WeatherXM FACT — Forecast Accuracy & Ground-Truth Verification

Connect Remote server

claude mcp add --transport http mcp https://fact.weatherxm.com/mcp

{
  "mcpServers": {
    "mcp": {
      "url": "https://fact.weatherxm.com/mcp"
    }
  }
}

{
  "servers": {
    "mcp": {
      "type": "http",
      "url": "https://fact.weatherxm.com/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://fact.weatherxm.com/mcp

Tools 4 found in our last check

• get_best_forecast_model

  Find which weather forecast model had the lowest verified historical error (MAE) for a latitude/longitude coordinate (or station_or_report_id), weather variable (temperature, wind_speed, wind_direction, precipitation, humidity), and forecast horizon (Days 0-7). For wind_directio…

• check_ground_truth_coverage

  Check historical WeatherXM FACT ground-station publication coverage for any coordinate (H3 Res-7 cell, ~5.2 km²) or station_or_report_id across temperature, wind_speed, wind_direction, precipitation, and humidity, plus nearest evaluated reference cell distance and interactive ma…

• get_fact_leaderboard

  Read the global weather forecast accuracy leaderboard (MAE, RMSE, circular angular error for wind_direction including >3 m/s active-wind curves, and categorical rain skill HSS, POD, FAR, CSI across lead days 0..7) or country-level published H3 cell-win summaries across all 45 fo…

• get_model_head_to_head

  Compare up to 10 weather forecast models head-to-head across lead days 0 to 7 on global historical error curves (including circular angular error and >3 m/s active-wind curves for wind_direction), plus optional local H3 cell (lat/lon) matched-cohort or country cell-win compariso…

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