send notifications via Cloudflare works with simple http request to telegram account.

README.md

1. get account id and bot token via https://t.me/BotFather and https://t.me/getmyid_bot
2. Fullfill SENDKEY MASTER_ID and TELEGRAM_BOT_TOKEN
3. Send notifications :

curl https://yourworker.address/your_sendkey_here.send?title=short_title&desp=long_content

telegram_notify.js

addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request));
})

const SENDKEY = 'your_sendkey_here';
const MASTER_ID = 'your_master_id_here';
const TELEGRAM_BOT_TOKEN = 'your_telegram_bot_token_here';

async function handleRequest(request) {
  const url = new URL(request.url);
  const pathname = url.pathname;
  const searchParams = new URLSearchParams(url.search);

  if (!pathname.endsWith(`/${SENDKEY}.send`)) {
    return new Response('Unauthorized', { status: 401 });
  }

  const title = searchParams.get('title');
  const desp = searchParams.get('desp');

  if (!title || !desp) {
    return new Response('Missing title or desp', { status: 400 });
  }

  // Escape special characters for MarkdownV2
  const escapeMarkdown = (text) => {
    return text.replace(/([*_[\]()~`>#+\-=|{}.!])/g, '\\$1');
  }

  const escapedTitle = escapeMarkdown(title);
  const escapedDesp = escapeMarkdown(desp);

  // Use MarkdownV2 to format the title in bold
  const message = `*${escapedTitle}*\n\n${escapedDesp}`;
  const telegramApiUrl = `https://api.telegram.org/bot${TELEGRAM_BOT_TOKEN}/sendMessage`;

  const telegramResponse = await fetch(telegramApiUrl, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      chat_id: MASTER_ID,
      text: message,
      parse_mode: 'MarkdownV2'
    })
  });

  if (telegramResponse.ok) {
    return new Response('Message sent successfully', { status: 200 });
  } else {
    const errorData = await telegramResponse.json();
    return new Response(`Failed to send message: ${errorData.description}`, { status: 500 });
  }
}

1. get account id and bot token via https://t.me/BotFather and https://t.me/getmyid_bot
2. Fullfill SENDKEY MASTER_ID and TELEGRAM_BOT_TOKEN
3. Send notifications :

curl https://yourworker.address/your_sendkey_here.send?title=short_title&desp=long_content