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Read-only astronomy calculations: sun, moon, planets, eclipses, twilight and star positions.
CycleCalcs Astronomy is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 100/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding CycleCalcs Astronomy to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
mcp add com.cyclecalcs/astronomy https://www.cyclecalcs.com/mcpReview the upstream source before running this command.
{
"_meta": {
"io.modelcontextprotocol.registry/official": {
"status": "active",
"isLatest": true,
"updatedAt": "2026-10-01T00:17:16.360225Z",
"publishedAt": "2026-10-01T00:17:16.360225Z",
"statusChangedAt": "2026-10-01T00:17:16.360225Z"
}
},
"server": {
"name": "com.cyclecalcs/astronomy",
"title": "CycleCalcs Astronomy",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://www.cyclecalcs.com/mcp",
"type": "streamable-http",
"headers": [
{
"name": "Authorization",
"isSecret": true,
"description": "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"
}
]
}
],
"version": "1.1.0",
"websiteUrl": "https://www.cyclecalcs.com/api/mcp.html",
"description": "Read-only astronomy calculations: sun, moon, planets, eclipses, twilight and star positions."
}
}