mcp server

solar-mcp

MCP server for solar indices and space weather — SFI, SSN, Kp, DSCOVR, alerts

qso-graph/solar-mcpcommunitylistedunreviewed

Use tool

Set up

Runs on your computer. Pick your agent and operating system.

Before you start

uv (`curl -LsSf https://astral.sh/uv/install.sh | sh`)

~/Library/Application Support/Claude/claude_desktop_config.json

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

same format Cursor, GitHub Copilot CLI, Junie, JetBrains AI Assistant, Augment (Auggie CLI), Factory Droid, Kiro, Devin CLI +12

Values in angle brackets are placeholders. Restart Claude Desktop after editing its config.Claude Desktop docs

README

synced Oct 17, 2026

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