space-mcp-server

An MCP server (stdio-based) that exposes NASA/space-related tools to AI agents, including APOD, NASA image search, exoplanets, space weather (DONKI), Mars rover photos/info, near-Earth objects (NeoWs), asteroid orbital details, Earth imagery (EPIC), and natural events (EONET).

Evaluated Apr 04, 2026 (0d ago)
Homepage ↗ Repo ↗ Ai Ml mcp mcp-server python nasa space-data agent-tools tool-calling astronomy
⚙ Agent Friendliness
63
/ 100
Can an agent use this?
🔒 Security
46
/ 100
Is it safe for agents?
⚡ Reliability
19
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
74
Documentation
62
Error Messages
0
Auth Simplicity
80
Rate Limits
70

🔒 Security

TLS Enforcement
60
Auth Strength
45
Scope Granularity
20
Dep. Hygiene
55
Secret Handling
50

Security posture relies largely on upstream public NASA APIs. The server is configured via NASA_API_KEY env var; README does not mention secret redaction/logging practices, TLS/transport details for outbound calls, or any internal auth/authorization or fine-grained access control for MCP tool usage. No evidence of additional security features (scopes, tenant isolation, audit logging) in the provided materials.

⚡ Reliability

Uptime/SLA
0
Version Stability
25
Breaking Changes
20
Error Recovery
30
AF Security Reliability

Best When

You want an agent to call curated, read-only NASA/space datasets via MCP for lightweight automation and research.

Avoid When

You need strict operational guarantees, robust per-request authorization controls, or a documented stable public contract/versioned schemas beyond basic MCP tool definitions.

Use Cases

  • Letting an AI agent retrieve and summarize NASA space data (e.g., APOD, exoplanets)
  • Building space/astronomy chat or research assistants with tool-augmented browsing
  • Automating workflows that fetch imagery/events/orbital data for analysis or reporting
  • Exploration/education bots that can fetch up-to-date space content

Not For

  • High-throughput production APIs requiring guaranteed latency/SLAs
  • Use as a general-purpose data platform beyond the specific NASA datasets it wraps
  • Security-sensitive applications that require strong tenant isolation or custom authorization policies beyond upstream APIs

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
Yes
SDK
No
Webhooks
No

Authentication

Methods: NASA API key via NASA_API_KEY environment variable (DEMO_KEY optional)
OAuth: No Scopes: No

No separate auth/authorization is described for the MCP server itself; access control appears to rely on the upstream NASA API key requirement for some tools.

Pricing

Free tier: No
Requires CC: No

Pricing is not for the MCP server; upstream NASA API has rate limits for DEMO_KEY vs registered keys (e.g., 30/hour for DEMO, 1000/hour registered). Other referenced APIs are described as no limit.

Agent Metadata

Pagination
none
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • Upstream NASA rate limits apply; agents may receive failures when limits are hit (especially with DEMO_KEY).
  • Some sources are described as 'no limit' but MCP server may still need its own backoff/timeouts (not documented).
  • Tool inputs/outputs are not shown in the README; agents may need to infer schemas or rely on MCP-provided JSON schema/tool definitions at runtime.
  • Because it’s stdio-based MCP, deployment requires running the server process alongside the agent runtime and providing env vars (NASA_API_KEY).

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Scores are editorial opinions as of 2026-04-04.

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