LangChain Weather Integration

LangChain Weather Integration is a LangChain Tool that fetches real-time weather for any city using the Open-Meteo API (free, no API key needed).

Features

• Real-time weather
• Temperature in Celsius (°C)
• Humidity
• Wind speed
• UV index
• Human-readable weather descriptions
• Works as a LangChain Tool (WeatherTool)

Installation

npm install langchain-weather-integration

Quick Start

import { WeatherTool } from 'langchain-weather-integration';

async function main() {
  const tool = new WeatherTool();
  const report = await tool.call('London');
  console.log(report);
}

main();

Available Data

The tool returns a formatted multi-line weather report. Under the hood, the following fields are produced:

• city: string
• country: string
• temperature: number (°C)
• feelsLike: number (°C)
• humidity: number (%)
• windSpeed: number (m/s)
• description: string (human-readable)
• icon: string
• uvIndex: number
• airQuality: number | null (currently null)
• timestamp: Date

Built With

• TypeScript
• Open-Meteo API
• LangChain

License

MIT