CycleCalcs Astronomy
mcp remote · streamable-http · v1.1.0 · source: crawl
https://www.cyclecalcs.com/mcp
Read-only astronomy calculations: sun, moon, planets, eclipses, twilight and star positions.
Works
100
Verified Oct 31, 2026 · p50 257 ms · p95 328 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'cyclecalcs-astronomy' |
| tools_listed | 15 | pass | 11 tools |
| schema_complete | 15 | pass | 11 of 11 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 257 ms |
| latency_p95 | 5 | pass | p95 328 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (11)
| Name | Description | Schema |
|---|---|---|
astro_sky_today | One-call snapshot of the whole sky for a place and moment: moon phase and illumination, which planets are up and worth looking at, the next eclipse, and (with a location) sun times. Reach for this fir | typed |
astro_sun | The complete solar day for one location: sunrise, sunset, solar noon, day length, civil, nautical and astronomical twilight boundaries, and explicit polar day/night status at high latitudes. Location | typed |
astro_moon | The Moon at an instant or as a daily series: phase name and angle, illuminated fraction, distance, apparent size, libration, bright limb, and the next quarter phases. A location adds rise/set and alti | typed |
astro_moon_phases | Every new moon, quarter and full moon in a window (or the next few from a date): each with its exact instant, distance, apparent size, supermoon classification under both competing definitions, tradit | typed |
astro_positions | Exact positions for up to 20 bodies at an instant or over a time grid: right ascension and declination in both J2000 and of-date frames, ecliptic longitude and latitude, distance, and, with a location | typed |
astro_rise_set | Rise, upper transit, set and lower transit for one body at one location, with an explicit status at extreme latitudes (circumpolar, never rises) instead of missing values. Accepts fixed radec targets. | typed |
astro_eclipses | Solar and lunar eclipses: the next or previous from a date, or all in a range, with type, magnitude, obscuration, Saros series and global geometry. A solar eclipse also carries a computed hybrid flag | typed |
astro_dark_window | The genuinely dark, moonless observing window for a night: astronomical night intersected with the Moon being down, ranked across up to 62 nights with a trend. The right tool for "when should I starga | typed |
astro_planet_board | All eight planets in one call for a date and optional location: constellation, magnitude, apparent size, elongation from the Sun, morning or evening sky, retrograde state with the next station, rise/s | typed |
astro_planet_events | Dated planet events. For Mercury and Venus, the apparition cycle: inferior and superior conjunctions, greatest eastern and western elongations, peak brightness (a Venus-only event: Mercury's brightnes | typed |
astro_find_place | Resolve a place name to coordinates, region, country, IANA timezone and a stable place_id, or reverse-look-up the nearest places to a lat/lon. Results are GeoNames data (CC BY 4.0); the response carri | typed |
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[](https://app.agent-xm.com/a/com-cyclecalcs-astronomy)
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