# Websocket - Token price

The WebSocket Token Price API provides real-time updates for token prices by token. Clients can subscribe to specific tokens and receive live price updates.

### 1. Connection Workflow

Establish Websocket connection to the `wss://ws.price.astralane.io/price-by-token`

1. Specify your API key in `x-api-key` header;
2. Send subscription request for desired list of tokens;
3. Listen for events corresponding to the subscribed room type to receive real-time price updates.

### 2. Sample code

```javascript
const WebSocket = require('ws');

const tokens = [
  "So11111111111111111111111111111111111111112", 
  "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"
];

const socket = new WebSocket('wss://ws.price.astralane.io/price-by-token', {
  headers: {
    'x-api-key': 'YOUR-API-KEY'
  }
});

let messageCount = 0;
let unsubscribeTimeout;

const subscribeEvent = {
  event: "subscribe",
  tokens: tokens,
};

const unsubscribeEvent = {
  event: "unsubscribe", 
  tokens: tokens,
};

socket.on('open', function() {
  console.log('Connected to server');
  console.log('Subscribing to tokens:', tokens);

  socket.send(JSON.stringify(subscribeEvent));
  
  // Set timeout to unsubscribe after 60 seconds
  unsubscribeTimeout = setTimeout(() => {
    console.log('Unsubscribing after 60 seconds...');
    socket.send(JSON.stringify(unsubscribeEvent));
    socket.close();
  }, 60000);
});

socket.on('message', function(data) {
  messageCount++;
  console.log(`Received message #${messageCount}`);
  
  try {
    const parsedData = JSON.parse(data.toString());
    console.log('Parsed data:', parsedData);
  } catch (e) {
    console.log('Raw data (not JSON):', data.toString());
  }
});

socket.on('error', function(error) {
  console.error('WebSocket error:', error);
  clearTimeout(unsubscribeTimeout);
});

socket.on('close', function(code, reason) {
  console.log(`Connection closed: [${code}] ${reason}`);
  console.log(`Total messages received: ${messageCount}`);
  clearTimeout(unsubscribeTimeout);
});


```

### 2.1 Response example

```json
{
    "timestamp": "1741771359",
    "decimals": 9,
    "name": "Wrapped SOL",
    "symbol": "SOL",
    "uri": "https://raw.githubusercontent.com/solana-labs/token-list/main/assets/mainnet/So11111111111111111111111111111111111111112/logo.png",
    "supply": 509384498.1158462,
    "price_in_sol": 1,
    "price_in_usd": 124.3285941413753,
    "token": "So11111111111111111111111111111111111111112"
}
```

### **3. Disconnection**

In the event of a disconnection, the client must automatically reconnect and resubscribe to continue receiving uninterrupted real-time updates.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://astralane.gitbook.io/docs/data-pipelines/our-products/websocket-token-price.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.