getFirstAvailableBlock RPC Method

Parameters

This method does not accept any parameters

Returns

result

An integer slot of the lowest confirmed block as u64 (64-bit unsigned integer) integer

Request

curl https://docs-demo.solana-mainnet.quiknode.pro/ \
  -X POST \
  -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","id":1, "method":"getFirstAvailableBlock"}'

require "uri"
require "json"
require "net/http"

url = URI("https://docs-demo.solana-mainnet.quiknode.pro/")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = "application/json"
request.body = JSON.dump({
  "jsonrpc": "2.0",
  "id": 1,
  "method": "getFirstAvailableBlock"
})

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

import { createSolanaRpc } from "@solana/kit";

(async () => {
  const solanaRpc = createSolanaRpc("https://docs-demo.solana-mainnet.quiknode.pro/");
  
  try {
    const firstAvailableBlock = await solanaRpc.getFirstAvailableBlock().send();
    console.log(Number(firstAvailableBlock));
  } catch (error) {
    console.error("Error fetching first available block:", error);
  }
})();

const web3 = require("@solana/web3.js");
(async () => {
  const solana = new web3.Connection("https://docs-demo.solana-mainnet.quiknode.pro/");
  console.log(await solana.getFirstAvailableBlock());
})();

from solana.rpc.api import Client
solana_client = Client("https://docs-demo.solana-mainnet.quiknode.pro/")
print(solana_client.get_first_available_block())

use reqwest::header;
use reqwest::Client;
use std::error::Error;

#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
    let mut headers = header::HeaderMap::new();
    headers.insert("Content-Type", "application/json".parse().unwrap());

    let client = Client::new();
    let json_data = r#"
    {
        "jsonrpc": "2.0",
        "id": 1,
        "method": "getFirstAvailableBlock"
    }
    "#;
    let response = client
        .post("https://docs-demo.solana-mainnet.quiknode.pro/")
        .headers(headers)
        .body(json_data)
        .send()
        .await?; 

    let body = response.text().await?;
    println!("{}", body);

    Ok(())
}

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": 0
}

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