curl --request GET \
  --url 'https://beaconcha.in/api/v1/epoch/{epoch}/slots?apikey='

import requests

url = "https://beaconcha.in/api/v1/epoch/{epoch}/slots?apikey="

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://beaconcha.in/api/v1/epoch/{epoch}/slots?apikey=', 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://beaconcha.in/api/v1/epoch/{epoch}/slots?apikey=",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://beaconcha.in/api/v1/epoch/{epoch}/slots?apikey="

	req, _ := http.NewRequest("GET", url, nil)

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://beaconcha.in/api/v1/epoch/{epoch}/slots?apikey=")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://beaconcha.in/api/v1/epoch/{epoch}/slots?apikey=")

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

request = Net::HTTP::Get.new(url)

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

{
  "status": "OK",
  "data": [
    {
      "attestationscount": 8,
      "attesterslashingscount": 0,
      "blockroot": "0xeb64c069b979ef8eed41993ec0563f1ed0e935b95fcbe9ed26de4c904c94aeb3",
      "depositscount": 10,
      "epoch": 398479,
      "eth1data_blockhash": "0xeb64c069b979ef8eed41993ec0563f1ed0e935b95fcbe9ed26de4c904c94aeb3",
      "eth1data_depositcount": 2045305,
      "eth1data_depositroot": "0x2ebc563cabdbbacbc56f0de1d2d1c2d5315a4b071fcd8566aabbf0a45161c64e",
      "exec_base_fee_per_gas": 680634007,
      "exec_block_hash": "0x1f97b8eb2444d4fcdfd8dade8a9f8630860acca3ce694f800881fab642eace6c",
      "exec_block_number": 23525866,
      "exec_extra_data": "0x546974616e2028746974616e6275696c6465722e78797a29",
      "exec_fee_recipient": "0x4838b106fce9647bdf1e7877bf73ce8b0bad5f97",
      "exec_gas_limit": 23525866,
      "exec_gas_used": 23525866,
      "exec_logs_bloom": "0x54a8a16a45119f9fd52558acccb035c9154b9b509664b87dcfdd129d7499b0a1249dd137bfed0146da934b6b47ea75dc77d1c67bac137b0914da37d4686c97ceba768dfa4ed0fcb8ed34d1ab91e99aa164663e32e7fe79386b627cba1e9cde870b71a9eabb4",
      "exec_parent_hash": "0x3f9eeb7bbcfa68b70ed5b15fe0476c0cd594a025032ad6522c2f087922393b3e",
      "exec_random": "0x2a9ef3da82054fe160d54973c8f7ce9482ff1ef0c09262d9a86e3641d1d52131",
      "exec_receipts_root": "0xbc1799c451b10b1689e540333ca2f9dac9a86a9654075a0d141385d6bbb8ceed",
      "exec_state_root": "0x8e251e0dd4aaf308b5c899c8f659e6de984aad11f4df85468d6cbf9edfa7ce48",
      "exec_timestamp": 1759839959,
      "exec_transactions_count": 3,
      "graffiti": "0x544b373536390000000000000000000000000000000000000000000000000000",
      "graffiti_text": "TK7569",
      "parentroot": "0x36ed53a94a32b494b3a26fbbb56c2ce2af9cf657a7c3975da96faf0fba66c2c2",
      "proposer": 1098947,
      "proposerslashingscount": 0,
      "randaoreveal": "0x8add195bc76c9cd723730cd4dae3098663f3e0257a543ed8ca4273471e1983c8c937ee37b95c7c30c5e91bf6a19b81a60f11bbb41014e45674e57566dba923b6c26b17911f811af04b28dce9020bb54b6f8de38bb63b8a0f9c4902357700e85b",
      "signature": "0xab6b6d826c14b6141e3406c5227ead15b133993195e96edc05fdeba998d0e0fd96e4ec5f47f6c9eec1558a59042c03d1016e679faf7300bc14737c7178c5cc01b2ea5f345e13cc2e29eeeefaf18cdcde6c0a99d80923ecf8ff8619a4d2511f6e",
      "slot": 12751457,
      "stateroot": "0xb4373fdde2b7e43692937e6982a853b747ae3ec2ec4721bee538f4770229415d",
      "status": "1",
      "syncaggregate_bits": "0xaf6d5ffa3fddbdd7a82286f7dd17b87bfdbbbf17733beda97eef74bfffdeff7fdf7dd1effdf0d3ffbf23feb97bf463febfb0edcceef65fea77fdbdcfb50edbf1",
      "syncaggregate_participation": 0.990234375,
      "syncaggregate_signature": "0xaa7c2f8db87e82ed4e45e0c328918f0f1ca88d6bdc1e20933816b22e3965099d2fcaa6960e76959921c0d6b5b7a73d1203e3bceaf2a23436f9eedc072d924b4270f21c57356ca99813e63b44dd4f363abc49466114b05736ef925d9330f93dd5",
      "voluntaryexitscount": 0,
      "withdrawalcount": 16
    }
  ]
}

{
  "status": "ERROR: invalid epoch parameter",
  "data": null
}

{
  "status": "ERROR: internal server error",
  "data": null
}