Tool catalog

The 29 tools of the Astrolabi MCP surface, grouped by what they do. Each tool page lists its methods, tier availability, and input schema.

Compute

astro_chartCast a chart at a specific moment + location. Single-chart compute primitive.
astro_aspectsCompute aspects within a chart or cross-aspects between two charts.
astro_momentAstrological qualities of a moment — phase, VOC, hours, mansions, eclipses.
astro_midpointsMidpoint computation and Uranian planetary-picture formulas.
astro_lotsArabic Parts / Hellenistic Lots library. Fortune free; all others paid.
astro_geocodePlace-name → coordinates + timezone. `basic` Free; `atlas` Paid (historical TZ + DST).
astro_date_convertCalendar and timezone conversions — julian-gregorian, timezone, easter-date.

astro_chart_derivedCharts derived from a natal chart via transformation techniques.
astro_chart_patternQualitative chart summaries — dominance, shape, temperament, astrodynes.
astro_dignitiesPlanetary dignity assessments (essential, accidental, almuten, hyleg, receptions).
astro_cultural_attributeCultural attributes from birthdate — numerology, Chinese zodiac, Celtic tree.

astro_find_eventsDate-range scans for astrological events — aspects, ingresses, eclipses, stations, etc.
astro_find_electionalElectional astrology — score date ranges against a criteria DSL.
astro_search_chartsCelebrity chart database lookup + filter search (Astrodatabank-grade).
astro_lookupReference lookup — Sabian symbols (Paid), astrology-term encyclopedia (Free).

astro_timelordHellenistic, Persian, and Vedic time-lord systems.
astro_progressionsSymbolic time-projection techniques: secondary, solar arc, tertiary, minor, primary directions.
astro_returnsPlanetary returns — each planet's next crossing of its natal longitude.

astro_render_wheelZodiac wheel renders — single, bi-, tri-, quadri-, or heliocentric wheel.
astro_render_aspectariumAspect grid visualization — standard, orb-weighted intensity, or two-chart synastry grid.
astro_render_ephemerisEphemeris renders — table (Free⌃ text / Paid SVG), circular, graphic-with-overlay, declination-axis graphic.
astro_render_calendarAstrological calendar renders — monthly grid or circular lunar phase.
astro_render_timelineTime-aligned visualizations — birthday, dasha, decennials, circumambulations, time-map.
astro_render_dialCosmobiology dials — single, multi-chart, midpoint tree, sort strip.
astro_render_mapGeographic chart renders — astrocartography, local space, eclipse paths, horizon.
astro_render_vedic_gridVedic divisional chart grid renders — D1..D60, North or South Indian layout.
astro_render_planetary_clockPlanetary clock face — rise, set, culminate for a date + location.
astro_render_planetary_cycleMercury / Venus / Mars synodic cycle renders (petals, synodic, promethean).
astro_render_moon_phase_illustrationStandalone moon-phase illustration (Free⌃ default palette).