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)
`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

Tool Reference¶

Generated from the released server's own tool definitions.

get_version_info¶

Get solar-mcp service version and upstream spec version.

Returns the running PyPI version of solar-mcp and the NOAA SWPC endpoint set revision currently in use. Use this to confirm fleet alignment across MCP deployments — agents can compare service_version and spec_version across servers to detect drift without going outside the MCP protocol.

No parameters.

solar_alerts¶

Get active NOAA space weather alerts and warnings.

Shows current solar flare alerts, geomagnetic storm warnings, radiation storm alerts, and other SWPC bulletins.

No parameters.

solar_band_outlook¶

Get HF band-by-band propagation outlook based on current conditions.

Derives a propagation assessment for each HF band (160m through 6m) from the current SFI and Kp values. Useful for deciding which band to operate on right now.

No parameters.

solar_conditions¶

Get current solar conditions — SFI, Kp, and NOAA space weather scales.

Returns the latest 10.7 cm solar flux index (SFI), planetary Kp index, and NOAA R/S/G scales (radio blackout, solar radiation, geomagnetic storm). Includes an HF band outlook derived from current indices.

No parameters.

solar_forecast¶

Get the NOAA 27-day solar flux and geomagnetic forecast.

Shows predicted SFI and Kp values for the next 27 days, useful for planning DX operations, contests, and POTA/SOTA activations.

No parameters.

solar_wind¶

Get real-time DSCOVR L1 solar wind data.

Shows interplanetary magnetic field (Bz component), solar wind speed, and proton density from the DSCOVR satellite at L1 (~1.5M km sunward). Southward Bz (negative) drives geomagnetic storms.

No parameters.

solar_xray¶

Get GOES X-ray flux and solar flare status.

Shows the current X-ray classification (A, B, C, M, X) from GOES satellite data. M and X class flares can cause HF radio blackouts.

No parameters.