Open Notify vs Spaceweather MCP
A side-by-side look at the Open Notify and Spaceweather MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Open Notify for aerospace & astrodynamics work as a local process; choose Spaceweather MCP for aerospace & astrodynamics as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Open Notify when
- You need dedicated capabilities in the Aerospace & Astrodynamics domain.
- You prefer a local stdio subprocess transport.
Choose Spaceweather MCP when
- You need dedicated capabilities in the Aerospace & Astrodynamics domain.
- You prefer a local stdio subprocess transport.
- You want tools like
get_conditions_now, get_kp_index, get_kp_forecast.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Aerospace & Astrodynamics | Aerospace & Astrodynamics |
| Quality signal | 37/100 · Fair | 48/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 0 | 0 |
| Directory activity | 1 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | Not listed | 11 |
| Full listing | View Open Notify | View Spaceweather MCP |
Tools & capabilities
Open Notify tools
No tool names declared yet. Check the project README from the listing page.
Spaceweather MCP tools 11
get_conditions_nowOne-call snapshot: Kp, Bz/Bt, wind speed/density, G/S/R, storm flag, summaryget_kp_indexObserved planetary Kp series (~1 week)get_kp_forecastNOAA 3-day Kp forecastget_solar_windL1 magnetic field + plasma (`window`: `1-day`/`7-day`)get_alertsRecent SWPC alerts/watches/warningsget_noaa_scalesG/S/R scales for today + 3 daysget_27day_outlookDaily F10.7 flux, Ap, largest Kp for 27 daysget_solar_flaresRecent GOES X-ray flares (C/M/X class events)get_radiation_stormCurrent proton flux + NOAA S-scale (radiation storm)get_solar_regionsToday's sunspot regions + C/M/X flare probabilitiesget_aurora_forecastOVATION aurora probability (pass lat/lon for a local %)
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Open Notify
{
"mcpServers": {
"open-notify": {
"command": "npx",
"args": [
"-y",
"@pipeworx/mcp-open-notify"
]
}
}
}
Spaceweather MCP
{
"mcpServers": {
"spaceweather-mcp": {
"command": "uvx",
"args": [
"spaceweather-mcp"
]
}
}
}
Frequently asked questions
Open Notify is categorized under Aerospace & Astrodynamics and uses a local stdio subprocess. Spaceweather MCP belongs to Aerospace & Astrodynamics and uses a local stdio subprocess. Pick Open Notify for aerospace & astrodynamics work and Spaceweather MCP for aerospace & astrodynamics.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Open Notify has no declared pricing — check the project's own site. Spaceweather MCP has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add open-notify and spaceweather-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Open Notify has a quality signal of 37/100 (Fair) with 1 views, 0 installs and 0 GitHub stars. Spaceweather MCP has 48/100 (Fair) with 1 views, 0 installs and 0 GitHub stars.