{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "logsSubscribe",
  "params": [
    {
      "mentions": ["11111111111111111111111111111111"]
    },
    {
      "commitment": "finalized"
    }
  ]
}

{
  "jsonrpc": "2.0",
  "result": 24040,
  "id": 1
}

​
Endpoints

Websockets are available on mainnet and devnet with the following URLs:

  • Mainnet wss://mainnet.helius-rpc.com/?api-key=<API_KEY>
  • Devnet wss://devnet.helius-rpc.com/?api-key=<API_KEY>
Websockets have a 10-minute inactivity timer; implementing health checks and sending pings every minute is heavily recommended to keep the websocket connection alive.

​
Authorizations

​
api-key
string
required

Your Helius API key. You can get one for free in the dashboard.

​
Body

​
params
array
required

​
Response

​
result
integer

Subscription id (needed to unsubscribe)

​
Notification Format

The notification will be an RpcResponse JSON object with value equal to:

  • signature: <string> - The transaction signature base58 encoded.
  • err: <object|null> - Error if transaction failed, null if transaction succeeded. See TransactionError definitions.
  • logs: <array[string]> - Array of log messages the transaction instructions output during execution.
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "logsSubscribe",
  "params": [
    {
      "mentions": ["11111111111111111111111111111111"]
    },
    {
      "commitment": "finalized"
    }
  ]
}

{
  "jsonrpc": "2.0",
  "result": 24040,
  "id": 1
}