Transactions

Learn how to sign and submit transactions on Aptos.

Sign and Submit Transaction


// Simple APT transfer
const payload = {
  type: 'entry_function_payload',
  function: '0x1::aptos_account::transfer',
  type_arguments: [],
  arguments: [
    '0x1234...', // Recipient address
    '100000000', // Amount in Octas (1 APT = 100000000 Octas)
  ],
}
 
const response = await provider.signAndSubmitTransaction(payload)
 
console.log('Transaction hash:', response.hash)

Sign Transaction (Without Submitting)


const payload = {
  type: 'entry_function_payload',
  function: '0x1::coin::transfer',
  type_arguments: ['0x1::aptos_coin::AptosCoin'],
  arguments: ['0x1234...', '100000000'],
}
 
const signedTxn = await provider.signTransaction(payload)
 
// Submit later using Aptos SDK
// const pendingTxn = await client.submitTransaction(signedTxn)

Sign Transaction V2 (BCS Serialized)

For advanced use cases with BCS-serialized transactions:


import { BCS } from 'aptos'
 
const rawTransaction = /* BCS serialized raw transaction */
 
const signedTxn = await provider.signTransactionV2({
  transaction: rawTransaction,
  transactionType: 'simple', // 'simple' or 'multi_agent'
  asFeePayer: false,
})

Transaction Options


const payload = {
  type: 'entry_function_payload',
  function: '0x1::aptos_account::transfer',
  type_arguments: [],
  arguments: ['0x1234...', '100000000'],
}
 
const options = {
  max_gas_amount: '10000',
  gas_unit_price: '100',
  expiration_timestamp_secs: Math.floor(Date.now() / 1000) + 600, // 10 min
}
 
const response = await provider.signAndSubmitTransaction(payload, options)

Smart Contract Interaction

Call View Function


// View functions don't require signing
const result = await client.view({
  function: '0x1::coin::balance',
  type_arguments: ['0x1::aptos_coin::AptosCoin'],
  arguments: [accountAddress],
})
 
console.log('Balance:', result[0])

Call Entry Function


// Mint NFT example
const payload = {
  type: 'entry_function_payload',
  function: '0x3::token::create_collection_script',
  type_arguments: [],
  arguments: [
    'My Collection',           // Collection name
    'Description',             // Description
    'https://example.com',     // URI
    '1000',                    // Maximum supply
    [false, false, false],     // Mutability config
  ],
}
 
const response = await provider.signAndSubmitTransaction(payload)

Multi-Agent Transactions

For transactions requiring multiple signers:


const signedTxn = await provider.signTransactionV2({
  transaction: rawTransaction,
  transactionType: 'multi_agent',
})

Fee Payer Transactions

Sign as a fee payer for sponsored transactions:


const signedTxn = await provider.signTransactionV2({
  transaction: rawTransaction,
  transactionType: 'simple',
  asFeePayer: true,
})