Encode submission

POST

/transactions/encode_submission

Test request

CURL *hnd = curl_easy_init();

curl_easy_setopt(hnd, CURLOPT_CUSTOMREQUEST, "POST");
curl_easy_setopt(hnd, CURLOPT_URL, "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission");

CURLcode ret = curl_easy_perform(hnd);

using System.Net.Http.Headers;
var client = new HttpClient();
var request = new HttpRequestMessage
{
    Method = HttpMethod.Post,
    RequestUri = new Uri("https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission"),
};
using (var response = await client.SendAsync(request))
{
    response.EnsureSuccessStatusCode();
    var body = await response.Content.ReadAsStringAsync();
    Console.WriteLine(body);
}

var client = new RestClient("https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission");
var request = new RestRequest(Method.POST);
IRestResponse response = client.Execute(request);

(require '[clj-http.client :as client])

(client/post "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission")

import 'package:http/http.dart' as http;

void main() async {
  final response = await http.post(Uri.parse('https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission'));
  print(response.body);
}

package main

import (
  "fmt"
  "io"
  "net/http"
)

func main() {
  url := "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission"

  req, _ := http.NewRequest("POST", url, nil)

  res, _ := http.DefaultClient.Do(req)

  defer res.Body.Close()
  body, _ := io.ReadAll(res.Body)

  fmt.Println(res)
  fmt.Println(string(body))

}

POST /v1/transactions/encode_submission HTTP/1.1
Host: api.mainnet.aptoslabs.com

AsyncHttpClient client = new DefaultAsyncHttpClient();
client.prepare("POST", "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission")
  .execute()
  .toCompletableFuture()
  .thenAccept(System.out::println)
  .join();

client.close();

HttpRequest request = HttpRequest.newBuilder()
    .uri(URI.create("https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission"))
    .method("POST", HttpRequest.BodyPublishers.noBody())
    .build();
HttpResponse<String> response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
System.out.println(response.body());

OkHttpClient client = new OkHttpClient();

Request request = new Request.Builder()
  .url("https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission")
  .post(null)
  .build();

Response response = client.newCall(request).execute();

HttpResponse<String> response = Unirest.post("https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission")
  .asString();

fetch('https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission', {
  method: 'POST'
})

import axios from 'axios';

const options = {
  method: 'POST',
  url: 'https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission'
};

try {
  const { data } = await axios.request(options);
  console.log(data);
} catch (error) {
  console.error(error);
}

import { ofetch } from 'ofetch'

ofetch('https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission', {
  method: 'POST'
})

const settings = {
  async: true,
  crossDomain: true,
  url: 'https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission',
  method: 'POST',
  headers: {}
};

$.ajax(settings).done(function (response) {
  console.log(response);
});

const data = null;

const xhr = new XMLHttpRequest();
xhr.withCredentials = true;

xhr.addEventListener('readystatechange', function () {
  if (this.readyState === this.DONE) {
    console.log(this.responseText);
  }
});

xhr.open('POST', 'https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission');

xhr.send(data);

val client = OkHttpClient()

val request = Request.Builder()
  .url("https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission")
  .post(null)
  .build()

val response = client.newCall(request).execute()

fetch('https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission', {
  method: 'POST'
})

const axios = require('axios').default;

const options = {
  method: 'POST',
  url: 'https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission'
};

try {
  const { data } = await axios.request(options);
  console.log(data);
} catch (error) {
  console.error(error);
}

import { ofetch } from 'ofetch'

ofetch('https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission', {
  method: 'POST'
})

import { request } from 'undici'

const { statusCode, body } = await request('https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission', {
  method: 'POST'
})

#import <Foundation/Foundation.h>

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission"]
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:10.0];
[request setHTTPMethod:@"POST"];

NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request
                                            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                                if (error) {
                                                    NSLog(@"%@", error);
                                                } else {
                                                    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
                                                    NSLog(@"%@", httpResponse);
                                                }
                                            }];
[dataTask resume];

open Cohttp_lwt_unix
open Cohttp
open Lwt

let uri = Uri.of_string "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission" in

Client.call `POST uri
>>= fun (res, body_stream) ->
  (* Do stuff with the result *)

$ch = curl_init("https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission");

curl_setopt($ch, CURLOPT_POST, true);

curl_exec($ch);

curl_close($ch);

$client = new GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission');

