Publishing Packages

Learn how to create and publish MCP server packages to the registry.

1. Register an account

Before publishing, you need a registry account:

mcpak register <username>

2. Create mcpak.json

Run mcpak init or create mcpak.json manually:

{
  "name": "my-mcp-server",
  "version": "1.0.0",
  "description": "My awesome MCP server",
  "mcpServer": {
    "command": "node",
    "args": ["server.js"],
    "env": {
      "PORT": "3000"
    }
  }
}

3. Publish

From the directory containing your mcpak.json:

mcpak publish

The CLI packages your project into a tarball, computes a SHA-256 checksum, and uploads it to the registry. The first user to publish a package becomes its owner.

4. Update versions

To publish a new version, update the version field in mcpak.json and run mcpak publish again. Only the package owner can publish new versions.