Astronomy Oracle vs Orbit Sentinel MCP

In-depth architectural comparison of the Astronomy Oracle and Orbit Sentinel MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Astronomy Oracle when:

• You need dedicated capabilities in the Aerospace & Astrodynamics domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: lookup_object, search_objects, plan_session.

Explore Astronomy Oracle Details

Choose Orbit Sentinel MCP when:

• You need dedicated capabilities in the Aerospace & Astrodynamics domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Free / Open Source).
• You have access to required keys: MCP_API_URL, MCP_API_KEY.
• Primary tools included: Semantic filing search, Entity profiles and dossiers, Spectrum holdings lookup.

Feature & Specification Comparison

Specification	Astronomy Oracle gregario Aerospace & Astrodynamics	Orbit Sentinel MCP viventine-space Aerospace & Astrodynamics
Summary	Accurate astronomical catalog data and observing session planner. 13,000+ deep-sky objects from OpenNGC with deterministic visibility, rise/transit/set, and alt/az calculations. npx astronomy-oracle	Search 419,000+ space regulatory filings from FCC, ITU, UNOOSA, and FAA — semantic search, entity dossiers, spectrum holdings, launch licenses, and filing alerts, powered by Orbit Sentinel. brew install --cask viventine-space/tap/orbit-sentinel-mcp
Category & Scope

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "gregario-astronomy-oracle": {
      "command": "npx",
      "args": [
        "-y",
        "astronomy-oracle"
      ]
    }
  }
}

{
  "mcpServers": {
    "viventine-space-orbit-sentinel-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote"
      ],
      "env": {
        "MCP_API_URL": "YOUR_MCP_API_URL_HERE",
        "MCP_API_KEY": "YOUR_MCP_API_KEY_HERE"
      }
    }
  }
}

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