$response = Invoke-WebRequest -Uri 'https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission' -Method POST

$response = Invoke-RestMethod -Uri 'https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission' -Method POST

import http.client

conn = http.client.HTTPSConnection("api.mainnet.aptoslabs.com")

conn.request("POST", "/v1/transactions/encode_submission")

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))

requests.post(
    "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission"
)

httpx.post(
    "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission"
)

with httpx.AsyncClient() as client:
    await client.post(
        "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission"
    )

library(httr)

url <- "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission"

response <- VERB("POST", url, content_type("application/octet-stream"))

content(response, "text")

require 'uri'
require 'net/http'

url = URI("https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)

response = http.request(request)
puts response.read_body

let client = reqwest::Client::new();

let request = client.post("https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission");

let response = request.send().await?;

curl https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission \
  --request POST

wget --quiet \
  --method POST \
  --output-document \
  - https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission

http POST https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission

import Foundation

let request = NSMutableURLRequest(url: NSURL(string: "https://api.mainnet.aptoslabs.com/v1/transactions/encode_submission")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()

This endpoint accepts an EncodeSubmissionRequest, which internally is a UserTransactionRequestInner (and optionally secondary signers) encoded as JSON, validates the request format, and then returns that request encoded in BCS. The client can then use this to create a transaction signature to be used in a SubmitTransactionRequest, which it then passes to the /transactions POST endpoint.

To be clear, this endpoint makes it possible to submit transaction requests to the API from languages that do not have library support for BCS. If you are using an SDK that has BCS support, such as the official Rust, TypeScript, or Python SDKs, you do not need to use this endpoint.

To sign a message using the response from this endpoint:

• Decode the hex encoded string in the response to bytes.
• Sign the bytes to create the signature.
• Use that as the signature field in something like Ed25519Signature, which you then use to build a TransactionSignature.

Request Body ^required

application/json

Request to encode a submission

object

sender

required

A hex encoded 32 byte Aptos account address.

This is represented in a string as a 64 character hex string, sometimes shortened by stripping leading 0s, and adding a 0x.

For example, address 0x0000000000000000000000000000000000000000000000000000000000000001 is represented as 0x1.

string format: hex

0x88fbd33f54e1126269769780feb24480428179f552e2313fbe571b72e62a1ca1

sequence_number

required

A string containing a 64-bit unsigned integer.

We represent u64 values as a string to ensure compatibility with languages such as JavaScript that do not parse u64s in JSON natively.

string format: uint64

32425224034

max_gas_amount

required

A string containing a 64-bit unsigned integer.

We represent u64 values as a string to ensure compatibility with languages such as JavaScript that do not parse u64s in JSON natively.

string format: uint64

32425224034

gas_unit_price

required

A string containing a 64-bit unsigned integer.

We represent u64 values as a string to ensure compatibility with languages such as JavaScript that do not parse u64s in JSON natively.

string format: uint64

32425224034

expiration_timestamp_secs

required

A string containing a 64-bit unsigned integer.

We represent u64 values as a string to ensure compatibility with languages such as JavaScript that do not parse u64s in JSON natively.

string format: uint64

32425224034

payload

required

One of: discriminator: type

object

An enum of the possible transaction payloads

object

type

required

string

Allowed values: entry_function_payload

entry_function_payload

function

required

Entry function id is string representation of a entry function defined on-chain.

Format: {address}::{module name}::{function name}

Both module name and function name are case-sensitive.

string

0x1::aptos_coin::transfer

type_arguments

required

Type arguments of the function

Array<string>

arguments

required

Arguments of the function

Array

object

An enum of the possible transaction payloads

object

type

required

string

Allowed values: script_payload

script_payload

code

required

Move script bytecode

object

bytecode

required

All bytes (Vec) data is represented as hex-encoded string prefixed with 0x and fulfilled with two hex digits per byte.

Unlike the Address type, HexEncodedBytes will not trim any zeros.

string format: hex

0x88fbd33f54e1126269769780feb24480428179f552e2313fbe571b72e62a1ca1

abi

Move function

object

name

required

string

visibility

required

Move function visibility

string

Allowed values: private public friend

is_entry

required

Whether the function can be called as an entry function directly in a transaction

boolean

is_view

required

Whether the function is a view function or not

boolean

generic_type_params

required

Generic type params associated with the Move function

Array<object>

Move function generic type param

object

constraints

required

Move abilities tied to the generic type param and associated with the function that uses it

Array<string>

params

required

Parameters associated with the move function

Array<string>

return

required

Return type of the function

Array<string>

type_arguments

required

Type arguments of the function

Array<string>

arguments

required

Arguments of the function

Array

object

An enum of the possible transaction payloads

object

type

required

string

Allowed values: module_bundle_payload

module_bundle_payload

object

An enum of the possible transaction payloads

object

type

required

string

Allowed values: multisig_payload

multisig_payload

multisig_address

required

A hex encoded 32 byte Aptos account address.

