# WebSocket Overview

> Endpoint configuration and subscription patterns for real-time Solana WebSocket subscriptions.

Canonical: https://nolimitnodes.com/docs/api-reference/websocket/overview

Subscribe to real-time Solana blockchain events using the WebSocket RPC interface.

## Endpoint

```
wss://ws.nln.clr3.org
```

Authenticate with the `x-api-key` header on connect.

## Quick Connect

```bash
wscat -c wss://ws.nln.clr3.org -H "x-api-key: YOUR_API_KEY"
```

## Subscription Pattern

All WebSocket subscriptions follow a three-step lifecycle:

1. **Subscribe** - Send a `*Subscribe` request to start receiving notifications. The response contains a subscription ID.
2. **Receive** - Notifications are pushed to your client as events occur on chain.
3. **Unsubscribe** - Send a `*Unsubscribe` request with the subscription ID to stop receiving notifications.