curl --request POST \
  --url https://release0.com/api/v1/agents/{agentId}/preview/start \
  --header 'Content-Type: application/json' \
  --data '
{
  "isStreamEnabled": false,
  "message": {
    "type": "text",
    "text": "<string>",
    "attachedFileUrls": [
      "<string>"
    ]
  },
  "isOnlyRegistering": false,
  "agent": "<unknown>",
  "startFrom": {
    "type": "group",
    "groupId": "<string>"
  },
  "initialContext": {
    "First name": "John",
    "Email": "john@gmail.com"
  },
  "sessionId": "<string>",
  "password": "<string>",
  "textBubbleContentFormat": "richText"
}
'

import requests

url = "https://release0.com/api/v1/agents/{agentId}/preview/start"

payload = {
    "isStreamEnabled": False,
    "message": {
        "type": "text",
        "text": "<string>",
        "attachedFileUrls": ["<string>"]
    },
    "isOnlyRegistering": False,
    "agent": "<unknown>",
    "startFrom": {
        "type": "group",
        "groupId": "<string>"
    },
    "initialContext": {
        "First name": "John",
        "Email": "john@gmail.com"
    },
    "sessionId": "<string>",
    "password": "<string>",
    "textBubbleContentFormat": "richText"
}
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({
    isStreamEnabled: false,
    message: {type: 'text', text: '<string>', attachedFileUrls: ['<string>']},
    isOnlyRegistering: false,
    agent: '<unknown>',
    startFrom: {type: 'group', groupId: '<string>'},
    initialContext: {'First name': 'John', Email: 'john@gmail.com'},
    sessionId: '<string>',
    password: '<string>',
    textBubbleContentFormat: 'richText'
  })
};

fetch('https://release0.com/api/v1/agents/{agentId}/preview/start', 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://release0.com/api/v1/agents/{agentId}/preview/start",
  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([
    'isStreamEnabled' => false,
    'message' => [
        'type' => 'text',
        'text' => '<string>',
        'attachedFileUrls' => [
                '<string>'
        ]
    ],
    'isOnlyRegistering' => false,
    'agent' => '<unknown>',
    'startFrom' => [
        'type' => 'group',
        'groupId' => '<string>'
    ],
    'initialContext' => [
        'First name' => 'John',
        'Email' => 'john@gmail.com'
    ],
    'sessionId' => '<string>',
    'password' => '<string>',
    'textBubbleContentFormat' => 'richText'
  ]),
  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://release0.com/api/v1/agents/{agentId}/preview/start"

	payload := strings.NewReader("{\n  \"isStreamEnabled\": false,\n  \"message\": {\n    \"type\": \"text\",\n    \"text\": \"<string>\",\n    \"attachedFileUrls\": [\n      \"<string>\"\n    ]\n  },\n  \"isOnlyRegistering\": false,\n  \"agent\": \"<unknown>\",\n  \"startFrom\": {\n    \"type\": \"group\",\n    \"groupId\": \"<string>\"\n  },\n  \"initialContext\": {\n    \"First name\": \"John\",\n    \"Email\": \"john@gmail.com\"\n  },\n  \"sessionId\": \"<string>\",\n  \"password\": \"<string>\",\n  \"textBubbleContentFormat\": \"richText\"\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://release0.com/api/v1/agents/{agentId}/preview/start")
  .header("Content-Type", "application/json")
  .body("{\n  \"isStreamEnabled\": false,\n  \"message\": {\n    \"type\": \"text\",\n    \"text\": \"<string>\",\n    \"attachedFileUrls\": [\n      \"<string>\"\n    ]\n  },\n  \"isOnlyRegistering\": false,\n  \"agent\": \"<unknown>\",\n  \"startFrom\": {\n    \"type\": \"group\",\n    \"groupId\": \"<string>\"\n  },\n  \"initialContext\": {\n    \"First name\": \"John\",\n    \"Email\": \"john@gmail.com\"\n  },\n  \"sessionId\": \"<string>\",\n  \"password\": \"<string>\",\n  \"textBubbleContentFormat\": \"richText\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://release0.com/api/v1/agents/{agentId}/preview/start")

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  \"isStreamEnabled\": false,\n  \"message\": {\n    \"type\": \"text\",\n    \"text\": \"<string>\",\n    \"attachedFileUrls\": [\n      \"<string>\"\n    ]\n  },\n  \"isOnlyRegistering\": false,\n  \"agent\": \"<unknown>\",\n  \"startFrom\": {\n    \"type\": \"group\",\n    \"groupId\": \"<string>\"\n  },\n  \"initialContext\": {\n    \"First name\": \"John\",\n    \"Email\": \"john@gmail.com\"\n  },\n  \"sessionId\": \"<string>\",\n  \"password\": \"<string>\",\n  \"textBubbleContentFormat\": \"richText\"\n}"

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

{
  "code": "BAD_REQUEST",
  "message": "Invalid input data",
  "issues": []
}

{
  "code": "INTERNAL_SERVER_ERROR",
  "message": "Internal server error",
  "issues": []
}