/node/transaction-pool - Polkadot

Example code for the /node/transaction-pool REST method. Complete guide on how to use /node/transaction-pool REST in GetBlock Web3 documentation.

This endpoint returns the extrinsics currently in the node's transaction pool.

On GetBlock's unified endpoint, Asset Hub is the default network. To call this endpoint against the Relaychain, add an /rc prefix to the path (for example, /rc/node/transaction-pool).

Endpoint

GET /node/transaction-pool

Query Parameters

Parameter	Type	Required	Description
includeFee	boolean	No	Include the partial fee for each pooled extrinsic

Request

cURL

curl --location 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/node/transaction-pool'

JavaScript

example.js

const response = await fetch('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/node/transaction-pool');
const data = await response.json();
console.log(data);

Python

example.py

import requests

response = requests.get('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/node/transaction-pool')
print(response.json())

Response

{
  "pool": [
    {
      "hash": "0x8e6c1c...",
      "encodedExtrinsic": "0x4d0284..."
    }
  ]
}

Response Fields

Field	Type	Description
pool	array	Pending extrinsics in the pool
pool[].hash	string	Extrinsic hash
pool[].encodedExtrinsic	string	SCALE-encoded extrinsic, hex-encoded

Use Cases

• Mempool Views: Inspect pending transactions

• Fee Markets: Observe pending demand for block space

• Resubmission: Detect whether a transaction is still pending

• Monitoring: Track pool depth