This is represented in a string as a 64 character hex string, sometimes shortened by stripping leading 0s, and adding a 0x.

For example, address 0x0000000000000000000000000000000000000000000000000000000000000001 is represented as 0x1.

string format: hex

0x88fbd33f54e1126269769780feb24480428179f552e2313fbe571b72e62a1ca1

transaction_payload

One of: discriminator: type

object

object

type

required

string

Allowed values: entry_function_payload

entry_function_payload

function

required

Entry function id is string representation of a entry function defined on-chain.

Format: {address}::{module name}::{function name}

Both module name and function name are case-sensitive.

string

0x1::aptos_coin::transfer

type_arguments

required

Type arguments of the function

Array<string>

arguments

required

Arguments of the function

Array

replay_protection_nonce

A string containing a 64-bit unsigned integer.

We represent u64 values as a string to ensure compatibility with languages such as JavaScript that do not parse u64s in JSON natively.

string format: uint64

32425224034

secondary_signers

Secondary signer accounts of the request for Multi-agent

Array<string>

Responses

200

All bytes (Vec) data is represented as hex-encoded string prefixed with 0x and fulfilled with two hex digits per byte.

Unlike the Address type, HexEncodedBytes will not trim any zeros.

string format: hex

0x88fbd33f54e1126269769780feb24480428179f552e2313fbe571b72e62a1ca1

Array<integer>

Headers

X-APTOS-CHAIN-ID

required

integer format: uint8

Chain ID of the current chain

X-APTOS-LEDGER-VERSION

required

integer format: uint64

Current ledger version of the chain

X-APTOS-LEDGER-OLDEST-VERSION

required

integer format: uint64

Oldest non-pruned ledger version of the chain

X-APTOS-LEDGER-TIMESTAMPUSEC

required

integer format: uint64

Current timestamp of the chain

X-APTOS-EPOCH

required

integer format: uint64

Current epoch of the chain

X-APTOS-BLOCK-HEIGHT

required

integer format: uint64

Current block height of the chain

X-APTOS-OLDEST-BLOCK-HEIGHT

required

integer format: uint64

Oldest non-pruned block height of the chain

X-APTOS-GAS-USED

integer format: uint64

The cost of the call in terms of gas

X-APTOS-CURSOR

string

Cursor to be used for endpoints that support cursor-based pagination. Pass this to the start field of the endpoint on the next call to get the next page of results.

400

application/json

This is the generic struct we use for all API errors, it contains a string message and an Aptos API specific error code.

object

message

required

A message describing the error

string

error_code

required

These codes provide more granular error information beyond just the HTTP status code of the response.

string

Allowed values: account_not_found resource_not_found module_not_found struct_field_not_found version_not_found transaction_not_found table_item_not_found block_not_found state_value_not_found version_pruned block_pruned invalid_input invalid_transaction_update sequence_number_too_old vm_error rejected_by_filter health_check_failed mempool_is_full internal_error web_framework_error bcs_not_supported api_disabled

vm_error_code

A code providing VM error details when submitting transactions to the VM

integer format: uint64

Headers

X-APTOS-CHAIN-ID

integer format: uint8

Chain ID of the current chain

X-APTOS-LEDGER-VERSION

integer format: uint64

Current ledger version of the chain

X-APTOS-LEDGER-OLDEST-VERSION

integer format: uint64

Oldest non-pruned ledger version of the chain

X-APTOS-LEDGER-TIMESTAMPUSEC

integer format: uint64

Current timestamp of the chain

X-APTOS-EPOCH

integer format: uint64

Current epoch of the chain

X-APTOS-BLOCK-HEIGHT

integer format: uint64

Current block height of the chain

X-APTOS-OLDEST-BLOCK-HEIGHT

integer format: uint64

Oldest non-pruned block height of the chain

X-APTOS-GAS-USED

integer format: uint64

The cost of the call in terms of gas

403

application/json

This is the generic struct we use for all API errors, it contains a string message and an Aptos API specific error code.

