curl --request POST \
  --url https://sigmachat.org/api/v1/boards/{boardId}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "content": "<string>",
  "embeds": [
    {
      "title": "<string>",
      "description": "<string>",
      "url": "<string>",
      "color": "<string>",
      "image": {
        "url": "<string>"
      },
      "fields": [
        {
          "name": "<string>",
          "value": "<string>",
          "inline": true
        }
      ]
    }
  ],
  "replyTo": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

import requests

url = "https://sigmachat.org/api/v1/boards/{boardId}/messages"

payload = {
    "content": "<string>",
    "embeds": [
        {
            "title": "<string>",
            "description": "<string>",
            "url": "<string>",
            "color": "<string>",
            "image": { "url": "<string>" },
            "fields": [
                {
                    "name": "<string>",
                    "value": "<string>",
                    "inline": True
                }
            ]
        }
    ],
    "replyTo": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
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({
    content: '<string>',
    embeds: [
      {
        title: '<string>',
        description: '<string>',
        url: '<string>',
        color: '<string>',
        image: {url: '<string>'},
        fields: [{name: '<string>', value: '<string>', inline: true}]
      }
    ],
    replyTo: '3c90c3cc-0d44-4b50-8888-8dd25736052a'
  })
};

fetch('https://sigmachat.org/api/v1/boards/{boardId}/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://sigmachat.org/api/v1/boards/{boardId}/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([
    'content' => '<string>',
    'embeds' => [
        [
                'title' => '<string>',
                'description' => '<string>',
                'url' => '<string>',
                'color' => '<string>',
                'image' => [
                                'url' => '<string>'
                ],
                'fields' => [
                                [
                                                                'name' => '<string>',
                                                                'value' => '<string>',
                                                                'inline' => true
                                ]
                ]
        ]
    ],
    'replyTo' => '3c90c3cc-0d44-4b50-8888-8dd25736052a'
  ]),
  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://sigmachat.org/api/v1/boards/{boardId}/messages"

	payload := strings.NewReader("{\n  \"content\": \"<string>\",\n  \"embeds\": [\n    {\n      \"title\": \"<string>\",\n      \"description\": \"<string>\",\n      \"url\": \"<string>\",\n      \"color\": \"<string>\",\n      \"image\": {\n        \"url\": \"<string>\"\n      },\n      \"fields\": [\n        {\n          \"name\": \"<string>\",\n          \"value\": \"<string>\",\n          \"inline\": true\n        }\n      ]\n    }\n  ],\n  \"replyTo\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\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://sigmachat.org/api/v1/boards/{boardId}/messages")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"content\": \"<string>\",\n  \"embeds\": [\n    {\n      \"title\": \"<string>\",\n      \"description\": \"<string>\",\n      \"url\": \"<string>\",\n      \"color\": \"<string>\",\n      \"image\": {\n        \"url\": \"<string>\"\n      },\n      \"fields\": [\n        {\n          \"name\": \"<string>\",\n          \"value\": \"<string>\",\n          \"inline\": true\n        }\n      ]\n    }\n  ],\n  \"replyTo\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://sigmachat.org/api/v1/boards/{boardId}/messages")

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  \"content\": \"<string>\",\n  \"embeds\": [\n    {\n      \"title\": \"<string>\",\n      \"description\": \"<string>\",\n      \"url\": \"<string>\",\n      \"color\": \"<string>\",\n      \"image\": {\n        \"url\": \"<string>\"\n      },\n      \"fields\": [\n        {\n          \"name\": \"<string>\",\n          \"value\": \"<string>\",\n          \"inline\": true\n        }\n      ]\n    }\n  ],\n  \"replyTo\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n}"

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