Exa MCP Server vs Nasa
A side-by-side look at the Exa MCP Server and Nasa MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Exa MCP Server for search & data extraction work as a local process; choose Nasa 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 Exa MCP Server when
- You need dedicated capabilities in the Search & Data Extraction domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
web_search_exa, web_fetch_exa.
Choose Nasa when
- You need dedicated capabilities in the Aerospace & Astrodynamics domain.
- You prefer a local stdio subprocess transport.
- You want tools like
get_apod, get_asteroids, get_mars_photos.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Search & Data Extraction | Aerospace & Astrodynamics |
| Quality signal | 73/100 · Great | 52/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | No auth required | Not declared |
| Pricing | Free | Not declared |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 5,163 | 0 |
| Directory activity | 11 views 0 installs 0 upvotes | 0 views 0 installs 0 upvotes |
| Tools | 2 | 9 |
| Full listing | View Exa MCP Server | View Nasa |
Tools & capabilities
Exa MCP Server tools 2
web_search_exaSearch the web for any topic and get clean, ready-to-use content. Best for: Finding current information, news, facts, people, companies, or answering questions about any topic. Returns: Clean text content from top search results. Query tips: describe the ideal page, not keywords. "blog post comparing React and Vue performance" not "React vs Vue". Use category:people / category:company to search through Linkedin profiles / companies respectively. If highlights are insufficient, follow up with web_fetch_exa on the best URLs.web_fetch_exaRead a webpage's full content as clean markdown. Use after web_search_exa when highlights are insufficient or to read any URL. Best for: Extracting full content from known URLs. Batch multiple URLs in one call. Returns: Clean text content and metadata from the page(s).
Nasa tools 9
get_apodGet the NASA Astronomy Picture of the Day with explanation. Optionally specify a date. Example: get_apod({ date: "2024-01-15", _apiKey: "DEMO_KEY" })get_asteroidsGet near-Earth asteroids approaching within a date range (max 7 days). Returns size, velocity, and miss distance. Example: get_asteroids({ start_date: "2024-01-01", end_date: "2024-01-07", _apiKey: "DEMO_KEY" })get_mars_photos"Show me photos from the Mars rover" / "Perseverance images from sol 1000" / "latest pictures from Mars" — raw images from NASA's Perseverance rover (Mars 2020), straight off the mars.nasa.gov feed. Filter by Martian sol and by camera. Returns image URLs at four resolutions, the sol, the UTC and Ma…search_nasa_imagesSearch the NASA Image and Video Library for images/videos of any subject — planets, missions, astronauts, launches, galaxies, etc. PREFER for "NASA photos of Jupiter", "images of the Apollo 11 mission", "pictures of a nebula". Returns title, description, date, NASA ID, media type, and a thumbnail U…get_solar_flaresGet recent solar flare events from NASA DONKI space-weather data. Returns each flare's class (e.g. C4.0, M1.8, X1.2), begin/peak/end times, source region, and active region number. Use for "recent solar flares", "is there solar activity / a solar storm", space-weather questions.donki_cme"Was there a coronal mass ejection this week?" / "is a CME heading for Earth?" — coronal mass ejections catalogued by NASA DONKI, the space-weather event database run by NASA's Community Coordinated Modeling Center. AUTHORITATIVE for CME occurrence and geometry: returns each eruption's start time,…donki_geomagnetic_storms"Was there a geomagnetic storm?" / "will there be an aurora tonight?" / "how strong was the Kp index?" — geomagnetic storm events from NASA DONKI, each with the full series of observed Kp index readings and their timestamps. AUTHORITATIVE for whether Earth's magnetic field was actually disturbed, a…donki_solar_energetic_particlesSolar energetic particle (SEP) events from NASA DONKI — bursts of high-energy protons arriving at Earth after a flare or CME. These are the events behind radiation warnings for polar airline routes, astronaut EVA holds and satellite single-event upsets. Returns the event time, the detecting instrum…donki_notifications"What is the current space weather forecast?" — the alerts, watches, warnings and weekly summary reports NASA DONKI issues to spacecraft operators. This is the narrative layer over the event catalogues: a human forecaster's text saying what happened, what is expected and what the impact is. Filter…
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.
Exa MCP Server
{
"mcpServers": {
"exa-labs-exa-mcp-server": {
"command": "npx",
"args": [
"-y",
"exa-mcp-server"
]
}
}
}
Nasa
{
"mcpServers": {
"nasa": {
"command": "npx",
"args": [
"-y",
"@pipeworx/mcp-nasa"
]
}
}
}
Frequently asked questions
Exa MCP Server is categorized under Search & Data Extraction and uses a local stdio subprocess. Nasa belongs to Aerospace & Astrodynamics and uses a local stdio subprocess. Pick Exa MCP Server for search & data extraction work and Nasa 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.
Exa MCP Server is listed as free. Auth: no auth required. Nasa 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 exa-labs-exa-mcp-server and nasa as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Exa MCP Server has a quality signal of 73/100 (Great) with 11 views, 0 installs and 5,163 GitHub stars. Nasa has 52/100 (Good) with 0 views, 0 installs and 0 GitHub stars.