Go Documentation MCP server

This server provides a Model Context Protocol (MCP) implementation for Go documentation, allowing you to search for Golang packages and their documentation from pkg.go.dev. It serves as an MCP server that delivers this information to language models.

Installation Options

You can install the godoc-mcp-server in two ways:

Pre-compiled Binaries

Download a pre-compiled binary from the releases page.

Install from Source

If you prefer to compile it yourself, run:

go install github.com/yikakia/godoc-mcp-server/cmd/godoc-mcp-server@latest

Using the Server

The server operates on standard input/output (stdio), so you'll need to have a compatible MCP client to communicate with it.

Basic Operation

Once installed, the server will respond to MCP requests from your client. It provides two main functions:

SearchPackage

This function allows you to search for Go packages. It returns:

• Package names
• Subpackage information
• Import statistics (how many packages import it)

GetPackageInfo

This function retrieves detailed information about a specific package.

When working with both functions together, remember that if you found a subpackage via searchPackage, you'll need to combine the main package path with the subpackage name when using getPackageInfo.

For example, if searching for "mcp" returns:

• packageName: github.com/mark3labs/mcp-go/mcp
• subpackage: client

To get information about the client subpackage, you would use: github.com/mark3labs/mcp-go/mcp/client

Features

The server includes:

• Local caching to avoid repetitive searches
• Package import statistics
• Detailed package documentation

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "godoc-mcp-server" '{"command":"godoc-mcp-server","args":[]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "godoc-mcp-server": {
            "command": "godoc-mcp-server",
            "args": []
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "godoc-mcp-server": {
            "command": "godoc-mcp-server",
            "args": []
        }
    }
}

3. Restart Claude Desktop for the changes to take effect