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

# Overview

> Choose the right ChainStream SDK for you

## Official SDKs

ChainStream provides official SDKs in multiple languages, wrapping common API operations for a better development experience.

<CardGroup cols={2}>
  <Card title="TypeScript" icon="js" href="/en/sdks/typescript">
    For Node.js and browser applications
  </Card>

  <Card title="Python" icon="python" href="/en/sdks/python">
    For data analysis and backend services
  </Card>

  <Card title="Go" icon="golang" href="/en/sdks/go">
    For high-performance backend services
  </Card>

  <Card title="Rust" icon="rust" href="/en/sdks/rust">
    For systems programming and performance-critical applications
  </Card>
</CardGroup>

## SDK Features

All SDKs provide:

* **REST API Client**: Call all ChainStream data APIs
* **WebSocket Client**: Subscribe to real-time data streams
* **Auto Authentication**: Automatic token management
* **Type Safety**: Full type definitions (TypeScript, Go, Rust)

## Installation

<Tabs>
  <Tab title="TypeScript">
    ```bash theme={null}
    npm install @chainstream-io/sdk
    ```
  </Tab>

  <Tab title="Python">
    ```bash theme={null}
    pip install chainstream-sdk
    ```
  </Tab>

  <Tab title="Go">
    ```bash theme={null}
    go get github.com/chainstream-io/chainstream-go-sdk
    ```
  </Tab>

  <Tab title="Rust">
    ```toml theme={null}
    # Add to Cargo.toml
    [dependencies]
    chainstream-sdk = "0.1"
    ```
  </Tab>
</Tabs>

## Quick Comparison

<Tabs>
  <Tab title="TypeScript">
    ```typescript theme={null}
    import { ChainStreamClient } from '@chainstream-io/sdk';

    const client = new ChainStreamClient('YOUR_ACCESS_TOKEN');

    // REST API call
    const token = await client.token.getToken('sol', 'TOKEN_ADDRESS');

    // WebSocket subscription
    client.stream.subscribeTokenCandles({
      chain: 'sol',
      tokenAddress: 'TOKEN_ADDRESS',
      resolution: Resolution['1s'],
      callback: (data) => console.log(data)
    });
    ```
  </Tab>

  <Tab title="Python">
    ```python theme={null}
    from chainstream import ChainStreamClient
    from chainstream.stream import Resolution

    client = ChainStreamClient(access_token='YOUR_ACCESS_TOKEN')

    # REST API call
    token = await client.token.get_metadata('sol', 'TOKEN_ADDRESS')

    # WebSocket subscription
    await client.stream.subscribe_token_candles(
        chain='sol',
        token_address='TOKEN_ADDRESS',
        resolution=Resolution.S1,
        callback=lambda data: print(data)
    )
    ```
  </Tab>

  <Tab title="Go">
    ```go theme={null}
    import chainstream "github.com/chainstream-io/chainstream-go-sdk"

    client, _ := chainstream.NewChainStreamClient(accessToken, &chainstream.ChainStreamClientOptions{})

    // REST API call
    resp, _ := client.Token.GetToken(ctx, "sol", "TOKEN_ADDRESS")

    // WebSocket subscription
    client.Stream.SubscribeTokenCandles("sol", "TOKEN_ADDRESS", token.N1s, func(data stream.TokenCandle) {
        fmt.Println(data)
    }, "")
    ```
  </Tab>

  <Tab title="Rust">
    ```rust theme={null}
    use chainstream_sdk::{ChainStreamClient, stream::{Resolution, TokenCandle}};

    let client = ChainStreamClient::new("YOUR_ACCESS_TOKEN", None);

    // WebSocket subscription
    client.stream.subscribe_token_candles(
        "sol",
        "TOKEN_ADDRESS",
        Resolution::X1s,
        |candle: TokenCandle| {
            println!("{:?}", candle);
        },
        None,
    ).await?;
    ```
  </Tab>
</Tabs>

## SDK vs Direct API

| Feature         | SDK              | Direct API            |
| --------------- | ---------------- | --------------------- |
| Type Safety     | Yes (TS/Go/Rust) | No                    |
| Auth Management | Automatic        | Manual                |
| Error Handling  | Wrapped          | Raw HTTP errors       |
| WebSocket       | Built-in         | Manual implementation |
| Code Volume     | Less             | More                  |
| Flexibility     | Medium           | Full                  |

## Next Steps

<CardGroup cols={2}>
  <Card title="TypeScript SDK" icon="js" href="/en/sdks/typescript">
    View TypeScript documentation
  </Card>

  <Card title="Python SDK" icon="python" href="/en/sdks/python">
    View Python documentation
  </Card>

  <Card title="Go SDK" icon="golang" href="/en/sdks/go">
    View Go documentation
  </Card>

  <Card title="Rust SDK" icon="rust" href="/en/sdks/rust">
    View Rust documentation
  </Card>
</CardGroup>