object

message

required

A message describing the error

string

error_code

required

These codes provide more granular error information beyond just the HTTP status code of the response.

string

Allowed values: account_not_found resource_not_found module_not_found struct_field_not_found version_not_found transaction_not_found table_item_not_found block_not_found state_value_not_found version_pruned block_pruned invalid_input invalid_transaction_update sequence_number_too_old vm_error rejected_by_filter health_check_failed mempool_is_full internal_error web_framework_error bcs_not_supported api_disabled

vm_error_code

A code providing VM error details when submitting transactions to the VM

integer format: uint64

Headers

X-APTOS-CHAIN-ID

integer format: uint8

Chain ID of the current chain

X-APTOS-LEDGER-VERSION

integer format: uint64

Current ledger version of the chain

X-APTOS-LEDGER-OLDEST-VERSION

integer format: uint64

Oldest non-pruned ledger version of the chain

X-APTOS-LEDGER-TIMESTAMPUSEC

integer format: uint64

Current timestamp of the chain

X-APTOS-EPOCH

integer format: uint64

Current epoch of the chain

X-APTOS-BLOCK-HEIGHT

integer format: uint64

Current block height of the chain

X-APTOS-OLDEST-BLOCK-HEIGHT

integer format: uint64

Oldest non-pruned block height of the chain

X-APTOS-GAS-USED

integer format: uint64

The cost of the call in terms of gas

500

application/json

This is the generic struct we use for all API errors, it contains a string message and an Aptos API specific error code.

object

message

required

A message describing the error

string

error_code

required

These codes provide more granular error information beyond just the HTTP status code of the response.

string

Allowed values: account_not_found resource_not_found module_not_found struct_field_not_found version_not_found transaction_not_found table_item_not_found block_not_found state_value_not_found version_pruned block_pruned invalid_input invalid_transaction_update sequence_number_too_old vm_error rejected_by_filter health_check_failed mempool_is_full internal_error web_framework_error bcs_not_supported api_disabled

vm_error_code

A code providing VM error details when submitting transactions to the VM

integer format: uint64

Headers

X-APTOS-CHAIN-ID

integer format: uint8

Chain ID of the current chain

X-APTOS-LEDGER-VERSION

integer format: uint64

Current ledger version of the chain

X-APTOS-LEDGER-OLDEST-VERSION

integer format: uint64

Oldest non-pruned ledger version of the chain

X-APTOS-LEDGER-TIMESTAMPUSEC

integer format: uint64

Current timestamp of the chain

X-APTOS-EPOCH

integer format: uint64

Current epoch of the chain

X-APTOS-BLOCK-HEIGHT

integer format: uint64

Current block height of the chain

X-APTOS-OLDEST-BLOCK-HEIGHT

integer format: uint64

Oldest non-pruned block height of the chain

X-APTOS-GAS-USED

integer format: uint64

The cost of the call in terms of gas

503

application/json

This is the generic struct we use for all API errors, it contains a string message and an Aptos API specific error code.

object

message

required

A message describing the error

string

error_code

required

These codes provide more granular error information beyond just the HTTP status code of the response.

string

Allowed values: account_not_found resource_not_found module_not_found struct_field_not_found version_not_found transaction_not_found table_item_not_found block_not_found state_value_not_found version_pruned block_pruned invalid_input invalid_transaction_update sequence_number_too_old vm_error rejected_by_filter health_check_failed mempool_is_full internal_error web_framework_error bcs_not_supported api_disabled

vm_error_code

A code providing VM error details when submitting transactions to the VM

integer format: uint64

Headers

X-APTOS-CHAIN-ID

integer format: uint8

Chain ID of the current chain

X-APTOS-LEDGER-VERSION

integer format: uint64

Current ledger version of the chain

X-APTOS-LEDGER-OLDEST-VERSION

integer format: uint64

Oldest non-pruned ledger version of the chain

X-APTOS-LEDGER-TIMESTAMPUSEC

integer format: uint64

Current timestamp of the chain

X-APTOS-EPOCH

integer format: uint64

Current epoch of the chain

X-APTOS-BLOCK-HEIGHT

integer format: uint64

Current block height of the chain

X-APTOS-OLDEST-BLOCK-HEIGHT

integer format: uint64

Oldest non-pruned block height of the chain

X-APTOS-GAS-USED

integer format: uint64

The cost of the call in terms of gas