Noaa Spaceweather MCP Server

io.github.cyanheads/noaa-spaceweather-mcp-server

answering

Noaa Spaceweather MCP Server is answering right now. Last checked 7 min ago. 89 installs a week from npm. It exposes 6 tools. Last commit 30 Jul 2026.

NOAA SWPC space weather: storm scales, Kp index, aurora forecasts, solar wind, activity, alerts.

Installs per day peak 314 · avg 29 · -27% w/w

a month agotoday

Uptime history 40 hours of history · worst hour 75%

40 hours agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

398 ms

Response time

average over 24h

Installs / week

npm and PyPI

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add noaa-spaceweather-mcp-server --transport http https://noaa-spaceweather.caseyjhand.com/mcp

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

{
  "mcpServers": {
    "noaa-spaceweather-mcp-server": {
      "url": "https://noaa-spaceweather.caseyjhand.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.noaa-spaceweather-mcp-server]
url = "https://noaa-spaceweather.caseyjhand.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "noaa-spaceweather-mcp-server": {
      "url": "https://noaa-spaceweather.caseyjhand.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "noaa-spaceweather-mcp-server": {
      "url": "https://noaa-spaceweather.caseyjhand.com/mcp"
    }
  }
}

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

noaa

noaa_spaceweather_get_alerts

Active SWPC alerts, watches, and warnings — parsed into structured records with product type, NOAA scale and level, issue time, validity window, and plain text. Covers geomagnetic storms, radio blackouts, and radiation storms. With active_only=false, also returns informational summaries, expired notices, and cancellations. max_age_hours controls how far back to look (default 48 h); the SWPC feed keeps all historical records and has no built-in expiry.

noaa_spaceweather_get_aurora_forecast

OVATION model aurora forecast for the next ~30–60 min: global grid of aurora probability percentages by latitude/longitude (1° resolution). With optional coordinates, returns the local aurora probability at the nearest grid point, the minimum Kp needed for aurora at that latitude, and a plain-language go/no-go verdict. Without coordinates, returns only global metadata. Data updates every ~5 minutes. Coordinates are geographic (WGS84), not geomagnetic.

noaa_spaceweather_get_conditions

Current space-weather snapshot: NOAA R/S/G storm scales (today + 3-day forecast), latest Kp index with its G-scale equivalent and aurora-visibility latitude, and a plain-language status summary. The quickest way to answer "is anything happening right now?" — use before deciding whether to drill into solar wind (noaa_spaceweather_get_solar_wind), aurora (noaa_spaceweather_get_aurora_forecast), or alert details (noaa_spaceweather_get_alerts).

noaa_spaceweather_get_kp_index

Planetary K-index (0–9 geomagnetic activity scale) — recent observed 3-hour values with their NOAA G-scale equivalents and aurora-latitude guidance, plus the 3-day Kp forecast series. Kp is the primary driver of aurora visibility and geomagnetic storm severity: Kp≥5 is G1, Kp≥7 is G3 (aurora to ~50°), Kp≥9 is G5 extreme. Use noaa_spaceweather_get_conditions for a combined snapshot including storm scales; use this tool when you need the Kp time series or forecast detail.

noaa_spaceweather_get_solar_activity

Solar flare and radiation storm picture: recent GOES X-ray flux with flare-class labels (A/B/C/M/X), 3-day flare-class probabilities (C/M/X), active solar regions with per-region flare probabilities, and GOES integral proton flux at ≥10 MeV with NOAA S-scale. For operators tracking HF radio blackout (R-scale, driven by X-ray) and radiation storm risk (S-scale, driven by protons). Active region data helps identify which region is driving current activity.

noaa_spaceweather_get_solar_wind

Real-time solar wind measurements from the active spacecraft at L1: proton speed (km/s), density (n/cm³), temperature (K), and the critical Bz component (southward Bz = negative = storm driver). Returns the recent plasma and magnetic field time series within the requested window, oldest first, each record tagged with the reporting spacecraft. Bz < −10 nT for sustained periods is a primary geomagnetic storm trigger — use alongside noaa_spaceweather_get_kp_index to see whether elevated solar wind has translated into a geomagnetic storm.

Endpoints

URL	Transport	State	Latency	Checked
https://noaa-spaceweather.caseyjhand.com/mcp	streamable-http	answering	425 ms	7 min ago

Noaa Spaceweather MCP Server — questions

Answers built from our own checks of this server.

What can Noaa Spaceweather MCP Server do?

It exposes 6 tools, read directly from the server on our last check. Among them: noaa_spaceweather_get_alerts, noaa_spaceweather_get_aurora_forecast, noaa_spaceweather_get_conditions, noaa_spaceweather_get_kp_index, noaa_spaceweather_get_solar_activity, noaa_spaceweather_get_solar_wind. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Noaa Spaceweather MCP Server working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 398 ms. The bar chart above shows every period we have measured.

How do I connect Noaa Spaceweather MCP Server?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Noaa Spaceweather MCP Server need an API key?

No. Noaa Spaceweather MCP Server completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Noaa Spaceweather MCP Server?

It answers our handshake in 398 ms on average, which is faster than 34% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use Noaa Spaceweather MCP Server?

The npm package @cyanheads/noaa-spaceweather-mcp-server was installed 89 times in the last week. Week over week that is -27%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Noaa Spaceweather MCP Server open source?

Yes — it is published under the Apache-2.0 licence, written in TypeScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.