curl --request POST \
  --url https://api.reply.io/v3/sequences/{id}/steps/bulk \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
[
  {
    "type": "email",
    "delayInMinutes": 1,
    "variants": [
      {
        "id": 123,
        "subject": "<string>",
        "message": "<string>",
        "attachmentIds": [
          123
        ]
      }
    ],
    "parentId": 123,
    "ifConditionPositive": true
  }
]
'

import requests

url = "https://api.reply.io/v3/sequences/{id}/steps/bulk"

payload = [
    {
        "type": "email",
        "delayInMinutes": 1,
        "variants": [
            {
                "id": 123,
                "subject": "<string>",
                "message": "<string>",
                "attachmentIds": [123]
            }
        ],
        "parentId": 123,
        "ifConditionPositive": True
    }
]
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify([
    {
      type: 'email',
      delayInMinutes: 1,
      variants: [{id: 123, subject: '<string>', message: '<string>', attachmentIds: [123]}],
      parentId: 123,
      ifConditionPositive: true
    }
  ])
};

fetch('https://api.reply.io/v3/sequences/{id}/steps/bulk', 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://api.reply.io/v3/sequences/{id}/steps/bulk",
  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([
    [
        'type' => 'email',
        'delayInMinutes' => 1,
        'variants' => [
                [
                                'id' => 123,
                                'subject' => '<string>',
                                'message' => '<string>',
                                'attachmentIds' => [
                                                                123
                                ]
                ]
        ],
        'parentId' => 123,
        'ifConditionPositive' => true
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://api.reply.io/v3/sequences/{id}/steps/bulk"

	payload := strings.NewReader("[\n  {\n    \"type\": \"email\",\n    \"delayInMinutes\": 1,\n    \"variants\": [\n      {\n        \"id\": 123,\n        \"subject\": \"<string>\",\n        \"message\": \"<string>\",\n        \"attachmentIds\": [\n          123\n        ]\n      }\n    ],\n    \"parentId\": 123,\n    \"ifConditionPositive\": true\n  }\n]")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	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://api.reply.io/v3/sequences/{id}/steps/bulk")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("[\n  {\n    \"type\": \"email\",\n    \"delayInMinutes\": 1,\n    \"variants\": [\n      {\n        \"id\": 123,\n        \"subject\": \"<string>\",\n        \"message\": \"<string>\",\n        \"attachmentIds\": [\n          123\n        ]\n      }\n    ],\n    \"parentId\": 123,\n    \"ifConditionPositive\": true\n  }\n]")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.reply.io/v3/sequences/{id}/steps/bulk")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "[\n  {\n    \"type\": \"email\",\n    \"delayInMinutes\": 1,\n    \"variants\": [\n      {\n        \"id\": 123,\n        \"subject\": \"<string>\",\n        \"message\": \"<string>\",\n        \"attachmentIds\": [\n          123\n        ]\n      }\n    ],\n    \"parentId\": 123,\n    \"ifConditionPositive\": true\n  }\n]"

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