Ephemeris MCP vs Filesystem
A side-by-side look at the Ephemeris MCP and Filesystem MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Ephemeris MCP for aerospace & astrodynamics work as a local process; choose Filesystem for file systems as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Ephemeris MCP when
- You need dedicated capabilities in the Aerospace & Astrodynamics domain.
- You prefer a local stdio subprocess transport.
- You want tools like
get_planetary_positions.
Choose Filesystem when
- You need dedicated capabilities in the File Systems domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
path, head, tail.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Aerospace & Astrodynamics | File Systems |
| Quality signal | 45/100 · Fair | 85/100 · Excellent |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | No auth required |
| Pricing | Not declared | Free |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Verified |
| GitHub stars | 4 | 91,512 |
| Directory activity | 2 views 0 installs 0 upvotes | 9 views 0 installs 0 upvotes |
| Tools | 1 | 17 |
| Full listing | View Ephemeris MCP | View Filesystem |
Tools & capabilities
Ephemeris MCP tools 1
get_planetary_positionsReturns precise Tropical Zodiac positions for all planets, Sun, Moon, and chart angles.
Filesystem tools 17
pathheadtailpathscontenteditsoldTextnewTextdryRunsortBysourcedestination- +5 more on 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.
Ephemeris MCP
{
"mcpServers": {
"ephemeris-mcp": {
"command": "uvx",
"args": [
"ephemeris-mcp"
]
}
}
}
Filesystem
{
"mcpServers": {
"filesystem": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/server-filesystem"
]
}
}
}
Frequently asked questions
Ephemeris MCP is categorized under Aerospace & Astrodynamics and uses a local stdio subprocess. Filesystem belongs to File Systems and uses a local stdio subprocess. Pick Ephemeris MCP for aerospace & astrodynamics work and Filesystem for file systems.
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.
Ephemeris MCP has no declared pricing — check the project's own site. Filesystem is listed as free. Auth: no auth required. 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 ephemeris-mcp and filesystem as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Ephemeris MCP has a quality signal of 45/100 (Fair) with 2 views, 0 installs and 4 GitHub stars. Filesystem has 85/100 (Excellent) with 9 views, 0 installs and 91,512 GitHub stars.