mcp-max-messenger

The first MCP server for MAX Messenger — Russia's national messenger by VK (75M+ users).

Connect AI clients (Claude Desktop, Cursor, n8n, and any MCP-compatible app) to MAX: send and read messages, manage chats and members, send media, handle button presses, format with HTML/Markdown — all through the open Model Context Protocol standard.

21 tools with full coverage of MAX Bot API.

Why MAX?

🇷🇺 National messenger mandated for pre-installation on all smartphones in Russia (September 2025)
📱 75M+ registered users
🏢 Recommended by the Ministry of Digital Development for government agencies and large enterprises
🤖 Full Bot API with official SDKs: TypeScript, Python, Go, Java, PHP

Quick Start

Prerequisites

Node.js 18+
A MAX bot token (create a bot at max.ru)

Claude Desktop / Cursor (stdio mode)

Add to your Claude Desktop config:

Mac: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

config.json

{
  "mcpServers": {
    "max-messenger": {
      "command": "npx",
      "args": ["-y", "@woyax/mcp-max-messenger"],
      "env": {
        "MAX_TOKEN": "YOUR_BOT_TOKEN"
      }
    }
  }
}

Restart Claude Desktop. The MAX tools will appear automatically.

Remote / Hosted mode (HTTP)

bash

MAX_TOKEN=YOUR_BOT_TOKEN MCP_TRANSPORT=http MCP_PORT=3000 npx @woyax/mcp-max-messenger

Connect any MCP client to http://your-server:3000/mcp.

Available Tools (21)

Messages

Tool	Description
`get_messages`	Read messages from a chat (by chat_id or message_ids)
`send_message`	Send a message with text, HTML/Markdown, inline keyboard, media attachments
`edit_message`	Edit message text and attachments
`delete_message`	Delete a message
`pin_message`	Pin a message in a chat
`unpin_message`	Unpin the currently pinned message

Media

Tool	Description
`send_media`	Upload and send photo, video, audio, or file by URL
`send_action`	Show typing indicator, "sending photo/video/audio/file", mark as read

Chats

Tool	Description
`get_bot_info`	Bot info: name, ID, username, description
`get_chats`	List all group chats the bot participates in
`get_chat`	Full chat details: participants, pinned message, owner
`edit_chat`	Rename chat, change description or icon

Members

Tool	Description
`get_chat_members`	List chat members with roles
`get_admins`	List chat administrators with permissions
`set_admin`	Grant admin rights to a member
`remove_admin`	Revoke admin rights
`add_members`	Add users to a group chat
`remove_member`	Remove a user from a group chat

Events

Tool	Description
`get_updates`	Incoming events: messages, button presses, new dialogs (long polling)
`answer_callback`	Respond to inline button press: show notification or update message

Buttons (via send_message attachments)

5 button types supported: callback, link, message, request_contact, request_geo_location.

Usage Examples

Once connected to Claude Desktop, use natural language:

"Send a message to chat 123456789: 'The meeting starts in 10 minutes'"

"Send an approval request with Approve/Reject buttons to the team chat"

"Show me the last 10 messages from the announcements chat"

"Send this photo to the chat: https://example.com/image.jpg"

"Who are the members of the sales group? Make Alex an admin."

"Check for new incoming messages and button presses"

Configuration

Environment Variables

Variable	Required	Default	Description
`MAX_TOKEN`	✅	—	Your MAX bot token
`MCP_TRANSPORT`	❌	`stdio`	Transport: `stdio` or `http`
`MCP_PORT`	❌	`3000`	Port for HTTP mode

Command-line Flags

bash

# Local stdio mode (default)
npx @woyax/mcp-max-messenger

# Remote HTTP mode
npx @woyax/mcp-max-messenger --transport http --port 3000

Architecture

Two independent layers — tools work identically in both modes:

Code

src/
├── core/               # Business logic — shared between modes
│   ├── max-client.ts   # MAX API HTTP client
│   ├── types.ts        # TypeScript types for MAX API
│   └── tools/
│       ├── bot.ts      # get_bot_info
│       ├── chats.ts    # get_chats, get_chat, edit_chat, send_action
│       ├── messages.ts # send/get/edit/delete/pin/unpin, send_media
│       ├── members.ts  # get_chat_members, get_admins, set/remove_admin, add/remove_members
│       └── updates.ts  # get_updates, answer_callback
├── transports/         # Transport layer — selected at runtime
│   ├── stdio.ts        # Local mode (Claude Desktop, Cursor)
│   └── http.ts         # Remote mode (Streamable HTTP)
└── index.ts            # Entry point: transport selection

MAX API Notes

Authorization: Token passed as Authorization: <token> — no Bearer prefix
Base URL: https://platform-api.max.ru
Rate limit: 30 requests/second
Group chats: GET /chats returns group chats only
Personal dialogs: Accessible via get_updates — use the returned chat_id with all standard tools
Media upload: Two-step process (upload → send). Audio/video tokens come from the upload step, not the file transfer
HTTP transport: Uses Streamable HTTP (SSE deprecated since MCP SDK 1.10.0)

Known MAX API Issues

remove_admin may return success: true without actually revoking rights — confirmed bug on MAX side
open_app button type returns "Field 'webApp' cannot be null" — MAX API bug
add_members may fail with add.participant.privacy if the user has privacy mode enabled

Roadmap

HTTP mode testing on VPS with n8n integration
Hosted MCP service (connect by URL, no local install)
Webhook support for real-time event handling
answer_callback testing via n8n webhook workflow

Author & Support

Built by Oleg Alekseev — ERP/AI integration architect.

📧 woyaxnini@gmail.com · woyax@yandex.com
💬 Telegram: @ale_oleg · Channel: @woyax_ai
💬 MAX: max.ru/id503610654564_biz

Need help integrating AI agents with your ERP, CRM, or MAX? Custom MCP servers, n8n workflows, AI automation — contact me.

License

Free to use for personal and corporate purposes. Selling as a hosted service requires author's permission. See LICENSE for details.

Max Messenger README