Tlon MCP Server

An MCP (Model Context Protocol) server that provides tools for interacting with Tlon agents.

Demo

https://github.com/user-attachments/assets/765847b2-df40-44c0-bfd3-c23eb609bbd8

Features

• send-dm tool: Send direct messages to other users by ship ID or nickname
• read-dm-history tool: Retrieve recent messages from a direct-message channel
• list-contacts tool: Get contacts with their nicknames and ship IDs
• groups & channels: List groups, channels, members, and read channel history
• posting & reactions: Send channel messages, react to posts, delete posts
• activity: Fetch mentions/replies and unread counts
• profiles: Get and update contact profiles
• Natural language support: Reference people by their nicknames ("Send a message to Brian")

Prerequisites

• Node.js (v16+)
• A running Urbit ship

Installation

1. Clone the repository
2. Navigate to the project directory
3. Install dependencies:

npm install

Important: Always run npm install manually in the terminal before using with Claude Desktop or any other MCP client. This prevents installation output from interfering with the MCP protocol.

Configuration

Configure the server using environment variables:

Variable	Description	Default
URBIT_URL	Full Urbit URL (preferred)	—
URBIT_SHIP	Your Urbit ship name (without ~)	zod
URBIT_CODE	Your Urbit +code	lidlut-tabwed-pillex-ridrup
URBIT_HOST	Urbit host	localhost
URBIT_PORT	Urbit port	8080
PORT	MCP server port (HTTP mode only)	3001
MCP_TRANSPORT	Transport type (http or stdio)	stdio

Usage

Starting the server

# Start with default stdio transport
npm start

# Start with HTTP transport
export MCP_TRANSPORT=http && npm start

# Development mode with auto-reload
npm run dev

Setting up with Claude Desktop

The default stdio mode works seamlessly with Claude Desktop. Create or edit the Claude Desktop configuration file at:

~/Library/Application Support/Claude/claude_desktop_config.json

With the following content:

{
  "mcpServers": {
    "tlon-mcp": {
      "command": "/bin/sh",
      "args": ["-c", "cd /path/to/server && node index.js"]
    }
  }
}

Important: Be sure to run npm install in the server directory first before configuring Claude Desktop.

Using the tools with natural language

Once configured, you can use natural language commands:

Send a message to Brian

Show me my recent DM history with ~sampel-palnet

Who are my contacts?

Available Tools

send-dm

Sends a direct message to another ship.

Parameters:

• recipient: The recipient's ship name (with ~) or nickname
• message: The message text to send

Example usage:

Send a message to Brian saying "Let's meet tomorrow"

read-dm-history

Fetches the latest messages from a direct-message channel between your ship and another.

Parameters:

• correspondent: The other ship's name (with ~) or nickname
• count (optional): How many messages to return (default 100, max 500)
• format (optional): Output format - "raw" or "formatted" (default "formatted")

Example usage:

Show me my last 50 messages with Dad

list-contacts

Retrieves your contacts list with ship IDs and nicknames.

Parameters:

• format (optional): Output format - "raw" or "formatted" (default "formatted")

Example usage:

List all my contacts

create-group

Creates a new group owned by your ship.

Parameters:

• name: Group name (auto-slugified for the URL)
• title (optional): Display title (defaults to name)
• description (optional): Group description

Example usage:

Create a group called "Weekend Projects"

list-groups

Lists all groups you are a member of.

Example usage:

What groups am I in?

get-group-info

Get detailed information about a specific group including metadata, channels, and member count.

Parameters:

• group: Group flag (e.g., ~sampel-palnet/weekend-projects)

Example usage:

Tell me about the group ~bolbex-fogdys/my-group

list-group-members

List all members of a group with their roles.

Parameters:

• group: Group flag (e.g., ~sampel-palnet/weekend-projects)

Example usage:

Who's in the Weekend Projects group?

invite-to-group

Invite one or more ships to a group.

Parameters:

• group: Group flag (e.g., ~sampel-palnet/weekend-projects)
• ships: Array of ship names to invite (with ~)

Example usage:

Invite ~zod and ~bus to my Weekend Projects group

assign-role

Assign a role to a member in a group.

Parameters:

• group: Group flag
• ship: Ship to assign role to (with ~)
• role: Role ID to assign

remove-role

Remove a role from a member in a group.

Parameters:

• group: Group flag
• ship: Ship to remove role from (with ~)
• role: Role ID to remove

create-channel

Creates a new channel in an existing group.

Parameters:

• group: Group flag (e.g., ~sampel-palnet/weekend-projects)
• type: Channel type — chat, notebook, or gallery
• name: Channel name (auto-slugified for the URL)
• title (optional): Display title (defaults to name)
• description (optional): Channel description

Example usage:

Create a chat channel called "general" in my Weekend Projects group

Add a notebook called "dev-log" to ~bolbex-fogdys/my-group

Create a gallery channel called "screenshots" in ~sampel-palnet/weekend-projects

list-channels

List all channels in a group.

Parameters:

• group: Group flag (e.g., ~sampel-palnet/weekend-projects)

Example usage:

What channels are in the Weekend Projects group?

get-channel-info

Get metadata about a specific channel.

Parameters:

• channel: Channel nest (e.g., chat/~sampel-palnet/general)

read-channel-history

Fetch recent messages from a channel.

Parameters:

• channel: Channel nest (e.g., chat/~sampel-palnet/general)
• count (optional): Number of messages to fetch (default 50, max 100)
• format (optional): Output format — "raw" or "formatted" (default "formatted")

Example usage:

Show me the last 20 messages in chat/~bolbex-fogdys/general

send-to-channel

Send a message to a channel.

Parameters:

• channel: Channel nest (e.g., chat/~sampel-palnet/general)
• message: Message text to send

Example usage:

Send "hello everyone" to chat/~bolbex-fogdys/general

react-to-post

Add an emoji reaction to a post.

Parameters:

• channel: Channel nest
• postId: Post ID (@ud format with dots)
• emoji: Emoji to react with

unreact-to-post

Remove your reaction from a post.

Parameters:

• channel: Channel nest
• postId: Post ID (@ud format with dots)

edit-post

Edit an existing post's content.

Parameters:

• channel: Channel nest
• postId: Post ID to edit (@ud format with dots)
• message: New message text

delete-post

Delete a post from a channel.

Parameters:

• channel: Channel nest
• postId: Post ID to delete

get-activity

Fetch recent activity and notifications.

Parameters:

• type (optional): Filter by type — "all", "mentions", or "replies" (default "all")
• limit (optional): Number of items (default 10, max 25)

Example usage:

Show me my recent mentions

get-unreads

Get unread message counts across all channels.

Example usage:

Do I have any unread messages?

get-profile

Fetch another ship's profile information.

Parameters:

• ship: Ship name (with ~)

Example usage:

What's ~zod's profile?

get-my-profile

Get your own profile information.

Example usage:

Show me my profile

update-profile

Update your own profile fields.

Parameters:

• nickname (optional): Display name
• bio (optional): Bio/description
• status (optional): Status message
• avatar (optional): Avatar image URL
• cover (optional): Cover image URL

Example usage:

Set my nickname to "Captain Urbit"

License

MIT