cal.pub0.org/packages/app-store/telegram/config.json

{
  "/*": "Don't modify slug - If required, do it using cli edit command",
  "name": "Telegram",
  "slug": "telegram",
  "type": "telegram_video",
  "logo": "icon.svg",
  "url": "https://cal.com/",
  "variant": "conferencing",
  "categories": ["messaging"],
  "publisher": "Cal.com, Inc.",
  "email": "support@cal.com",
  "description": "Schedule a chat with your guests or have a Telegram Video call.",
  "__createdUsingCli": true,
  "appData": {
    "location": {
      "type": "integrations:telegram_video",
      "label": "Telegram",
      "linkType": "static",
      "organizerInputPlaceholder": "https://t.me/MyUsername",
      "urlRegExp": "^http(s)?:\\/\\/(www\\.)?t.me\\/[a-zA-Z0-9]*"
    }
  }
}