curl --request POST \
  --url https://your-instance.example.com/api/{session}/messages/send \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "chatId": "1234567890@s.whatsapp.net",
  "address": "San Francisco, CA",
  "base64": "<string>",
  "caption": "Check this out",
  "filename": "photo.jpg",
  "isForwarded": true,
  "latitude": 37.7749,
  "longitude": -122.4194,
  "mentions": [
    "<string>"
  ],
  "mimeType": "image/jpeg",
  "pollMultiSelect": true,
  "pollOptions": [
    "Red",
    "Blue",
    "Green"
  ],
  "pollTitle": "What's your favorite color?",
  "ptt": true,
  "text": "Hello, world!",
  "url": "https://example.com/image.jpg",
  "vcard": "<string>"
}
EOF

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    chatId: '1234567890@s.whatsapp.net',
    address: 'San Francisco, CA',
    base64: '<string>',
    caption: 'Check this out',
    filename: 'photo.jpg',
    isForwarded: true,
    latitude: 37.7749,
    longitude: -122.4194,
    mentions: ['<string>'],
    mimeType: 'image/jpeg',
    pollMultiSelect: true,
    pollOptions: ['Red', 'Blue', 'Green'],
    pollTitle: 'What\'s your favorite color?',
    ptt: true,
    text: 'Hello, world!',
    url: 'https://example.com/image.jpg',
    vcard: '<string>'
  })
};

fetch('https://your-instance.example.com/api/{session}/messages/send', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://your-instance.example.com/api/{session}/messages/send"

payload = {
    "chatId": "1234567890@s.whatsapp.net",
    "address": "San Francisco, CA",
    "base64": "<string>",
    "caption": "Check this out",
    "filename": "photo.jpg",
    "isForwarded": True,
    "latitude": 37.7749,
    "longitude": -122.4194,
    "mentions": ["<string>"],
    "mimeType": "image/jpeg",
    "pollMultiSelect": True,
    "pollOptions": ["Red", "Blue", "Green"],
    "pollTitle": "What's your favorite color?",
    "ptt": True,
    "text": "Hello, world!",
    "url": "https://example.com/image.jpg",
    "vcard": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

package main

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

func main() {

	url := "https://your-instance.example.com/api/{session}/messages/send"

	payload := strings.NewReader("{\n  \"chatId\": \"1234567890@s.whatsapp.net\",\n  \"address\": \"San Francisco, CA\",\n  \"base64\": \"<string>\",\n  \"caption\": \"Check this out\",\n  \"filename\": \"photo.jpg\",\n  \"isForwarded\": true,\n  \"latitude\": 37.7749,\n  \"longitude\": -122.4194,\n  \"mentions\": [\n    \"<string>\"\n  ],\n  \"mimeType\": \"image/jpeg\",\n  \"pollMultiSelect\": true,\n  \"pollOptions\": [\n    \"Red\",\n    \"Blue\",\n    \"Green\"\n  ],\n  \"pollTitle\": \"What's your favorite color?\",\n  \"ptt\": true,\n  \"text\": \"Hello, world!\",\n  \"url\": \"https://example.com/image.jpg\",\n  \"vcard\": \"<string>\"\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))

}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://your-instance.example.com/api/{session}/messages/send",
  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([
    'chatId' => '1234567890@s.whatsapp.net',
    'address' => 'San Francisco, CA',
    'base64' => '<string>',
    'caption' => 'Check this out',
    'filename' => 'photo.jpg',
    'isForwarded' => true,
    'latitude' => 37.7749,
    'longitude' => -122.4194,
    'mentions' => [
        '<string>'
    ],
    'mimeType' => 'image/jpeg',
    'pollMultiSelect' => true,
    'pollOptions' => [
        'Red',
        'Blue',
        'Green'
    ],
    'pollTitle' => 'What\'s your favorite color?',
    'ptt' => true,
    'text' => 'Hello, world!',
    'url' => 'https://example.com/image.jpg',
    'vcard' => '<string>'
  ]),
  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;
}

{
  "fromLid": "<string>",
  "fromPhoneNumber": "<string>",
  "id": "<string>",
  "mediaId": "<string>",
  "senderLid": "<string>",
  "senderPhoneNumber": "<string>",
  "status": "<string>",
  "timestamp": "<string>"
}

{
  "docs": "https://docs.polymorfa.com/api/messages/send",
  "error": "missing required field: chatId"
}

{
  "error": "missing or invalid API key"
}

{
  "error": "internal server error"
}

{
  "docs": "<string>",
  "error": "<string>"
}