getmempooldescendants - Litecoin

Example code for the getmempooldescendants JSON-RPC method. Complete guide on how to use getmempooldescendants JSON-RPC in GetBlock Web3 documentation.

This method returns all in-mempool descendants, if the txid is in the mempool.

Parameters

Parameter

Type

Description

txid

string

The transaction id (must be in mempool).

verbose

boolean

Optional. True for JSON object. Default=false.

Request

cURL

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "getmempooldescendants",
    "params": ["txid123...", false],
    "id": "getblock.io"
}'

Axios (JavaScript)

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "getmempooldescendants",
    "params": ["txid123...", false],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data)))
    .catch(error => console.log(error));

Python (requests)

import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "getmempooldescendants",
    "params": ["txid123...", false],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

Rust (reqwest)

use reqwest::header;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::new();
    
    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header(header::CONTENT_TYPE, "application/json")
        .body(r#"{
            "jsonrpc": "2.0",
            "method": "getmempooldescendants",
            "params": ["txid123...", false],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}

Response

Response (JSON)

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": ["descendant_txid1", "descendant_txid2"]
}

Response Parameters

Field

Type

Description

result

array

Array of descendant transaction IDs.

Use Case

The getmempooldescendants method is essential for:

Dependency tracking
Transaction impact analysis
Chain analysis
RBF considerations

Error Handling

Status Code

Error Message

Cause

403

Forbidden

Missing or invalid ACCESS-TOKEN.

Integration Notes

The getmempooldescendants method helps developers build robust applications that interact with the Litecoin blockchain.

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