Solar Storm Today MCP server

• Registry nametoday.solarstorm/solarstormverified in the MCP registry

The registry name sits under solarstorm.today. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-19
• Tools4
• Server calls itselfsolarstorm
• Server version1.0.0
• Protocol version2025-06-18

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 476 ms.

• Answeredmeasuring2 of the 7 daily checks it takes to print a share
• Median first answer544 ms
• Space in an agent's context≈ 273 tokensthe definitions of all its tools (4), which an agent carries on every turn
• Tool definitionsB · 79 of 100

• Parameters without a description: in 1 of 4
• Not saying whether it only reads or can destroy: 4 of 4

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The state of vendors' MCP servers: method and numbers →

• get_current_kp

  Current planetary Kp index: latest value, level (low/moderate/high/severe) and the observed 24-hour maximum.

• get_kp_forecast_3day

  Official NOAA 3-day geomagnetic forecast: the maximum expected Kp per calendar day (Europe/Berlin days).

• get_solar_flares_24h

  Solar X-ray activity of the past 24 hours from GOES: current flare class and the 24-hour peak class.

• get_aurora_visibility

  Aurora visibility outlook for a geographic latitude (degrees, e.g. 48.2 for Vienna): the Kp you need there, the expected maximum Kp in the next 24 h, and a verdict.