curl --request POST \
  --url https://api.sandbox.asapp.com/conversation/v1/conversations/{conversationId}/messages/batch \
  --header 'Content-Type: application/json' \
  --header 'asapp-api-id: <api-key>' \
  --header 'asapp-api-secret: <api-key>' \
  --data '
{
  "messages": [
    {
      "text": "Hello, I would like to upgrade my internet plan to GOLD.",
      "sender": {
        "role": "customer",
        "externalId": "customer-xyz"
      },
      "timestamp": "2021-11-23T12:13:14.555Z"
    },
    {
      "text": "Let me help you with that",
      "sender": {
        "role": "agent",
        "externalId": "agent-111"
      },
      "timestamp": "2021-11-23T12:13:16.666Z"
    }
  ]
}
'

import requests

url = "https://api.sandbox.asapp.com/conversation/v1/conversations/{conversationId}/messages/batch"

payload = { "messages": [
        {
            "text": "Hello, I would like to upgrade my internet plan to GOLD.",
            "sender": {
                "role": "customer",
                "externalId": "customer-xyz"
            },
            "timestamp": "2021-11-23T12:13:14.555Z"
        },
        {
            "text": "Let me help you with that",
            "sender": {
                "role": "agent",
                "externalId": "agent-111"
            },
            "timestamp": "2021-11-23T12:13:16.666Z"
        }
    ] }
headers = {
    "asapp-api-id": "<api-key>",
    "asapp-api-secret": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'asapp-api-id': '<api-key>',
    'asapp-api-secret': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    messages: [
      {
        text: 'Hello, I would like to upgrade my internet plan to GOLD.',
        sender: {role: 'customer', externalId: 'customer-xyz'},
        timestamp: '2021-11-23T12:13:14.555Z'
      },
      {
        text: 'Let me help you with that',
        sender: {role: 'agent', externalId: 'agent-111'},
        timestamp: '2021-11-23T12:13:16.666Z'
      }
    ]
  })
};

fetch('https://api.sandbox.asapp.com/conversation/v1/conversations/{conversationId}/messages/batch', 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.sandbox.asapp.com/conversation/v1/conversations/{conversationId}/messages/batch",
  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([
    'messages' => [
        [
                'text' => 'Hello, I would like to upgrade my internet plan to GOLD.',
                'sender' => [
                                'role' => 'customer',
                                'externalId' => 'customer-xyz'
                ],
                'timestamp' => '2021-11-23T12:13:14.555Z'
        ],
        [
                'text' => 'Let me help you with that',
                'sender' => [
                                'role' => 'agent',
                                'externalId' => 'agent-111'
                ],
                'timestamp' => '2021-11-23T12:13:16.666Z'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "asapp-api-id: <api-key>",
    "asapp-api-secret: <api-key>"
  ],
]);

$response = curl_exec($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.sandbox.asapp.com/conversation/v1/conversations/{conversationId}/messages/batch"

	payload := strings.NewReader("{\n  \"messages\": [\n    {\n      \"text\": \"Hello, I would like to upgrade my internet plan to GOLD.\",\n      \"sender\": {\n        \"role\": \"customer\",\n        \"externalId\": \"customer-xyz\"\n      },\n      \"timestamp\": \"2021-11-23T12:13:14.555Z\"\n    },\n    {\n      \"text\": \"Let me help you with that\",\n      \"sender\": {\n        \"role\": \"agent\",\n        \"externalId\": \"agent-111\"\n      },\n      \"timestamp\": \"2021-11-23T12:13:16.666Z\"\n    }\n  ]\n}")

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

	req.Header.Add("asapp-api-id", "<api-key>")
	req.Header.Add("asapp-api-secret", "<api-key>")
	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.sandbox.asapp.com/conversation/v1/conversations/{conversationId}/messages/batch")
  .header("asapp-api-id", "<api-key>")
  .header("asapp-api-secret", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"messages\": [\n    {\n      \"text\": \"Hello, I would like to upgrade my internet plan to GOLD.\",\n      \"sender\": {\n        \"role\": \"customer\",\n        \"externalId\": \"customer-xyz\"\n      },\n      \"timestamp\": \"2021-11-23T12:13:14.555Z\"\n    },\n    {\n      \"text\": \"Let me help you with that\",\n      \"sender\": {\n        \"role\": \"agent\",\n        \"externalId\": \"agent-111\"\n      },\n      \"timestamp\": \"2021-11-23T12:13:16.666Z\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sandbox.asapp.com/conversation/v1/conversations/{conversationId}/messages/batch")

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

request = Net::HTTP::Post.new(url)
request["asapp-api-id"] = '<api-key>'
request["asapp-api-secret"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"messages\": [\n    {\n      \"text\": \"Hello, I would like to upgrade my internet plan to GOLD.\",\n      \"sender\": {\n        \"role\": \"customer\",\n        \"externalId\": \"customer-xyz\"\n      },\n      \"timestamp\": \"2021-11-23T12:13:14.555Z\"\n    },\n    {\n      \"text\": \"Let me help you with that\",\n      \"sender\": {\n        \"role\": \"agent\",\n        \"externalId\": \"agent-111\"\n      },\n      \"timestamp\": \"2021-11-23T12:13:16.666Z\"\n    }\n  ]\n}"

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

{}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "400-01",
    "message": "Bad request"
  }
}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "401-01",
    "message": "Unauthorized"
  }
}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "403-01",
    "message": "Forbidden Response"
  }
}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "404-01",
    "message": "Not Found"
  }
}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "409-01",
    "message": "Conflict"
  }
}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "413-01",
    "message": "Request Entity Too Large"
  }
}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "422-01",
    "message": "Unprocessable Entity"
  }
}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "429-01",
    "message": "Too Many Requests"
  }
}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "503-01",
    "message": "Service Unavailable"
  }
}

{
  "error": {
    "requestId": "8e033668-9f1a-11ec-b909-0242ac120002",
    "code": "500-01",
    "message": "Internal server error"
  }
}