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Telegram MCP Integration for LangChain

Connect Telegram to LangChain through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 5 read 2 write Bearer token auth
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Connect Telegram to LangChain

Bridge LangChain agents to local KosmoKrator integration tools through MCP or headless CLI calls.

Use the MCP gateway when the agent should discover tools, or wrap kosmo integrations:call for fixed chains. The gateway is local, scoped to this integration, and starts with --write=deny so LangChain can inspect read-capable tools without receiving write access by default.

Telegram MCP Config for LangChain

Keep the gateway scoped to the integration and operation class needed by the chain.

{
  "mcpServers": {
    "kosmokrator-telegram": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=telegram",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=telegram --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Telegram instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

Telegram Tools Visible to LangChain

LangChain sees stable MCP tool names generated from the Telegram integration catalog.

MCP toolSource functionTypeDescription
integration__telegram__telegram_send_message telegram.telegram_send_message Write Send a text message to a Telegram chat. Provide the chat_id and message text. The chat_id can be a numeric ID or @channelusername. Supports optional parse_mode (Markdown, MarkdownV2, HTML) and other formatting options.
integration__telegram__telegram_list_updates telegram.telegram_list_updates Read Get incoming updates (messages, callback queries, inline queries, etc.) for the Telegram bot. Use offset to acknowledge previously received updates. Returns an array of update objects.
integration__telegram__telegram_get_me telegram.telegram_get_me Read Get information about the authenticated Telegram bot. Returns the bot ID, username, display name, and capability flags.
integration__telegram__telegram_list_chats telegram.telegram_list_chats Read List recent chats the bot has interacted with. Since Telegram Bot API does not have a native list-chats endpoint, this fetches recent updates and extracts unique chats. Returns chat IDs, types, and titles.
integration__telegram__telegram_get_chat telegram.telegram_get_chat Read Get information about a specific Telegram chat by its ID or @username. Returns chat type, title, description, member count, and other metadata.
integration__telegram__telegram_send_photo telegram.telegram_send_photo Write Send a photo to a Telegram chat. Provide the chat_id and a photo URL or file_id. Supports optional caption with formatting and other options.
integration__telegram__telegram_get_current_user telegram.telegram_get_current_user Read Get the profile of the currently authenticated Telegram bot. Returns bot ID, username, display name, and capability flags.

Related Telegram Pages

Telegram CLIUse direct JSON commands instead of MCP discovery. Telegram MCPFull gateway reference and MCP tool names. KosmoKrator for LangChainClient-level gateway setup.