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

# How to Stream Solana Pump AMM Data

> Learn how to stream live Solana Pump AMM data using LaserStream WebSocket. Log-based monitoring available on all plans with automatic reconnection.

## Using LaserStream WebSocket

<p>
  [LaserStream WebSocket](/rpc/websocket) gives you a simple WebSocket integration and is available on all Helius plans, making it a convenient choice for developers. This example uses Solana's `logsSubscribe` method, so you receive log messages only.
</p>

<Tip>
  LaserStream WebSocket is up to 200 ms faster than the standard Agave RPC-based WebSocket implementation.
</Tip>

### How it works

Connect to the [LaserStream WebSocket endpoint](https://www.helius.dev/docs/api-reference/endpoints), subscribe to logs mentioning the [Pump AMM program](https://orbmarkets.io/address/pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA/history), and process the incoming log data.

The example below includes automatic reconnection logic with exponential backoffs.

## Requirements

<Card>
  <ul>
    <li><strong>Node.js ≥ 18</strong> (tested with v20)</li>
    <li><strong>TypeScript ≥ 5</strong> if you plan to run the <code>.ts</code> samples with <code>ts‑node</code></li>
    <li>Any <strong>Helius plan</strong> – works with all plan tiers</li>
    <li>An <strong>environment variable</strong> named <code>HELIUS\_API\_KEY</code> that stores your API key</li>
  </ul>

  <Tip>
    Install dependencies globally: <code>npm i -g typescript ts‑node</code>
  </Tip>
</Card>

## Implementation

<Steps>
  <Step title="Install Dependencies">
    ```bash theme={"system"}
    npm install ws
    ```
  </Step>

  <Step title="Create the WebSocket Client">
    Create a file named `standard-ws-pump.ts` with the following code:

    ```ts theme={"system"}
    // standard-ws-pump.ts
    import WebSocket from 'ws';

    // Configuration
    const MAX_RETRIES = 5;
    const INITIAL_RETRY_DELAY = 1000; // 1 second
    let retryCount = 0;
    let retryTimeout: NodeJS.Timeout | null = null;
    let subscriptionId: number | null = null;

    // Create a WebSocket connection
    let ws: WebSocket;

    function connect() {
      ws = new WebSocket(`wss://mainnet.helius-rpc.com/?api-key=${process.env.HELIUS_API_KEY}`);

      // Function to send a request to the WebSocket server
      function sendRequest(ws: WebSocket): void {
        const request = {
          "jsonrpc": "2.0",
          "id": 1,
          "method": "logsSubscribe",
          "params": [
            {
              "mentions": ["pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA"]
            }
          ]
        };
        console.log('Sending subscription request:', JSON.stringify(request, null, 2));
        ws.send(JSON.stringify(request));
      }

      // Function to send a ping to the WebSocket server
      function startPing(ws: WebSocket): void {
        setInterval(() => {
          if (ws.readyState === WebSocket.OPEN) {
            ws.ping();
            console.log('Ping sent');
          }
        }, 30000); // Ping every 30 seconds
      }

      // Define WebSocket event handlers
      ws.on('open', function open() {
        console.log('WebSocket is open');
        retryCount = 0; // Reset retry count on successful connection
        sendRequest(ws); // Send a request once the WebSocket is open
        startPing(ws); // Start sending pings
      });

      ws.on('message', function incoming(data: WebSocket.Data) {
        const messageStr = data.toString('utf8');
        try {
          const messageObj = JSON.parse(messageStr);

          // Handle subscription confirmation
          if (messageObj.result && typeof messageObj.result === 'number') {
            subscriptionId = messageObj.result;
            console.log('Successfully subscribed with ID:', subscriptionId);
            return;
          }

          // Handle actual log data
          if (messageObj.params && messageObj.params.result) {
            const logData = messageObj.params.result;
            console.log('Received log data:', JSON.stringify(logData, null, 2));
            
            // Extract the transaction signature if available
            if (logData.signature) {
              console.log('Transaction signature:', logData.signature);
              // You can call getTransaction with this signature to get the full transaction details
            }
          } else {
            console.log('Received message:', JSON.stringify(messageObj, null, 2));
          }
        } catch (e) {
          console.error('Failed to parse JSON:', e);
        }
      });

      ws.on('error', function error(err: Error) {
        console.error('WebSocket error:', err);
      });

      ws.on('close', function close() {
        console.log('WebSocket is closed');
        if (subscriptionId) {
          console.log('Last subscription ID was:', subscriptionId);
        }
        reconnect();
      });
    }

    function reconnect() {
      if (retryCount >= MAX_RETRIES) {
        console.error('Max retry attempts reached. Please check your connection and try again.');
        return;
      }

      const delay = INITIAL_RETRY_DELAY * Math.pow(2, retryCount);
      console.log(`Attempting to reconnect in ${delay/1000} seconds... (Attempt ${retryCount + 1}/${MAX_RETRIES})`);

      retryTimeout = setTimeout(() => {
        retryCount++;
        connect();
      }, delay);
    }

    // Start the initial connection
    connect();

    // Cleanup function
    process.on('SIGINT', () => {
      if (retryTimeout) {
        clearTimeout(retryTimeout);
      }
      if (ws) {
        ws.close();
      }
      process.exit();
    });
    ```
  </Step>

  <Step title="Set Environment Variables">
    Add your Helius API key as an environment variable:

    ```bash theme={"system"}
    export HELIUS_API_KEY=your-helius-api-key
    ```

    Replace `your-helius-api-key` with your actual Helius API key from the dashboard.

    If you don't have an API key, [sign up](https://dashboard.helius.dev/signup) or have your agent create one programmatically with [the Helius CLI](https://www.helius.dev/docs/api-reference/helius-cli).
  </Step>

  <Step title="Run the Application">
    Execute the script to start streaming Pump AMM data:

    ```bash theme={"system"}
    npx ts-node standard-ws-pump.ts
    ```

    You will receive log messages that mention the Pump AMM program. To fetch the full transaction, call [`getTransaction`](/api-reference/rpc/http/gettransaction) with the signature from the log entry.
  </Step>
</Steps>

## Key benefits

* **Universal access** - Available on all Helius plans, including free tier
* **Lightweight** - Minimal data transfer since only logs are streamed, not full transactions
* **Easy to implement** - Uses standard Solana RPC WebSocket protocol
* **Low barrier to entry** - Perfect for prototyping and initial monitoring

## Getting full transaction details

Since the Standard WebSocket only provides log messages, you'll need an additional step to get complete transaction data:

```ts theme={"system"}
// Example of how to fetch a full transaction from a log entry
async function fetchFullTransaction(signature: string) {
  const response = await fetch(`https://mainnet.helius-rpc.com/?api-key=${process.env.HELIUS_API_KEY}`, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      jsonrpc: '2.0',
      id: 'my-id',
      method: 'getTransaction',
      params: [
        signature,
        {
          encoding: 'jsonParsed',
          maxSupportedTransactionVersion: 0
        }
      ]
    })
  });
  
  const data = await response.json();
  return data.result;
}
```

## Common issues and solutions

<AccordionGroup>
  <Accordion title="401 Unauthorized">
    Verify your HELIUS\_API\_KEY is correct.
  </Accordion>

  <Accordion title="No logs received">
    Ensure the Pump AMM program address is correct and there is activity on the program.
  </Accordion>

  <Accordion title="Connection dropping">
    Implement more robust reconnection logic or check network stability.
  </Accordion>
</AccordionGroup>