Flutter Tools MCP server

The Flutter Tools MCP server provides tools for interacting with the Flutter SDK, focusing on diagnostic analysis and fixes for Dart/Flutter files. It helps developers identify and resolve issues in their Flutter projects through a standardized interface.

Installation

To install the Flutter Tools MCP server, follow these steps:

1. Ensure you have the necessary dependencies installed:

   • Node.js
   • Flutter SDK (accessible in your PATH)

2. Configure the MCP server in your MCP settings file by adding:

{
  "mcpServers": {
    "flutter-tools": {
      "command": "node",
      "args": ["/path/to/flutter-tools/build/index.js"],
      "env": {}
    }
  }
}

Make sure to replace /path/to/flutter-tools/build/index.js with the actual path to the compiled JavaScript file.

Usage

Getting Diagnostics

To analyze a Dart/Flutter file and receive diagnostics:

{
  "name": "get_diagnostics",
  "arguments": {
    "file": "/path/to/your/file.dart"
  }
}

This command will return diagnostic information about your Dart/Flutter file, highlighting potential issues and errors.

Applying Fixes

To automatically apply suggested fixes to a Dart/Flutter file:

{
  "name": "apply_fixes",
  "arguments": {
    "file": "/path/to/your/file.dart"
  }
}

This command will apply recommended fixes to the specified file, helping resolve common issues automatically.

Server Configuration

When running the server, simply execute:

node /path/to/flutter-tools/build/index.js

Make sure the Flutter SDK is properly installed and accessible in your system's PATH before using these tools.

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 "flutter-tools" '{"command":"node","args":["/path/to/flutter-tools/build/index.js"],"env":[]}'

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": {
        "flutter-tools": {
            "command": "node",
            "args": [
                "/path/to/flutter-tools/build/index.js"
            ],
            "env": []
        }
    }
}

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": {
        "flutter-tools": {
            "command": "node",
            "args": [
                "/path/to/flutter-tools/build/index.js"
            ],
            "env": []
        }
    }
}

3. Restart Claude Desktop for the changes to take effect