Fetch MCP server

This MCP server provides URL fetching functionality for Claude, allowing you to retrieve content from web addresses directly through the Claude interface. It's designed to work seamlessly with the Claude Code CLI to expand Claude's capabilities.

Installation

The fetch MCP can be installed globally using the Claude Code CLI with a single command:

claude mcp add --scope global fetch go run github.com/oxplot/fetch-mcp@latest

This command adds the fetch MCP to your global scope, making it available for all your Claude sessions.

Usage

Basic Fetching

To fetch content from a URL, use the following syntax:

<fetch url="https://example.com"/>

This will retrieve the content from the specified URL and make it available to Claude.

Setting Headers

You can set custom HTTP headers when fetching a URL:

<fetch url="https://example.com" headers='{"User-Agent": "Custom Agent", "Authorization": "Bearer token123"}'/>

Note that the headers parameter accepts a JSON object containing key-value pairs of header names and values.

Handling Authentication

For URLs requiring basic authentication:

<fetch url="https://secure-site.com/protected-resource" headers='{"Authorization": "Basic dXNlcm5hbWU6cGFzc3dvcmQ="}'/>

Replace dXNlcm5hbWU6cGFzc3dvcmQ= with your Base64-encoded credentials (username:password).

Error Handling

If a fetch operation fails, the MCP will return an error message explaining the issue, such as connection problems or invalid URLs.

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 "fetch" '{"command":"go","args":["run","github.com/oxplot/fetch-mcp@latest"]}'

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": {
        "fetch": {
            "command": "go",
            "args": [
                "run",
                "github.com/oxplot/fetch-mcp@latest"
            ]
        }
    }
}

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": {
        "fetch": {
            "command": "go",
            "args": [
                "run",
                "github.com/oxplot/fetch-mcp@latest"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect