HackMD MCP Server

A Model Context Protocol (MCP) server that interfaces with the HackMD API, allowing LLM clients to access and interact with HackMD notes, teams, user profiles, and history data.

Features

• Get user profile information
• Create, read, update, and delete notes
• Manage team notes and collaborate with team members
• Access reading history
• List and manage teams
• Dual transport support: Both HTTP and STDIO transports
• Cloud deployment ready: Support Smithery and other platforms

Requirements

• Node.js 18+

Local Installation (STDIO Transport)

1. Add this server to your mcp.json / claude_desktop_config.json:

{
  "mcpServers": {
    "hackmd": {
      "command": "npx",
      "args": ["-y", "hackmd-mcp"],
      "env": {
        "HACKMD_API_TOKEN": "your_api_token"
      }
    }
  }
}

You may also optionally set the HACKMD_API_URL environment variable if you need to use a different HackMD API endpoint.

2. Restart your MCP client (e.g., Claude Desktop)

3. Use the tools to interact with HackMD

Server Deployment (HTTP Transport)

Self-Hosting

Follow the Local Development instructions to set up the project locally, then run:

pnpm run start:http

This will start the server on port 8081 by default. You can change the port by setting the PORT environment variable.

Cloud Deployment

You can deploy this MCP server to any cloud platform that supports Node.js server applications.

You can also deploy via MCP platforms like Smithery.

Configuration

Environment Variables (STDIO Transport and HTTP Transport server where host provides the config)

When using the STDIO transport or hosting the HTTP transport server, you can pass configuration via environment variables:

• HACKMD_API_TOKEN: HackMD API Token (Required for all operations)
• HACKMD_API_URL: (Optional) HackMD API URL (Defaults to https://api.hackmd.io/v1)

Environment variables applied only for the HTTP transport server:

• ALLOWED_HACKMD_API_URLS: (Optional) A comma-separated list of allowed HackMD API URLs. The server will reject requests if the provide HackMD API URL is not in this list. If not set, only the default URL (https://api.hackmd.io/v1) is allowed.

[!CAUTION]

If you are hosting the HTTP transport server with token pre-configured, you should protect your endpoint and implement authentication before allowing users to access it. Otherwise, anyone can access your MCP server while using your HackMD token.

HTTP Headers (HTTP Transport where user provides the config)

When using the HTTP transport, user can pass configuration via HTTP headers:

• Hackmd-Api-Token: HackMD API Token (Required for all operations)
• Hackmd-Api-Url: (Optional) HackMD API URL (Defaults to https://api.hackmd.io/v1)

If the user provides the token in the header, while the server also has HACKMD_API_TOKEN set, the header value will take precedence.

Get a HackMD API Token

To get an API token, follow these steps:

1. Go to HackMD settings.

2. Click on "Create API Token".

3. Copy the generated token and use it in your .env file or environment variables.

Available Tools

Profile Tools

• get_user_info: Get information about the authenticated user

Teams Tools

• list_teams: List all teams accessible to the user

History Tools

• get_history: Get user's reading history

Team Notes Tools

• list_team_notes: List all notes in a team
• create_team_note: Create a new note in a team
• update_team_note: Update an existing note in a team
• delete_team_note: Delete a note in a team

User Notes Tools

• list_user_notes: List all notes owned by the user
• get_note: Get a note by its ID
• create_note: Create a new note
• update_note: Update an existing note
• delete_note: Delete a note

Example Usage

Basic Note Management

Can you help me manage my HackMD notes?

List Notes

Please list all my notes.

Create a New Note

Create a new note with the title "Meeting Notes" and content:

Meeting Notes

Discussion points:

• Item 1
• Item 2

// Code block

Team Collaboration

Show me all the teams I'm part of and list the notes in the first team.

Local Development

This project uses pnpm as its package manager.

Clone the repository and install dependencies:

git clone https://github.com/yuna0x0/hackmd-mcp.git
cd hackmd-mcp
pnpm install

Configuration

1. Create a .env file by copying the example:

cp env.example .env

2. Edit the .env file and add your HackMD API token:

HACKMD_API_TOKEN=your_api_token

Debugging with MCP Inspector

You can use the MCP Inspector to test and debug the HackMD MCP server:

npx @modelcontextprotocol/inspector -e HACKMD_API_TOKEN=your_api_token npx hackmd-mcp

# Use this instead when Local Development
pnpm run inspector

Then open your browser to the provided URL (usually http://localhost:6274) to access the MCP Inspector interface. From there, you can:

1. Connect to your running HackMD MCP server

2. Browse available tools

3. Run tools with custom parameters

4. View the responses

This is particularly useful for testing your setup before connecting it to MCP clients like Claude Desktop.

Docker

Pull from GitHub Container Registry:

docker pull ghcr.io/yuna0x0/hackmd-mcp

Docker build (Local Development):

docker build -t ghcr.io/yuna0x0/hackmd-mcp .

Docker multi-platform build (Local Development):

docker buildx build --platform linux/amd64,linux/arm64 -t ghcr.io/yuna0x0/hackmd-mcp .

MCP Bundles (MCPB)

To create an MCP Bundle for this server, run:

pnpm run pack:mcpb

Security Notice

This MCP server accepts your HackMD API token in the .env file, environment variable or HTTP header. Keep this information secure and never commit it to version control.

License

This project is licensed under the MIT License - see the LICENSE file for details.