Solar Mcp

solar-mcp

MCP server for space weather and HF propagation conditions — live solar flux, Kp index, DSCOVR solar wind, X-ray flux, alerts, 27-day forecast, and band-by-band outlook through any MCP-compatible AI assistant.

Part of the qso-graph project. No authentication required — all data from NOAA SWPC public endpoints.

Install

uvx solar-mcp            # run it; nothing to install

Tools

Tool	Description
solar_conditions	Current SFI, Kp, and NOAA R/S/G space weather scales
solar_forecast	27-day SFI and Kp forecast from NOAA
solar_alerts	Active space weather alerts and warnings
solar_wind	Real-time DSCOVR L1 solar wind (Bz, speed, density)
solar_xray	GOES X-ray flux and solar flare classification
solar_band_outlook	HF band-by-band propagation assessment (160m-6m), each band rated on the scale in BAND-OUTLOOK.md
get_version_info	Service version + upstream spec version (fleet identity attestation)

Quick Start

No credentials needed — just install and configure your MCP client.

Configure your MCP client

Claude Desktop

Add to claude_desktop_config.json (~/Library/Application Support/Claude/ on macOS, %APPDATA%\Claude\ on Windows):

{
  "mcpServers": {
    "solar": {
      "command": "uvx",
      "args": ["solar-mcp"]
    }
  }
}

Claude Code

Add to .claude/settings.json:

{
  "mcpServers": {
    "solar": {
      "command": "uvx",
      "args": ["solar-mcp"]
    }
  }
}

ChatGPT Desktop

{
  "mcpServers": {
    "solar": {
      "command": "uvx",
      "args": ["solar-mcp"]
    }
  }
}

Cursor

Add to .cursor/mcp.json (project-level) or ~/.cursor/mcp.json (global):

{
  "mcpServers": {
    "solar": {
      "command": "uvx",
      "args": ["solar-mcp"]
    }
  }
}

VS Code / GitHub Copilot

Add to .vscode/mcp.json in your workspace:

{
  "servers": {
    "solar": {
      "command": "uvx",
      "args": ["solar-mcp"]
    }
  }
}

Gemini CLI

Add to ~/.gemini/settings.json (global) or .gemini/settings.json (project):

{
  "mcpServers": {
    "solar": {
      "command": "uvx",
      "args": ["solar-mcp"]
    }
  }
}

Ask questions

"What are the current solar conditions?"

"Is the solar wind causing any geomagnetic disturbance?"

"What's the 27-day solar forecast look like?"

"Are any bands open right now on HF?"

"Are there any active space weather alerts?"

"What class solar flare is happening?"

Data Sources

Every value comes from a public NOAA Space Weather Prediction Center endpoint at services.swpc.noaa.gov:

Data	Endpoint	Used by
10.7 cm solar flux (SFI)	/products/summary/10cm-flux.json	solar_conditions, solar_band_outlook
Planetary K-index	/products/noaa-planetary-k-index.json	solar_conditions, solar_band_outlook
NOAA R/S/G scales	/products/noaa-scales.json	solar_conditions
Space weather alerts	/products/alerts.json	solar_alerts
27-day outlook	/text/27-day-outlook.txt	solar_forecast
Solar wind (real-time, 1 minute)	/json/rtsw/rtsw_wind_1m.json, /json/rtsw/rtsw_mag_1m.json	solar_wind
GOES X-ray flux	/json/goes/primary/xrays-6-hour.json	solar_xray

Testing Without Network

SOLAR_MCP_MOCK=1 solar-mcp

MCP Inspector

solar-mcp --transport streamable-http --port 8008

Development

git clone https://github.com/qso-graph/solar-mcp.git
cd solar-mcp
uv sync --group dev
uv run pytest

License

GPL-3.0-or-later