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simulateBundle

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simulateBundle simulates the execution of an ordered bundle of Solana transactions exactly as they would run if landed back-to-back in a single block, and returns the per-transaction outcome — without submitting anything to the network. Use it to validate an MEV / atomic-arbitrage bundle (or any sequence of dependent transactions) before paying to send it with the bundle-submission methods.

Because the transactions are simulated in order against the same working state, later transactions in the bundle observe the account changes produced by earlier ones. This is the key difference from calling simulateTransaction on each transaction independently: a bundle that only succeeds atomically (for example, a swap that funds a later repay) can be validated as a whole.

This is a pro-tier-only method. It is rate-limited under the sol_sim_bundle category at 5 RPS (pro) / 15 RPS (business), with burst headroom of twice the sustained limit.

Parameters

This method takes no parameters.

Returns

simulateBundle return value
FieldType
resultobject

Examples

curl https://triport.io/sol \
  -X POST -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer <api-key>' \
  -d '{"id":1,"method":"simulateBundle","params":[],"jsonrpc":"2.0"}'
const res = await fetch("https://triport.io/sol", {
  method: "POST",
  headers: { "Content-Type": "application/json", Authorization: "Bearer <api-key>" },
  body: JSON.stringify({
  "id": 1,
  "method": "simulateBundle",
  "params": [],
  "jsonrpc": "2.0"
}),
});
const data = await res.json();
import requests
resp = requests.post(
    "https://triport.io/sol",
    headers={"Authorization": "Bearer <api-key>"},
    json={"id":1,"method":"simulateBundle","params":[],"jsonrpc":"2.0"},
)
print(resp.json())

Usage

  1. Transport: HTTP (JSON-RPC).
  2. Networks: mainnet, devnet, testnet.
  3. Credit cost: 5 per call.

FAQ

What does simulateBundle do?
Dry-runs an MEV bundle — an ordered list of Solana transactions — against the
How many credits does simulateBundle cost?
simulateBundle costs 5 credit(s) per call on Triport by default.
Is simulateBundle available over WebSocket?
simulateBundle is an HTTP JSON-RPC method.