Birth charts, transits, moon phases and more from precise astronomical calculations. Natal Compass.
| Endpoint | https://natalcompass.com/mcp (streamable-http) |
|---|---|
| Registry version | 0.3.6 |
| Now | 7 tools · grade F (40) · pin ts_988cd428e2b3e8ba61e474b4bc240f8d · protocol 2025-06-18 |
| First / last listed | 2026-10-25 07:05 UTC / 2026-10-25 07:05 UTC |
| Grade over time | 2026-10-25: F (40), 7 tools |
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Tools: get_natal_chart get_transits get_transits_to_chart get_moon_phase get_retrogrades get_synastry get_solar_return
get_natal_chart | Computes a birth chart from a date, an optional time and a place: the sign and degree of the Sun, Moon, planets, lunar nodes, Lilith, Chiron and the Part of Fortune, the ascendant and midheaven, the twelve house cusps and the major aspects between planets. Use it when a person asks about their chart, their placements, their rising sign, their houses or their aspects. The birth place must be given params: date*, time, latitude*, longitude*, timezone, house_system, node_type, include_minor_aspects |
get_transits | Gives where the Sun, Moon and planets are on a date: the sign and degree of each, computed geocentrically for 00:00 UTC on that date, or for the current instant when no date is given. Use it, rather than web search, when a person asks where a planet is now, what the sky looks like on a date, or which sign the Moon is in today. Positions only: it does not say whether a planet is retrograde, and it params: date |
get_transits_to_chart | Relates the sky on a date to a specific birth chart: which transiting planets form major aspects to which natal points, with orbs, plus the transiting positions themselves. Aspects are to the natal planets and points (the lunar nodes, Lilith, Chiron and the Part of Fortune); aspects to the ascendant and midheaven are not included. Use it when a person asks how the planets on a given day, or today, params: date*, time, latitude*, longitude*, timezone, house_system, node_type, transit_date |
get_moon_phase | Gives the Moon on a date: the phase name, how much of the Moon is lit, its elongation from the Sun, the sign and degree of the Moon and of the Sun, and whether the Moon is void of course, with the time of its next major aspect and of its next sign change. Values are for 00:00 UTC on the date, or for the current instant when no date is given. Use it, rather than web search, when a person asks wheth params: date |
get_retrogrades | Lists the retrograde periods of Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto in a calendar year: when each planet stations retrograde and when it stations direct, as a UTC date and time to the minute. Use it when a person asks whether a planet is retrograde on a date, when a Mercury retrograde starts or ends, or which planets are retrograde in a year. The year is optional and d params: year |
get_synastry | Compares two birth charts: the major aspects between one person's Sun, Moon, planets and North Node and the other's, each with its orb. Use it when a person asks how two charts relate, which aspects run between two people's charts, or what one person's planet does to another's. It needs the birth details that get_natal_chart takes for each person, as person_a and person_b, with each birth place as params: person_a*, person_b*, include_minor_aspects |
get_solar_return | Computes a solar return chart: the moment in a given year when the Sun returns to its natal position, and the chart cast for that moment at a place, with the planets, the ascendant and midheaven, the twelve house cusps and the major aspects. Use it when a person asks about their solar return or their birthday chart for a year. It needs the birth date, an optional time and the birth place as latitu params: date*, time, latitude*, longitude*, timezone, year*, return_latitude, return_longitude, include_minor_aspects |
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