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Submit a bundle of up to 5 fully-signed transactions for atomic execution. All transactions execute sequentially — if any fails, the entire bundle is rejected. Requires a tip to a Jito tip account in at least one transaction.

​
Endpoint

POST https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY

​
Request

​
jsonrpc
string
required
"2.0"
​
id
number
required
Request identifier.
​
method
string
required
"sendBundle"
​
params[0]
array[string]
required
Array of up to 5 fully-signed transactions, base64 encoded.
​
params[1].encoding
string
"base64" (recommended) or "base58". Default: "base58".

​
Headers

​
jito-region
string
Optional. Route to a specific Jito Block Engine region. Values: ams, dub, fra, lon, nyc, slc, sgp, tyo, mainnet. If omitted, routes to the global endpoint (geo-routed to nearest).

​
Request Example

curl "https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY" \
  -X POST \
  -H "Content-Type: application/json" \
  -H "jito-region: nyc" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "sendBundle",
    "params": [
      [
        "BASE64_SIGNED_TX_1",
        "BASE64_SIGNED_TX_2"
      ],
      {
        "encoding": "base64"
      }
    ]
  }'

​
Response

​
result
string
Bundle ID (SHA-256 hash of the transaction signatures). Use with getBundleStatuses to track landing.
{
  "jsonrpc": "2.0",
  "result": "892b79ed49138bfb3aa5441f0df6e06ef34f9ee8f3976c15b323605bae0cf51d",
  "id": 1
}

​
See Also