<ResponseField name="result" type="object">
  An object containing information about the sent batch, including transaction details and status.
</ResponseField>

## Example Usage

<RequestExample>
  ```json Request theme={null}
  {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "wallet_sendCalls",
    "params": [{
      "version": "2.0.0",
      "from": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
      "chainId": "0xaa36a7",
      "atomicRequired": true,
      "calls": [
        {
          "to": "0x54f1C1965B355e1AB9ec3465616136be35bb5Ff7",
          "value": "0x0"
        },
        {
          "to": "0x2D48e6f5Ae053e4E918d2be53570961D880905F2",
          "value": "0x0"
        }
      ]
    }]
  }
  ```

  ```json Request with call-level gas limit overrides theme={null}
  {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "wallet_sendCalls",
    "params": [{
      "version": "2.0.0",
      "from": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
      "chainId": "0x2105",
      "atomicRequired": true,
      "calls": [
        {
          "to": "0x54f1C1965B355e1AB9ec3465616136be35bb5Ff7",
          "value": "0x0",
          "data": "0x095ea7b3...",
          "capabilities": {
            "gasLimitOverride": {
              "value": "0x13880"
            }
          }
        },
        {
          "to": "0x2D48e6f5Ae053e4E918d2be53570961D880905F2",
          "value": "0x0",
          "data": "0x38ed1739...",
          "capabilities": {
            "gasLimitOverride": {
              "value": "0x30D40"
            }
          }
        }
      ]
    }]
  }
  ```
</RequestExample>

<ResponseExample>
  ```json Success Response theme={null}
  {
    "id": 1,
    "jsonrpc": "2.0",
    "result": {
      "batchId": "0x123...",
      "status": "pending"
    }
  }
  ```
</ResponseExample>

## Error Handling

<ResponseField name="code" type="number">
  Error code indicating the type of error that occurred.
</ResponseField>

<ResponseField name="message" type="string">
  Human-readable error message describing what went wrong.
</ResponseField>

| Code   | Message                                                                  | Description                 |
| ------ | ------------------------------------------------------------------------ | --------------------------- |
| -32602 | The wallet cannot parse the request                                      | Invalid request format      |
| -32000 | Version not supported                                                    | API version not supported   |
| 4001   | User rejected the request                                                | User denied the transaction |
| 4100   | The requested account and/or method has not been authorized by the user  | Authorization required      |
| 5700   | The wallet does not support a capability that was not marked as optional | Missing capability          |
| 5710   | EIP-7702 not supported on the specified chain ID                         | Chain not supported         |
| 5720   | There is already a batch submitted with the specified batch ID           | Duplicate batch ID          |
| 5740   | The batch is too large for the wallet to process                         | Batch size limit exceeded   |
| 5750   | EIP-7702 upgrade rejected for this chain and account                     | Upgrade rejected            |

<Warning>
  Ensure that the `chainId` matches the currently selected network in the wallet to avoid transaction failures.
</Warning>

<Tip>
  When `atomicRequired` is set to `false`, consider the implications of partial execution if some calls fail while others succeed.
</Tip>