txpool_contentFrom

curl --request POST \
  --url https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "txpool_contentFrom",
  "params": [
    "0x5d20879655df3c1e04ab111af0009ad650e762f0"
  ]
}
'

import requests

url = "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "txpool_contentFrom",
    "params": ["0x5d20879655df3c1e04ab111af0009ad650e762f0"]
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    id: 1,
    jsonrpc: '2.0',
    method: 'txpool_contentFrom',
    params: ['0x5d20879655df3c1e04ab111af0009ad650e762f0']
  })
};

fetch('https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'id' => 1,
    'jsonrpc' => '2.0',
    'method' => 'txpool_contentFrom',
    'params' => [
        '0x5d20879655df3c1e04ab111af0009ad650e762f0'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"txpool_contentFrom\",\n  \"params\": [\n    \"0x5d20879655df3c1e04ab111af0009ad650e762f0\"\n  ]\n}")

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

	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"txpool_contentFrom\",\n  \"params\": [\n    \"0x5d20879655df3c1e04ab111af0009ad650e762f0\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"txpool_contentFrom\",\n  \"params\": [\n    \"0x5d20879655df3c1e04ab111af0009ad650e762f0\"\n  ]\n}"

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "pending": {},
    "queued": {}
  }
}

POST

txpool_contentFrom

curl --request POST \
  --url https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "txpool_contentFrom",
  "params": [
    "0x5d20879655df3c1e04ab111af0009ad650e762f0"
  ]
}
'

import requests

url = "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "txpool_contentFrom",
    "params": ["0x5d20879655df3c1e04ab111af0009ad650e762f0"]
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    id: 1,
    jsonrpc: '2.0',
    method: 'txpool_contentFrom',
    params: ['0x5d20879655df3c1e04ab111af0009ad650e762f0']
  })
};

fetch('https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'id' => 1,
    'jsonrpc' => '2.0',
    'method' => 'txpool_contentFrom',
    'params' => [
        '0x5d20879655df3c1e04ab111af0009ad650e762f0'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"txpool_contentFrom\",\n  \"params\": [\n    \"0x5d20879655df3c1e04ab111af0009ad650e762f0\"\n  ]\n}")

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

	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"txpool_contentFrom\",\n  \"params\": [\n    \"0x5d20879655df3c1e04ab111af0009ad650e762f0\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"txpool_contentFrom\",\n  \"params\": [\n    \"0x5d20879655df3c1e04ab111af0009ad650e762f0\"\n  ]\n}"

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "pending": {},
    "queued": {}
  }
}

Arc API method that returns the transactions in the node’s pool for one sender address. It is txpool_content narrowed to a single account, so the response stays small on a busy node.

Parameters

address — the sender address to filter the pool by.

Response

pending — the sender’s transactions that are ready for inclusion, keyed by nonce.
queued — the sender’s transactions held back by a nonce gap, keyed by nonce.

Arc produces a block roughly every 0.5 seconds, so a healthy sender’s transactions usually clear before you can observe them. An empty result means nothing was pending for that address at that moment.

`txpool_contentFrom` code examples

const { JsonRpcProvider } = require("ethers");

const provider = new JsonRpcProvider("CHAINSTACK_NODE_URL");

async function call() {
  const result = await provider.send("txpool_contentFrom", ["0x5d20879655df3c1e04ab111af0009ad650e762f0"]);
  console.log(result);
}

call();

from web3 import Web3

node_url = "CHAINSTACK_NODE_URL"
web3 = Web3(Web3.HTTPProvider(node_url))

result = web3.provider.make_request("txpool_contentFrom", ["0x5d20879655df3c1e04ab111af0009ad650e762f0"])
print(result)

curl -X POST "CHAINSTACK_NODE_URL" \
  -H "Content-Type: application/json" \
  --data '{
    "jsonrpc": "2.0",
    "method": "txpool_contentFrom",
    "params": ["0x5d20879655df3c1e04ab111af0009ad650e762f0"],
    "id": 1
  }'

Use case

When a user reports that a transaction is not landing, this answers the question directly for their address alone. If the transaction sits in queued rather than pending, the sender has a nonce gap and every later transaction stays parked until the missing nonce is filled.

Body

application/json

integer

default:1

jsonrpc

string

default:2.0

method

string

default:txpool_contentFrom

params

array

Response

200 - application/json

Returns the result of txpool_contentFrom.

jsonrpc

string

integer

result

object

Show child attributes

Last modified on August 3, 2026

txpool_content | Arc txpool_inspect | Arc

APIs introduction

Node APIs

Faucet API

Chainstack platform API

txpool_contentFrom | Arc

Parameters

Response

`txpool_contentFrom` code examples

Use case

Body

Response

​Parameters

​Response

​txpool_contentFrom code examples

​Use case

Body

Response

Parameters

Response

`txpool_contentFrom` code examples

Use case