Weather forecast, air quality, marine, flood, elevation, historical data, climate projection, and geocoding via open-meteo-mcp-server (npx) — 17 tools, credential-free Open-Meteo API

{
  "server": "open-meteo-mcp-server",
  "version": "latest",
  "transport": "stdio",
  "entry": "dist/index.js",
  "tools_count": 17,
  "calls": 20,
  "success": 17,
  "partial": 1,
  "correct_rejections": 2,
  "p50_ms": 280,
  "credential_free": true,
  "api": "Open-Meteo (free, no key)",
  "trace": [
    {
      "tool": "geocoding",
      "args": {
        "name": "Istanbul",
        "count": 3
      },
      "ok": true,
      "ms": 501,
      "result_summary": "3 results, Istanbul pop 15.7M"
    },
    {
      "tool": "elevation",
      "args": {
        "latitude": 41.0082,
        "longitude": 28.9784
      },
      "ok": true,
      "ms": 298,
      "result_summary": "36m"
    },
    {
      "tool": "weather_forecast",
      "args": {
        "latitude": 41.0082,
        "longitude": 28.9784,
        "current_weather": true,
        "timezone": "Europe/Istanbul"
      },
      "ok": true,
      "ms": 79,
      "result_summary": "22.2C clear 10.1km/h NNE weathercode 0"
    },
    {
      "tool": "air_quality",
      "args": {
        "latitude": 41.0082,
        "longitude": 28.9784,
        "hourly": ["pm2_5", "pm10", "european_aqi"],
        "timezone": "Europe/Istanbul",
        "forecast_days": 1
      },
      "ok": true,
      "ms": 278,
      "result_summary": "24h PM2.5/PM10/EAQI hourly"
    },
    {
      "tool": "elevation",
      "args": {
        "latitude": 27.9881,
        "longitude": 86.925
      },
      "ok": true,
      "ms": 72,
      "result_summary": "8724m (Everest)"
    },
    {
      "tool": "marine_weather",
      "args": {
        "latitude": 41.12,
        "longitude": 29.05,
        "hourly": ["wave_height", "wave_period", "wave_direction"],
        "timezone": "Europe/Istanbul",
        "forecast_days": 1
      },
      "ok": true,
      "ms": 427,
      "result_summary": "hourly wave data"
    },
    {
      "tool": "weather_archive",
      "args": {
        "latitude": 41.0082,
        "longitude": 28.9784,
        "start_date": "2025-07-01",
        "end_date": "2025-07-03",
        "daily": ["temperature_2m_max", "temperature_2m_min", "precipitation_sum"]
      },
      "ok": true,
      "ms": 1848,
      "result_summary": "max 29.8/27.8/27.1C"
    },
    {
      "tool": "geocoding",
      "args": {
        "name": "Tokyo",
        "count": 1
      },
      "ok": true,
      "ms": 327,
      "result_summary": "pop 9.7M elev 44m"
    },
    {
      "tool": "weather_forecast",
      "args": {
        "latitude": 35.6762,
        "longitude": 139.6503,
        "current_weather": true,
        "temperature_unit": "fahrenheit"
      },
      "ok": true,
      "ms": 300,
      "result_summary": "Tokyo in Fahrenheit"
    },
    {
      "tool": "geocoding",
      "args": {
        "name": "xyznonexistentplace99"
      },
      "ok": true,
      "ms": 85,
      "result_summary": "empty - no results key"
    },
    {
      "tool": "flood_forecast",
      "args": {
        "latitude": 47.5,
        "longitude": 19.04,
        "daily": ["river_discharge"],
        "forecast_days": 3
      },
      "ok": true,
      "ms": 311,
      "result_summary": "1732.8 m3/s Danube"
    },
    {
      "tool": "elevation",
      "args": {
        "latitude": 31.5,
        "longitude": 35.5
      },
      "ok": true,
      "ms": 79,
      "result_summary": "-427m (Dead Sea)"
    },
    {
      "tool": "gfs_forecast",
      "args": {
        "latitude": 40.7128,
        "longitude": -74.006,
        "current_weather": true,
        "models": "gfs_seamless"
      },
      "ok": true,
      "ms": 346,
      "result_summary": "NYC 21.5C"
    },
    {
      "tool": "ecmwf_forecast",
      "args": {
        "latitude": 51.5074,
        "longitude": -0.1278,
        "current_weather": true,
        "models": "ecmwf_ifs025"
      },
      "ok": "partial",
      "ms": 80,
      "result_summary": "metadata only without hourly/daily vars"
    },
    {
      "tool": "weather_forecast",
      "args": {
        "latitude": -33.8688,
        "longitude": 151.2093,
        "current": ["temperature_2m", "relative_humidity_2m", "wind_speed_10m", "precipitation"]
      },
      "ok": true,
      "ms": 82,
      "result_summary": "Sydney 15.9C 50% RH 7.4km/h"
    },
    {
      "tool": "seasonal_forecast",
      "args": {
        "latitude": 41.0082,
        "longitude": 28.9784,
        "daily": ["temperature_2m_max"],
        "forecast_days": 30
      },
      "ok": false,
      "ms": 3,
      "error": "forecast_days must be 45/92/183/274"
    },
    {
      "tool": "seasonal_forecast",
      "args": {
        "latitude": 41.0082,
        "longitude": 28.9784,
        "daily": ["temperature_2m_max", "temperature_2m_min"],
        "forecast_days": 45
      },
      "ok": true,
      "ms": 273,
      "result_summary": "ensemble members 63KB"
    },
    {
      "tool": "ecmwf_forecast",
      "args": {
        "latitude": 51.5074,
        "longitude": -0.1278,
        "hourly": ["temperature_2m", "precipitation"],
        "models": "ecmwf_ifs025",
        "forecast_days": 1
      },
      "ok": true,
      "ms": 289,
      "result_summary": "London hourly temp+precip"
    },
    {
      "tool": "geocoding",
      "args": {
        "name": "Paris",
        "count": 3,
        "countryCode": "FR"
      },
      "ok": true,
      "ms": 323,
      "result_summary": "Paris 2.1M pop"
    },
    {
      "tool": "climate_projection",
      "args": {
        "latitude": 41.0082,
        "longitude": 28.9784,
        "daily": ["temperature_2m_max"],
        "models": "CMCC_CM2_VHR4"
      },
      "ok": false,
      "ms": 4,
      "error": "models must be array not string"
    }
  ]
}