Variflight MCP server

VariFlight MCP Server provides an implementation of the Model Context Protocol for accessing flight information services. This server allows you to query flight details, weather data, and flight comfort metrics through various tools, using the VariFlight API.

Getting Started

To use the VariFlight MCP server, you'll need to obtain an API key from VariFlight's website.

Installation

To set up the VariFlight MCP server, add the following configuration to your MCP server configuration file:

{
    "mcpServers": {
        "variflight": {
            "command": "npx",
            "args": [
                "-y",
                "@variflight-ai/variflight-mcp"
            ],
            "env": {
                "VARIFLIGHT_API_KEY": "your_api_key_here"
            }
        }
    }
}

Make sure to replace your_api_key_here with the actual API key you obtained from VariFlight.

Available Tools

The VariFlight MCP server provides several tools for accessing flight information and related data.

Search Flights by Departure and Arrival

You can search for flights between airports using their IATA codes:

searchFlightsByDepArr({
  dep: "PEK",  // Beijing
  arr: "SHA",  // Shanghai
  date: "2024-03-20"
})

Search Flights by Number

Look up specific flights using their flight number:

searchFlightsByNumber({
  fnum: "MU2157",
  date: "2024-03-20"
})

Get Flight Transfer Information

Find transfer options between cities:

getFlightTransferInfo({
  depcity: "BJS",
  arrcity: "LAX",
  depdate: "2024-03-20"
})

Flight Happiness Index

Retrieve detailed flight comfort metrics:

flightHappinessIndex({
  fnum: "MU2157",
  date: "2024-03-20"
})

Real-time Aircraft Location

Track aircraft location using registration number:

getRealtimeLocationByAnum({
  anum: "B2021"
})

Airport Weather Forecast

Get a 3-day weather forecast for specific airports:

getFutureWeatherByAirport({
  airport: "PEK"
})

Search Flight Itineraries

Search for purchasable flight options and find the lowest prices:

searchFlightItineraries({
  depCityCode: "BJS",  // Beijing
  arrCityCode: "SHA",  // Shanghai
  depDate: "2025-04-20"
})

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 "variflight" '{"command":"npx","args":["-y","@variflight-ai/variflight-mcp"],"env":{"VARIFLIGHT_API_KEY":""}}'

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": {
        "variflight": {
            "command": "npx",
            "args": [
                "-y",
                "@variflight-ai/variflight-mcp"
            ],
            "env": {
                "VARIFLIGHT_API_KEY": ""
            }
        }
    }
}

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": {
        "variflight": {
            "command": "npx",
            "args": [
                "-y",
                "@variflight-ai/variflight-mcp"
            ],
            "env": {
                "VARIFLIGHT_API_KEY": ""
            }
        }
    }
}

3. Restart Claude Desktop for the changes to take effect