curl --request POST \
  --url https://api.contactbutton.com/v1/public/agents/{agent}/conversations/{conversation}/messages \
  --header 'Content-Type: application/json' \
  --header 'X-Conversation-Token: <x-conversation-token>' \
  --data '
{
  "body": "<string>",
  "suggested_reply_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "attachment_ids": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ]
}
'

import requests

url = "https://api.contactbutton.com/v1/public/agents/{agent}/conversations/{conversation}/messages"

payload = {
    "body": "<string>",
    "suggested_reply_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "attachment_ids": ["3c90c3cc-0d44-4b50-8888-8dd25736052a"]
}
headers = {
    "X-Conversation-Token": "<x-conversation-token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'X-Conversation-Token': '<x-conversation-token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    body: JSON.stringify('<string>'),
    suggested_reply_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    attachment_ids: ['3c90c3cc-0d44-4b50-8888-8dd25736052a']
  })
};

fetch('https://api.contactbutton.com/v1/public/agents/{agent}/conversations/{conversation}/messages', 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.contactbutton.com/v1/public/agents/{agent}/conversations/{conversation}/messages",
  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([
    'body' => '<string>',
    'suggested_reply_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'attachment_ids' => [
        '3c90c3cc-0d44-4b50-8888-8dd25736052a'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Conversation-Token: <x-conversation-token>"
  ],
]);

$response = curl_exec($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.contactbutton.com/v1/public/agents/{agent}/conversations/{conversation}/messages"

	payload := strings.NewReader("{\n  \"body\": \"<string>\",\n  \"suggested_reply_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"attachment_ids\": [\n    \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n  ]\n}")

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

	req.Header.Add("X-Conversation-Token", "<x-conversation-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.contactbutton.com/v1/public/agents/{agent}/conversations/{conversation}/messages")
  .header("X-Conversation-Token", "<x-conversation-token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"body\": \"<string>\",\n  \"suggested_reply_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"attachment_ids\": [\n    \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.contactbutton.com/v1/public/agents/{agent}/conversations/{conversation}/messages")

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

request = Net::HTTP::Post.new(url)
request["X-Conversation-Token"] = '<x-conversation-token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"body\": \"<string>\",\n  \"suggested_reply_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"attachment_ids\": [\n    \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n  ]\n}"

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

{
  "data": {
    "handoff": {
      "status": "unavailable",
      "available": true,
      "can_request": true,
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "trigger": "explicit_request",
      "reason": "<string>",
      "review_url": "<string>",
      "offered_at": "2023-11-07T05:31:56Z",
      "requested_at": "2023-11-07T05:31:56Z",
      "joined_at": "2023-11-07T05:31:56Z"
    },
    "lead_capture": {
      "version": 1,
      "timing": "required_before_chat",
      "fields": [
        "name"
      ],
      "contact_requirement": "either",
      "state": "ready",
      "input_schema": {},
      "default_phone_country": "<string>",
      "request_message": "<string>",
      "success_with_name": "<string>",
      "success_without_name": "<string>",
      "requires_consent": true,
      "consent_text": "<string>",
      "privacy_url": "<string>",
      "captured": true,
      "success_message": "<string>"
    },
    "follow_up": {
      "enabled": true,
      "opted_out": true,
      "status": "scheduled"
    },
    "analytics_events": [
      {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "name": "opened",
        "protocol": "web",
        "agent_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "capability_id": "<string>",
        "page_context": "<string>"
      }
    ],
    "protocol_contract": {
      "version": "2026-08-05",
      "protocol": "web",
      "states": {},
      "review": {
        "contactbutton_owned": true,
        "external_client_can_approve": true,
        "external_client_receives_otp": false,
        "material_actions_require_verification": true
      }
    }
  },
  "meta": {
    "request_id": "<string>",
    "next_cursor": "<string>"
  }
}