Aare.guru MCP Server

A Model Context Protocol (MCP) server that provides access to the Aare.guru API for getting water temperature and swimming conditions of the Aare river in Switzerland.

Features

This MCP server provides the following tools:

• get_cities: Get list of all available monitoring locations
• get_current_conditions: Get comprehensive current data (temperature, flow, forecasts) for a specific location
• get_today_summary: Get minimal current temperature and swimming recommendation
• get_widget_data: Get current data for all locations at once
• get_historical_data: Get historical time series data for temperature, flow, and air temperature

Requirements

• Node.js 18 or newer

Installation

Using npx (Recommended)

npx aareguru-mcp

Global Installation

npm install -g aareguru-mcp
aareguru-mcp

Local Development

git clone 
cd aareguru-mcp
npm install
npm start

Usage with Claude Desktop

Add the following to your Claude Desktop MCP configuration:

{
  "mcpServers": {
    "aareguru": {
      "command": "npx",
      "args": ["aareguru-mcp"]
    }
  }
}

Or if installed globally:

{
  "mcpServers": {
    "aareguru": {
      "command": "aareguru-mcp"
    }
  }
}

Available Tools

get_cities

Get a list of all available monitoring locations along the Aare river.

Parameters: None required

• app (optional): App identifier
• version (optional): Version number
• values (optional): Specific values to extract

get_current_conditions

Get comprehensive current conditions for a specific location.

Parameters:

• city (optional, default: "bern"): Location identifier (e.g., "bern", "thun")
• app (optional): App identifier
• version (optional): Version number
• values (optional): Specific values to extract

get_today_summary

Get a minimal summary with current temperature and swimming recommendation.

Parameters:

• city (optional, default: "bern"): Location identifier
• app (optional): App identifier
• version (optional): Version number
• values (optional): Specific values to extract

get_widget_data

Get current data for all locations simultaneously.

Parameters:

• app (optional): App identifier
• version (optional): Version number
• values (optional): Specific values to extract

get_historical_data

Get historical time series data for water temperature, flow, and air temperature.

Parameters: (all required)

• city: Location identifier
• start: Start date/time (ISO format, timestamp, "yesterday", "-1 day", etc.)
• end: End date/time (ISO format, timestamp, "now", etc.)
• app (optional): App identifier
• version (optional): Version number
• values (optional): Specific values to extract

Example Queries

Once connected to Claude Desktop, you can ask questions like:

• "What's the current water temperature in Bern?"
• "Show me all available Aare monitoring locations"
• "Get the historical data for Thun from last week"
• "What are the current swimming conditions across all locations?"

API Data

This server connects to the Aare.guru API (https://aare.guru), which provides:

• Current water temperature
• Water flow/discharge rates
• Air temperature
• Swimming recommendations and "Sprüche" (sayings)
• Weather forecasts
• Historical data
• Multiple monitoring locations along the Aare river

License

GNU General Public License v3.0

Credits

Data provided by Aare.guru and the BAFU. The API is intended for non-commercial public use only.

This MCP server is not officially affiliated with Aare.guru but uses their public API in accordance with its terms of service.