How to integrate Telegram MCP with Codex

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Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Telegram MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Also integrate Telegram with

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise context rot.
  • Dynamic just-in-time access to 20,000 tools across 870+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Telegram MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on dashboard.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

What is the Telegram MCP server, and what's possible with it?

The Telegram MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Telegram account. It provides structured and secure access to your chats and bot functionality, so your agent can send messages, manage conversations, retrieve chat data, and interact with users or groups on your behalf.

  • Automated message sending and editing: Let your agent send new messages or edit existing ones in any chat where your bot is present, making real-time communication a breeze.
  • Chat and group management: Effortlessly manage group chats by retrieving chat details, getting administrators, exporting invite links, or counting group members.
  • Advanced chat history and message handling: Ask your agent to fetch chat history, forward messages between chats, or delete messages for streamlined moderation and record-keeping.
  • Bot and user interaction: Enable the agent to answer callback queries from inline keyboards and fetch basic bot information for smarter, context-aware responses.

Supported Tools & Triggers

Tools
Answer Callback QueryUse this method to send answers to callback queries sent from inline keyboards.
Delete MessageDelete a message, including service messages, with certain limitations.
Edit MessageEdit text messages sent by the bot.
Export Chat Invite LinkGenerate a new primary invite link for a chat; any previously generated primary link is revoked.
Forward MessageForward messages of any kind.
Get Chat InfoGet up to date information about the chat (current name of the user for one-on-one conversations, current username of a user, group or channel, etc.
Get Chat AdministratorsGet a list of administrators in a chat.
Get Chat HistoryGet chat history messages.
Get Chat Members CountGet the number of members in a chat.
Get Bot InfoGet basic information about the bot using the bot api getme method.
Get UpdatesUse this method to receive incoming updates using long polling.
Send DocumentSend general files (documents) to a telegram chat using the bot api.
Send LocationSend point on the map location to a telegram chat using the bot api.
Send MessageSend a text message to a telegram chat using the bot api.
Send PhotoSend photos to a telegram chat using the bot api.
Send PollSend a native poll to a telegram chat using the bot api.
Set Bot CommandsUse this method to change the list of the bot's commands.

Conclusion

You've successfully integrated Telegram with Codex using Composio's MCP server. Now you can interact with Telegram directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Telegram operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 870+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Telegram operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities

How to build Telegram MCP Agent with another framework

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OpenAI Agents SDK

Use Telegram MCP with OpenAI Agents SDK

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Claude Agent SDK

Use Telegram MCP with Claude Agent SDK

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Claude Code

Use Telegram MCP with Claude Code

OpenClaw logo

OpenClaw

Use Telegram MCP with OpenClaw

Hermes logo

Hermes

Use Telegram MCP with Hermes

CLI logo

CLI

Use Telegram MCP with CLI

Google ADK logo

Google ADK

Use Telegram MCP with Google ADK

LangChain logo

LangChain

Use Telegram MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Telegram MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Telegram MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Telegram MCP with LlamaIndex

CrewAI logo

CrewAI

Use Telegram MCP with CrewAI

FAQ

What are the differences in Tool Router MCP and Telegram MCP?

With a standalone Telegram MCP server, the agents and LLMs can only access a fixed set of Telegram tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Telegram and many other apps based on the task at hand, all through a single MCP endpoint.

Can I use Tool Router MCP with Codex?

Yes, you can. Codex fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Telegram tools.

Can I manage the permissions and scopes for Telegram while using Tool Router?

Yes, absolutely. You can configure which Telegram scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Telegram data and credentials are handled as safely as possible.

Used by agents from

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