Simulate transaction

POST

https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Simulates a transaction without committing it.

gRPC method: sui.rpc.v2.TransactionExecutionService.SimulateTransaction (unary).

This is a gRPC method (HTTP/2, Protocol Buffers), not a REST endpoint. The request and response bodies below are shown in the proto3 JSON form that tools such as grpcurl and Postman accept and print. Pass your NOWNodes API key as the api-key gRPC metadata header. Proto files: sui/rpc/v2/transaction_execution_service.proto.

Example grpcurl request:

Copied!

grpcurl \
  -insecure \
  -H 'api-key: YOUR_API_KEY' \
  -emit-defaults \
  -proto './sui-apis-grpc/proto/sui/rpc/v2/transaction_execution_service.proto' \
  -import-path './sui-apis-grpc/proto' \
  -d '{"transaction": {}, "checks": "ENABLED", "doGasSelection": true}' \
  'sui-grpc.nownodes.io' \
  sui.rpc.v2.TransactionExecutionService.SimulateTransaction

Body

application/json

any

Response

200OK

Successful response.

default

gRPC error. The status code (e.g. UNAUTHENTICATED, INVALID_ARGUMENT, NOT_FOUND) is returned in the grpc-status trailer, details in grpc-message.

Simulate transaction

curl -X POST 'https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction' \
  -H 'Content-Type: application/json'

const response = await fetch('https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
});

const data = await response.json();

require 'net/http'
require 'json'

uri = URI('https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

import requests

response = requests.post('https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction', headers={'Content-Type': 'application/json'})
data = response.json()

const response = await fetch('https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
});

const data = await response.json();

const endpoint = "https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction";
const apiKey = "YOUR_API_KEY";

async function nownodesRequest(payload) {
  const response = await fetch(endpoint, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "api-key": apiKey,
    },
    body: JSON.stringify(payload),
  });

  return response.json();
}

const result = await nownodesRequest({});
console.log(result);

const response = await fetch('https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
});

const data = await response.json();

import requests

response = requests.post('https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction', headers={'Content-Type': 'application/json'})
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://sui-grpc.nownodes.io/sui.rpc.v2.TransactionExecutionService/SimulateTransaction')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

Request Body

{
  "transaction": {},
  "checks": "ENABLED",
  "doGasSelection": true
}