CycleCalcs Astronomy
com.cyclecalcs/astronomy
Read-only astronomy calculations: sun, moon, planets, eclipses, twilight and star positions.
Description as published in the official MCP registry.
Answers the MCP handshake and lists its tools. Checked 2026-10-04.
What we measured
| Endpoint | https://www.cyclecalcs.com/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake and lists its tools (800 ms) | our check, 2026-10-04 |
| Protocol version | 2026-07-28 | our check, 2026-10-04 |
| Tools (11) | astro_sky_today, astro_sun, astro_moon, astro_moon_phases, astro_positions, astro_rise_set, astro_eclipses, astro_dark_window, astro_planet_board, astro_planet_events, astro_find_place | tools/list, 2026-10-04 |
| Registry version | 1.1.0 · active · updated 2026-10-01 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows a real call went through, not just an opinion. How to file one.
Connect
claude mcp add --transport http astronomy https://www.cyclecalcs.com/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
Related servers
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- astronomy-oracle Astronomical catalog data and observing session planner. 13,000+ objects from OpenNGC.
Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name com.cyclecalcs/astronomy.