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mcp/harbor
Verified official

WeatherXM FACT — Forecast Accuracy & Ground-Truth Verification MCP

v2.1.0

com.weatherxm.fact/mcp

Scores 45 NWP & AI weather models (ECMWF, GFS, ICON, meteoblue, MOSAIC) against 8,927 stations.

transport:streamable-http tools:4
Website

Target client

run in your project directory 

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

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

get_best_forecast_model Read-only

get best forecast model

check_ground_truth_coverage Read-only

check ground truth coverage

get_fact_leaderboard Read-only

get fact leaderboard

get_model_head_to_head Read-only

get model head to head

All 4 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.