getSlotLeaders

curl --request POST \
  --url https://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "getSlotLeaders",
  "params": [
    100,
    10
  ]
}
'

import requests

url = "https://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "getSlotLeaders",
    "params": [100, 10]
}
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: 'getSlotLeaders', params: [100, 10]})
};

fetch('https://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e', 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://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e",
  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' => 'getSlotLeaders',
    'params' => [
        100,
        10
    ]
  ]),
  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://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"getSlotLeaders\",\n  \"params\": [\n    100,\n    10\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://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"getSlotLeaders\",\n  \"params\": [\n    100,\n    10\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e")

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\": \"getSlotLeaders\",\n  \"params\": [\n    100,\n    10\n  ]\n}"

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

{
  "jsonrpc": "<string>",
  "id": 123,
  "result": [
    "<string>"
  ]
}

POST

2ef4e47bc937d6b758f7c582e8e82a1e

getSlotLeaders

curl --request POST \
  --url https://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "getSlotLeaders",
  "params": [
    100,
    10
  ]
}
'

import requests

url = "https://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "getSlotLeaders",
    "params": [100, 10]
}
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: 'getSlotLeaders', params: [100, 10]})
};

fetch('https://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e', 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://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e",
  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' => 'getSlotLeaders',
    'params' => [
        100,
        10
    ]
  ]),
  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://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"getSlotLeaders\",\n  \"params\": [\n    100,\n    10\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://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"getSlotLeaders\",\n  \"params\": [\n    100,\n    10\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://solana-mainnet.core.chainstack.com/2ef4e47bc937d6b758f7c582e8e82a1e")

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\": \"getSlotLeaders\",\n  \"params\": [\n    100,\n    10\n  ]\n}"

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

{
  "jsonrpc": "<string>",
  "id": 123,
  "result": [
    "<string>"
  ]
}

The Solana getSlotLeaders method returns the slot leaders for a given slot range. Each slot on Solana has a designated leader validator responsible for producing the block. This method returns the ordered list of validator identities assigned to produce blocks in the requested range.

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Parameters

startSlot (integer, required) — the start slot.
limit (integer, required) — the number of slot leaders to return (1–5000).

Response

result (array of strings) — an array of node identity public keys as base58 encoded strings, in order of the slot leaders for each slot in the requested range.

Use case

A common use case for getSlotLeaders is in transaction landing optimization. By knowing which validator is the upcoming leader, you can route transactions directly to that validator’s TPU port for faster inclusion. This is especially useful in latency-sensitive applications like trading bots and arbitrage.

Body

application/json

integer

default:1

jsonrpc

string

default:2.0

method

string

default:getSlotLeaders

params

array

Response

200 - application/json

Slot leaders

jsonrpc

string

integer

result

string[]

Last modified on October 23, 2026

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getSlotLeaders | Solana

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​Parameters

​Response

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Body

Response

Parameters

Response

Use case