Auseklis Astrology
Computes astrological data from a real ephemeris so Claude stops making up planet positions. Exposes twelve tools including natal charts, transits, synastry, progressions, returns, retrograde periods, eclipses, and exact aspect timing. Handles local birth times with full IANA timezone support and offers tropical or sidereal zodiacs with multiple house systems (whole sign, Placidus, Porphyry, equal). Built on astronomy-engine with accuracy to one arcminute, no API keys or external data files required. Runs locally via npx or deploys as a Cloudflare Worker for remote access. MIT licensed specifically to avoid AGPL ephemeris restrictions, making it safe to embed in commercial services. Reach for this when you need precise astronomical calculations for astrology work without hallucinated positions.
- GitHub stars
- 1
- tools
- 12
- transport
- STDIO
- last updated
- Jul 10, 2026
Tools
12 toolsPublic tool metadata for what this MCP can expose to an agent.
get_planet_positionPosition of one body/point at a moment (sign, degree, speed, retrograde)
Position of one body/point at a moment (sign, degree, speed, retrograde)
No parameter schema in public metadata yet.
compute_natal_chartFull birth chart: 13 points, houses, angles, Part of Fortune, aspects
Full birth chart: 13 points, houses, angles, Part of Fortune, aspects
No parameter schema in public metadata yet.
compute_transitsAspects from the current (or any) sky to a natal chart
Aspects from the current (or any) sky to a natal chart
No parameter schema in public metadata yet.
compute_progressionsSecondary progressions (day-for-a-year)
Secondary progressions (day-for-a-year)
No parameter schema in public metadata yet.
compute_synastryCross-chart aspects between two people
Cross-chart aspects between two people
No parameter schema in public metadata yet.
compute_composite_chartMidpoint composite chart of a relationship
Midpoint composite chart of a relationship
No parameter schema in public metadata yet.
find_returnsSolar/lunar/planetary returns (exact moments)
Solar/lunar/planetary returns (exact moments)
No parameter schema in public metadata yet.
get_moon_phasePhase, illumination, Moon sign, next four quarters
Phase, illumination, Moon sign, next four quarters
No parameter schema in public metadata yet.
find_eclipsesLunar/solar eclipses with signs, incl. local visibility
Lunar/solar eclipses with signs, incl. local visibility
No parameter schema in public metadata yet.
find_retrograde_periodsStation retrograde/direct moments for any planet
Station retrograde/direct moments for any planet
No parameter schema in public metadata yet.
find_sign_ingressesWhen a body changes signs (equinoxes, Saturn ingresses, …)
When a body changes signs (equinoxes, Saturn ingresses, …)
No parameter schema in public metadata yet.
find_aspect_timesExact moment a transit perfects ("when does Saturn square my Sun?")
Exact moment a transit perfects ("when does Saturn square my Sun?")
No parameter schema in public metadata yet.
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auseklis
Astrology MCP server — natal charts, transits, synastry, progressions, returns, eclipses, retrogrades, moon phases. Computed from a real ephemeris, so AI agents stop hallucinating planet positions.
Named after the Latvian morning star. MIT-licensed with no AGPL ephemeris data — see Licensing.
Tools
Details
- Repository
- github.com/igmizo/auseklis
- Package
auseklis- Transport
- STDIO
- Registry
- MCP registry, active