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CycleCalcs Astronomy

Official registry Other

Read-only astronomy calculations: sun, moon, planets, eclipses, twilight and star positions.

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http cyclecalcs-astronomy 'https://www.cyclecalcs.com/mcp' --header 'Authorization: <Optional. Without a key, tools work up to 50 calls a day per network address; a key raises the daily limit. Bearer YOUR_KEY, where YOUR_KEY is a CycleCalcs API key from RapidAPI (the Basic plan is free): https://rapidapi.com/info-8KZIhinZ9/api/cyclecalcs-astronomy-api3>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "cyclecalcs-astronomy": {
            "type": "http",
            "url": "https://www.cyclecalcs.com/mcp",
            "headers": {
                "Authorization": "<Optional. Without a key, tools work up to 50 calls a day per network address; a key raises the daily limit. Bearer YOUR_KEY, where YOUR_KEY is a CycleCalcs API key from RapidAPI (the Basic plan is free): https://rapidapi.com/info-8KZIhinZ9/api/cyclecalcs-astronomy-api3>"
            }
        }
    }
}

Frequently asked questions

What is CycleCalcs Astronomy?

Read-only astronomy calculations: sun, moon, planets, eclipses, twilight and star positions.

How do I install CycleCalcs Astronomy?

It runs as a remote server. In Claude Code: claude mcp add --transport http cyclecalcs-astronomy 'https://www.cyclecalcs.com/mcp' --header 'Authorization: <Optional. Without a key, tools work up to 50 calls a day per network address; a key raises the daily limit. Bearer YOUR_KEY, where YOUR_KEY is a CycleCalcs API key from RapidAPI (the Basic plan is free): https://rapidapi.com/info-8KZIhinZ9/api/cyclecalcs-astronomy-api3>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does CycleCalcs Astronomy need an API key?

Yes. It expects Authorization, which you set in its configuration.

Who maintains CycleCalcs Astronomy?

It is published by com.cyclecalcs. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.