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

# Getting Started

### Client SDK

Client SDK
The main Avalanche client SDK for interacting with Avalanche nodes and building blockchain applications.

Features:

* Complete API coverage for P-Chain, X-Chain, and C-Chain.
* Full viem compatibility - anything you can do with viem works here.
* TypeScript-first design with full type safety.
* Abstractions over the JSON-RPC API to make your life easier.
* Wallet integration and transaction management.
* First-class APIs for interacting with Smart Contracts.
* Retrieve balances and UTXOs for addresses..
* Build, sign, and issue transactions to any chain.
* Perform cross-chain transfers between X, P and C chains.
* Add validators and delegators.
* Create subnets and blockchains, convert subnets to L1s.

The SDK is currently available in TypeScript, with more languages coming soon. If you are interested in a language that is not listed, please reach out to us in the [#dev-tools](https://discord.com/channels/578992315641626624/1280920394236297257) channel in the [Avalanche Discord](https://discord.gg/avax).

<CardGroup cols={1}>
  <Card title="ChainKit SDK TypeScript" icon="npm">
    [https://www.npmjs.com/package/@avalanche-sdk/client](https://www.npmjs.com/package/@avalanche-sdk/client)
  </Card>
</CardGroup>

<CardGroup cols={1}>
  <Card title="ChainKit SDK TypeScript" icon="github">
    [https://github.com/ava-labs/avalanche-sdk-typescript](https://github.com/ava-labs/avalanche-sdk-typescript)
  </Card>
</CardGroup>

### SDK Installation

<CodeGroup>
  ```npm NPM theme={null}
  npm add @avalanche-sdk/client
  ```

  ```pnpm PNPM theme={null}
  pnpm add @avalanche-sdk/client
  ```

  ```bun Bun theme={null}
  bun add @avalanche-sdk/client
  ```

  ```yarn Yarn theme={null}
  yarn add @avalanche-sdk/client zod

  # Note that Yarn does not install peer dependencies automatically. You will need

  # to install zod as shown above.

  ```
</CodeGroup>

### SDK Example Usage

```javascript theme={null}
import { createAvalancheClient } from '@avalanche-sdk/client'
import { avalanche } from '@avalanche-sdk/client/chains'

const client = createAvalancheClient({
  chain: avalanche,
  transport: {
    type: "http"
  }
})

// Get account balance
const balance = await client.getBalance({ 
  address: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
})

```

Refer to the code samples provided for each route to see examples of how to use them in the SDK. Explore routes here [Data API](/data-api/health-check/get-the-health-of-the-service),
[Metrics API](/metrics-api/health-check/get-the-health-of-the-service) & [Webhooks API](/webhooks-api/webhooks/list-webhooks).