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# ERC-7821 Actions

## Overview

ERC-7821 Actions execute call batches through a contract that implements the
[ERC-7821](https://eips.ethereum.org/EIPS/eip-7821) minimal batch executor interface.

Use these actions with contracts such as delegated
[EIP-7702](https://eips.ethereum.org/EIPS/eip-7702) accounts.
Viem checks the execution mode, encodes the calls, and sends the transaction.

Pass `erc7821Actions()` to [`.extend()`](/docs/clients/create#extending-a-client) to add these
actions to a Client.

:::code-group
```ts twoslash [example.ts]
import { client } from './viem.config'

const hash = await client.erc7821.execute({
  address: client.account.address,
  calls: [
    { data: '0xdeadbeef', to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8' },
    { to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8', value: 69420n },
  ],
})
// @log: '0x9d2478f5cb1d21ac4153dbe5da9700e106a06d1cf1b957554fcd51de26eec4ae'
```

```ts twoslash [viem.config.ts] filename="viem.config.ts"
import { Account, Client, erc7821Actions, http } from 'viem'
import { mainnet } from 'viem/chains'

export const client = Client.create({
  account: Account.fromPrivateKey('0x...'),
  chain: mainnet,
  transport: http(),
}).extend(erc7821Actions())
```
:::

<Cards>
  <Card title="Execute Calls" description="Execute one call batch through an ERC-7821 contract." icon="lucide:play" to="/docs/actions/erc7821/execute" />

  <Card title="Execute Batches" description="Execute multiple call batches through an ERC-7821 contract." icon="lucide:layers" to="/docs/actions/erc7821/executeBatches" />

  <Card title="Check Execution Mode" description="Check whether a contract supports an execution mode." icon="lucide:badge-check" to="/docs/actions/erc7821/supportsExecutionMode" />
</Cards>