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External endpointresponds

CycleCalcs Astronomy

Astronomy: sun, moon, planet, eclipse, twilight and star position calculations.

Endpoint URL
https://www.cyclecalcs.com/mcp
Current status
responds
Last checked
Aug 17, 2026, 05:08 AM UTC
Check
MCP initialize · 8s limit
Latency
717 ms
Response record
2 of 2 rounds
Transport
streamable-http
Source
mcp_registry
Registry name
com.cyclecalcs/astronomy

Current observation

This endpoint answered at its latest recorded check.

What this server reports about itself

Self-reported at initialize. Not verified by Licium.

Server name
cyclecalcs-astronomy
Version
1.0.0
Capability keys
tools
Tool names
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
Instructions excerpt

Astronomy calculations from CycleCalcs (cyclecalcs.com): sun and moon times, planet positions and visibility, Mercury and Venus apparition events, eclipses, lunar phases, dark-sky observing windows, and place lookup. Every tool call needs a CycleCalcs API key from RapidAPI sent as "Authorization: Bearer YOUR_KEY" (the Basic plan is free; keys at https://rapidapi.com/info-8KZIhinZ9/api/cyclecalcs-astronomy-api3). Dates are ISO 8601 within 1700-2200. Locations are lat/lon in decimal degrees, or a place name the API resolves itself. Numeric field names carry their units (_deg, _km, _hours, _fraction) and coordinate fields state their frame (equatorial.j2000, ecliptic.true_of_date).

Reported Aug 17, 2026, 05:08 AM UTC.

Check history

Oldest to newest. Each row is one recorded check.

  1. responds
    MCP initialize · 8s limit · HTTP 200 · 492ms
  2. responds
    MCP initialize · 8s limit · HTTP 200 · 717ms
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