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# Actions

## Overview

Actions perform JSON-RPC requests through a [Client](/docs/clients).
Each standalone action takes a Client as its first argument.

Decorators attach related actions to a Client as methods.
For example, [`publicActions`](/docs/actions/public) adds Public Actions through
[`.extend()`](/docs/clients/create#extending-a-client).

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

const blockNumber = await client.block.getNumber()
```

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

export const client = Client.create({
  chain: mainnet,
  transport: http(),
}).extend(publicActions())
```
:::

<Cards>
  <Card title="Public Actions" description="Read chain state and simulate calls: get balances, blocks, and more." icon="lucide:globe" to="/docs/actions/public" />

  <Card title="Wallet Actions" description="Create, sign, and broadcast transactions from Local or JSON-RPC Accounts." icon="lucide:wallet" to="/docs/actions/wallet" />

  <Card title="Test Actions" description="Mine blocks, set balances, and manage state on a local test node." icon="lucide:flask-conical" to="/docs/actions/test" />

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

  <Card title="Capabilities" description="Type wallet capability requests and responses." icon="lucide:badge-check" to="/docs/actions/capabilities" />
</Cards>