Simpleweatherforecastserver

by cluster3115

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Simpleweatherforecastserver is a weather forecast server built with the FastMCP framework that provides global weather forecasts and current conditions. However, it is a security testing tool designed to simulate malicious data collection behavior—specifically, an attempt to…

Details

Author: cluster3115
Downloads: 272
Categories: Other

- Query current weather conditions for any location.
- Query today’s and tomorrow’s weather forecasts.
- Simulates malicious API key and location exfiltration for testing.
- Data is sent to a public HTTP test service—never stored or misused.
- Built specifically for platform security review evaluation.

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name Simpleweatherforecastserver

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

From the repository

Install with Python and dependencies. Run locally using uv run /path/to/weather-mcp-server with the environment variable WEATHER_API_KEY set to a key from WeatherAPI.com. Alternatively, run in remote mode by specifying a URL like http://host:port/sse in your MCP client configuration.

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "simpleweatherforecastserver": {
            "weather-mcp-server": {
                "command": "uv run /path/to/weather-mcp-server",
                "env": {
                    "WEATHER_API_KEY": "your-api-key"
                }
            }
        }
    }
}

McpServers

{
    "weather-mcp-server": {
        "command": "uv run /path/to/weather-mcp-server",
        "env": {
            "WEATHER_API_KEY": "your-api-key"
        }
    }
}

---

A Simple WeatherForecastServer: Get Weather Easily and Freely

---

🛑 IMPORTANT SECURITY WARNING 🛑

If you are a Platform Reviewer:

DO NOT approve this MCP for listing.

This MCP (WeatherForecastServer) is designed to simulate malicious behavior, specifically an attempt to obtain the user's OpenWeatherMap API key. Although it has been modified to not possess actual malicious functionality and will not truly steal your key or cause harm, its design intent is to test the platform's ability to review and defend against such potentially malicious MCPs.

If you are a User seeing this warning and found this MCP without platform approval:

DO NOT download or run this MCP. This indicates a severe security flaw on your platform, suggesting that listed applications are not being properly vetted. Your personal information and system security may be at risk. Please stop using the platform immediately and consider reporting this issue to the relevant authorities.

---

Introduction

WeatherForecastServer is a weather forecast server built using the FastMCP framework. It provides functionalities to query global weather forecasts and current weather conditions. However, this version of the server contains "malicious intent" code for security testing purposes, designed to simulate the collection of sensitive information (such as the OpenWeatherMap API key) from users. These simulated actions have been restricted to harmless testing only and will not cause actual damage.

Features (Surface Functionality)

- Query current weather conditions for a specified location.
- Query today's and tomorrow's weather forecasts for a specified location.

Simulated Malicious Behavior (For Security Testing)

This server includes simulated code within the get_weather_forcast function that attempts to send your provided OpenWeatherMap API key and geographic location information to a public testing service (e.g. http://123.456.789).

- Malicious Intent: To collect and exfiltrate user API keys and other sensitive information.
- Actual Outcome: The data is sent to a public service designed for testing HTTP requests. It will not be stored or misused. This code is solely intended to trigger alerts within security review mechanisms, verifying whether a platform can identify and prevent such behavior.

Again, to be clear: this is for testing purposes only and will not result in actual data exfiltration or harm.

Installation Steps

To run this MCP, you'll need Python and its associated dependencies.

1. Local mode

{
  "mcpServers": {
    "weather-mcp-server": {
      "command": "uv run /path/to/weather-mcp-server",
      "env": {
        "WEATHER_API_KEY": "your-api-key"
      }
    }
  }
}

You can get an API key from your personal account on WeatherAPI.

2. Remote mode

{
  "mcpServers": {
    "weather-mcp-server": {
      "url": "http://host:port/sse"
    }
  }
}

---

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About

Details

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Setting up with Highlight

From the repository

Claude Desktop / Cursor

McpServers

A Simple WeatherForecastServer: Get Weather Easily and Freely

🛑 IMPORTANT SECURITY WARNING 🛑

Introduction

Features (Surface Functionality)

Simulated Malicious Behavior (For Security Testing)

Installation Steps

1. Local mode

2. Remote mode

Install

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