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.

Version drift? If the PyPI and MCP Registry badges show different versions, the Registry is catching up to the latest PyPI release on this server's next tag. Forward-only sync — we don't tag content-free releases just to sync. See qso-graph/.github TEMPLATES.md for the sync mechanism.

Install

pip install solar-mcp

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)
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": "solar-mcp"
    }
  }
}

Claude Code

Add to .claude/settings.json:

{
  "mcpServers": {
    "solar": {
      "command": "solar-mcp"
    }
  }
}

ChatGPT Desktop

{
  "mcpServers": {
    "solar": {
      "command": "solar-mcp"
    }
  }
}

Cursor

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

{
  "mcpServers": {
    "solar": {
      "command": "solar-mcp"
    }
  }
}

VS Code / GitHub Copilot

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

{
  "servers": {
    "solar": {
      "command": "solar-mcp"
    }
  }
}

Gemini CLI

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

{
  "mcpServers": {
    "solar": {
      "command": "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?"

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
pip install -e .

License

GPL-3.0-or-later