Add it to ChatGPT

On chatgpt.com, open Settings › Security and login and turn on Developer mode.
Go to ChatGPT plugins (opens in a new tab) and press +.
Name it Notifications, paste this address under Connection, and press Create.
Server address
https://agentnotifications.app/mcp
On the page that opens, sign in, press Connect to add Telegram, then press Allow.
In a new chat, add Notifications from the tools menu.

Then ask your AI: “Send me a test message on Telegram.” A message arrives in Telegram, and you’re set.

Using Codex? Codex setup