Celestium: Cosmic Compass — accurate astrology & divination for AI agents, with engine-authored interpretations attached (not LLM guesswork; real ephemeris, verified arcminute-accurate). Includes practice actions: check_in (sky + moment verdict + matched ritual), ritual (step-by-step moon-phase practices), tarot (auditable draws), review (temporal review of a period against your chart). Actions: cosmic_weather, chart, positions, moon, moment_quality, retrograde, voc, planetary_hours, sunrise, ritual, tarot, check_in, natal_reading, iching, mayan, numerology, true_sky, event_debrief, composite, davison, relocation, relocation_score, travel, transits, synastry, timing, progressions, electional, horary, returns, timeline, synthesis, perfections, midpoints, harmonic, antiscia, declination, sidereal, heliacal, review, bazi, year_ahead, correlate, common_threads. Free tier: cosmic_weather, chart, positions, moon, moment_quality, retrograde, voc, planetary_hours, sunrise, ritual, tarot, check_in, natal_reading, iching, mayan, numerology, true_sky, event_debrief. Celestium Pro unlocks depth + relationship charts (synastry/composite/davison), astrocartography (relocation/travel), advanced techniques, and review.