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Mcp Openweather

mcp-mschneider82-mcp-openweather · by mschneider82

mcp server for openweather free api

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Install

$ agentstack add mcp-mschneider82-mcp-openweather

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

MCP Weather Service

A simple MCP service that provides current weather and 5-day forecast using the free OpenWeatherMap API.

Features

  • Current weather conditions
  • 5-day weather forecast
  • Configurable units (Celsius/Fahrenheit/Kelvin)
  • Multi-language support
  • Simple MCP integration

Prerequisites

  • Go 1.20+
  • OpenWeatherMap API key

Installation

  1. Get OpenWeatherMap API key from https://openweathermap.org/api
  2. Clone repository:

``bash git clone https://github.com/mschneider82/mcp-openweather.git cd mcp-openweather ``

  1. Build:

``bash go build -o mcp-weather ``

Installing via Smithery

To install MCP Weather Service for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @mschneider82/mcp-openweather --client claude

Configuration

Set required environment variable:

``bash export OWM_API_KEY="your_api_key_here" ``

Usage

```json

"mcpServers": { "mcp-openweather": { "command": "/home/YOURUSER/git/mcp-openweather/mcp-openweather", "env": { "OWMAPIKEY": "PUTAPIKEY_HERE" } } }

```

MCP Parameters

``json { "tool": "weather", "params": { "city": "Berlin", // Required "units": "c", // Optional (c|f|k) "lang": "en" // Optional (en|de|fr|...) } } ``

Example Response

```txt Current weather for München: Conditions: Klarer Himmel Now: 17.78 metric High: 18.66 metric Low: 17.36 metric Pressure: 1017 Humidity: 40 FeelsLike: 16.66 Wind Speed: 1.79 Wind Degree: 61 Sunrise: 1747107429 Unixtime Sunset: 1747161784 Unixtime Weather Forecast for München: Date & Time: 2025-05-13 12:00:00 +0000 UTC Conditions: Clear Klarer Himmel Temp: 17.78 High: 18.93 Low: 17.78

Date & Time: 2025-05-13 15:00:00 +0000 UTC Conditions: Clear Klarer Himmel Temp: 18.33 High: 19.44 Low: 18.33

Date & Time: 2025-05-13 18:00:00 +0000 UTC Conditions: Clear Klarer Himmel Temp: 16.32 High: 16.32 Low: 15.59

Date & Time: 2025-05-13 21:00:00 +0000 UTC Conditions: Clear Klarer Himmel Temp: 9.18 High: 9.18 Low: 9.18 ... ```

Error Handling

Common error scenarios:

Missing API key: FATAL: OWMAPIKEY environment variable not set

Invalid city: current weather error: failed to fetch current weather: city not found

Network issues: failed to fetch forecast: context deadline exceeded

Development

Contributions welcome! Please follow these steps:

Fork the repository

Create a feature branch

Commit changes

Push to the branch

Create a Pull Request

License

MIT License - see LICENSE for details

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

Reviews

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Versions

  • v0.1.0 Imported from the upstream source.

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