What is the key difference between CycleCalcs Astronomy and Astronomy Oracle?

CycleCalcs Astronomy belongs to the Aerospace & Astrodynamics category with cloud HTTP/SSE execution, while Astronomy Oracle belongs to the Aerospace & Astrodynamics category with local stdio execution.

How do I install CycleCalcs Astronomy or Astronomy Oracle in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are CycleCalcs Astronomy and Astronomy Oracle free or paid?

CycleCalcs Astronomy operates under a Free / Open Source model (No auth required). Astronomy Oracle operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

CycleCalcs Astronomy lists 0 tools with 0 views and 0 GitHub stars. Astronomy Oracle lists 3 tools with 5 views and 3 GitHub stars.

Can I use both CycleCalcs Astronomy and Astronomy Oracle together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

How do I install CycleCalcs Astronomy or Astronomy Oracle in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are CycleCalcs Astronomy and Astronomy Oracle free to use, or do they require API keys?

CycleCalcs Astronomy is listed under a Free / Open Source model with No auth required . Astronomy Oracle operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both CycleCalcs Astronomy and Astronomy Oracle at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both cyclecalcs-astronomy and gregario-astronomy-oracle as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, CycleCalcs Astronomy has a Quality Score of 41 /100 ( Fair ) with 0 views, 0 installs, and 0 GitHub stars. Astronomy Oracle holds a Quality Score of 61 /100 ( Good ) with 5 views, 1 installs, and 3 GitHub stars.

Side-by-Side Model Context Protocol Comparison

CycleCalcs Astronomy vs Astronomy Oracle

In-depth architectural comparison of the CycleCalcs Astronomy and Astronomy Oracle 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.

At a Glance & Executive Verdict

CycleCalcs Astronomy

Aerospace & Astrodynamics · Remote HTTP/SSE

Quality: 41/100 (Fair) | Auth: No auth required

Astronomy Oracle

Aerospace & Astrodynamics · Local stdio

Quality: 61/100 (Good) | Auth: No auth required

Verdict Summary: Choose CycleCalcs Astronomy if you need specialized Aerospace & Astrodynamics tools running via a hosted cloud SSE transport. Choose Astronomy Oracle if your workspace requires Aerospace & Astrodynamics integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose CycleCalcs Astronomy when:

You need dedicated capabilities in the Aerospace & Astrodynamics domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore CycleCalcs Astronomy Details

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

Feature & Specification Comparison

Specification	C CycleCalcs Astronomy Aerospace & Astrodynamics	Astronomy Oracle gregario Aerospace & Astrodynamics
Summary	Astronomy: sun, moon, planet, eclipse, twilight and star position calculations.	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
Category & Scope	Aerospace & Astrodynamics

Tools & Capabilities Breakdown

CycleCalcs Astronomy Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Astronomy Oracle Tools (3)

lookup_object

Look up a celestial object by Messier number (e.g. M31), NGC/IC designation (e.g. NGC7000), or common name (e.g. Andromeda Galaxy). Optionally compute visibility from a given location and time.

search_objects

Search and filter the celestial object catalog by type, constellation, magnitude, angular size, or catalog membership. Returns a formatted table of matching objects sorted by brightness.

plan_session

Generate an observing session plan for a given location and date. Returns the best celestial objects to observe grouped by time window (evening, midnight, pre-dawn), scored by observability.

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).

CycleCalcs Astronomy Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "cyclecalcs-astronomy": {
      "url": "https://www.cyclecalcs.com/api/mcp.html"
    }
  }
}

Astronomy Oracle Configuration

mcpServers (Claude Desktop / Cursor)

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

Frequently Asked Questions

CycleCalcs Astronomy is categorized under Aerospace & Astrodynamics and uses a remote streaming HTTP/SSE transport. In contrast, Astronomy Oracle belongs to Aerospace & Astrodynamics using local stdio subprocess. Select CycleCalcs Astronomy when you need capabilities focused on aerospace & astrodynamics and Astronomy Oracle when you require tools for aerospace & astrodynamics.

More alternatives to CycleCalcs Astronomy More alternatives to Astronomy Oracle Aerospace & Astrodynamics category hub