Cosmik vs Open Notify
A side-by-side look at the Cosmik and Open Notify MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Cosmik for aerospace & astrodynamics work over a hosted endpoint; choose Open Notify 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 Cosmik when
- You need dedicated capabilities in the Aerospace & Astrodynamics domain.
- You prefer a remote HTTP/SSE transport.
- You want tools like
get_next_launches, get_iss_passes, get_launch_news.
Choose Open Notify when
- You need dedicated capabilities in the Aerospace & Astrodynamics domain.
- You prefer a local stdio subprocess transport.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Aerospace & Astrodynamics | Aerospace & Astrodynamics |
| Quality signal | 53/100 · Good | 37/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | 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 | 2 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | 3 | Not listed |
| Full listing | View Cosmik | View Open Notify |
Tools & capabilities
Cosmik tools 3
get_next_launchesLive schedule of upcoming orbital rocket launches (SpaceX, NASA, Rocket Lab, ULA, Arianespace, China…) with liftoff times (UTC), pads, status and a live-tracking link. Optionally filter by provider/rocket name.get_iss_passesWhen the International Space Station will pass over a location in the next 3 days: start time (UTC), maximum elevation, duration, and whether the pass is in a good viewing window (evening/pre-dawn). Provide a city name OR latitude+longitude.get_launch_newsLatest rocket-launch news articles (previews and post-launch recaps) from Cosmik, optionally filtered by a search term (mission, rocket, or provider name).
Open Notify tools
No tool names declared yet. Check the project README from the listing page.
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.
Cosmik
{
"mcpServers": {
"cosmik": {
"url": "https://gocosmik.com/api/mcp"
}
}
}
Open Notify
{
"mcpServers": {
"open-notify": {
"command": "npx",
"args": [
"-y",
"@pipeworx/mcp-open-notify"
]
}
}
}
Frequently asked questions
Cosmik is categorized under Aerospace & Astrodynamics and uses a remote HTTP/SSE transport. Open Notify belongs to Aerospace & Astrodynamics and uses a local stdio subprocess. Pick Cosmik for aerospace & astrodynamics work and Open Notify 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.
Cosmik has no declared pricing — check the project's own site. Open Notify 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 cosmik and open-notify as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Cosmik has a quality signal of 53/100 (Good) with 2 views, 0 installs and 0 GitHub stars. Open Notify has 37/100 (Fair) with 1 views, 0 installs and 0 GitHub stars.