io.github.cyanheads/noaa-spaceweather-mcp-server
noaa-spaceweather-mcp-server
NOAA SWPC space weather: storm scales, Kp index, aurora forecasts, solar wind, activity, alerts.
alive probed 2026-10-09 · HTTP 200
6tools
3.4ktokens in Claude Opus 5.5
3.5ktokens in Claude Code
1.7 %of a 200k context window
2.1ko200k_base estimate
234 msto initialize
67 msto list tools
- Endpoint
- https://noaa-spaceweather.caseyjhand.com/mcp (streamable-http)
- Host
- noaa-spaceweather.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- noaa-spaceweather-mcp-server 0.3.2
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 494 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cyanheads/noaa-spaceweather-mcp-server
- Registry
- active, updated 2026-10-09 · registry entry
- Reachable
- 7 of the last 7 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| noaa_spaceweather_get_solar_wind | 552 | 27 % |
| noaa_spaceweather_get_alerts | 409 | 20 % |
| noaa_spaceweather_get_solar_activity | 318 | 15 % |
| noaa_spaceweather_get_aurora_forecast | 286 | 14 % |
| noaa_spaceweather_get_kp_index | 266 | 13 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-09 11:18 | alive | 327 ms | 6 | 3.4k | 2.1k |
| 2026-10-05 14:39 | alive | 234 ms | 6 | 3.4k | 2.1k |
| 2026-10-05 00:33 | alive | 210 ms | 6 | 2.1k | |
| 2026-10-04 10:04 | alive | 259 ms | 6 | 2.1k | |
| 2026-10-04 07:57 | alive | 464 ms | 6 | 2.1k | |
| 2026-10-03 20:37 | alive | 956 ms | 6 | 2.1k | |
| 2026-10-03 17:53 | alive | 532 ms | 6 | 2.1k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.cyanheads/noaa-spaceweather-mcp-server)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.