ClawHub

Astrology API

Data & APIs

Astrology API: generate natal charts, synastry, composite, transits, solar/lunar returns, progressions, directions, planetary positions, house cusps, aspects, lunar metrics, horoscopes, analysis reports, SVG/render charts, tarot, numerology, Vedic, Chinese astrology, human design, kabbalah, astrocartography, eclipses, palmistry, and fixed stars. Use when user asks about birth charts, horoscopes, zodiac signs, compatibility, planetary positions, moon phases, transits, astrological calculations, tarot readings, numerology, or any esoteric/astrological topic.

Install

openclaw skills install astroapi-skill

Astrology API Skill

When to Use

Use this skill when the user asks about:

  • Birth charts, natal charts, horoscopes
  • Zodiac compatibility, synastry, relationship analysis
  • Planetary positions, transits, aspects
  • Moon phases, lunar metrics, void of course
  • Solar/lunar returns, progressions, directions
  • Tarot card readings, spreads, interpretations
  • Numerology (core numbers, compatibility, comprehensive)
  • Vedic astrology (kundli, doshas, dashas, panchang)
  • Chinese astrology (bazi, ming gua, feng shui)
  • Human design (bodygraph, type, channels, gates)
  • Kabbalah (tree of life, birth angels, gematria)
  • Astrocartography (relocation, power zones, lines)
  • Fixed stars (positions, conjunctions)
  • Eclipses (upcoming, natal impact)
  • Palmistry (palm analysis, reading)
  • Daily/weekly/monthly/yearly horoscopes
  • Career, health, spiritual, psychological analysis
  • Chart rendering (SVG, PNG images)

Prerequisites

Before making any API call, verify:

  1. $ASTROLOGY_API_KEY environment variable is set
  2. curl is available on PATH

If the API key is missing, ask the user to set it:

export ASTROLOGY_API_KEY="your_token_here"

How It Works

  1. Gather data from the user depending on the request type:

    • For natal/personal: name, birth date (year, month, day), birth time (hour, minute), birth city + country code (2-letter ISO)
    • For synastry/compatibility: birth data for TWO people
    • For transits: natal data + transit date/time
    • For horoscopes by sign: just the zodiac sign name
    • For tarot: question or spread type
    • For numerology: full name + birth date

  2. Call the API using {baseDir}/scripts/astro-api.sh:

    bash {baseDir}/scripts/astro-api.sh POST /api/v3/charts/natal '{ ... }'

  3. Present results in a human-friendly format, highlighting key findings.

API Call Patterns

Natal Chart (most common)

bash {baseDir}/scripts/astro-api.sh POST /api/v3/charts/natal '{
  "subject": {
    "name": "John",
    "year": 1990, "month": 3, "day": 15,
    "hour": 14, "minute": 30, "second": 0,
    "city": "New York", "country_code": "US"
  },
  "options": {
    "house_system": "P",
    "zodiac_type": "Tropic",
    "language": "EN"
  }
}'

Synastry (compatibility)

bash {baseDir}/scripts/astro-api.sh POST /api/v3/charts/synastry '{
  "subject": {
    "name": "Person A",
    "year": 1990, "month": 3, "day": 15,
    "hour": 14, "minute": 30, "second": 0,
    "city": "New York", "country_code": "US"
  },
  "partner": {
    "name": "Person B",
    "year": 1992, "month": 7, "day": 20,
    "hour": 9, "minute": 0, "second": 0,
    "city": "London", "country_code": "GB"
  },
  "options": {"house_system": "P", "zodiac_type": "Tropic", "language": "EN"}
}'

Transit Snapshot

bash {baseDir}/scripts/astro-api.sh POST /api/v3/charts/transit '{
  "subject": {
    "name": "John",
    "year": 1990, "month": 3, "day": 15,
    "hour": 14, "minute": 30, "second": 0,
    "city": "New York", "country_code": "US"
  },
  "transit": {
    "year": 2026, "month": 2, "day": 12,
    "hour": 12, "minute": 0, "second": 0,
    "city": "New York", "country_code": "US"
  },
  "options": {"house_system": "P", "zodiac_type": "Tropic", "language": "EN"}
}'

Current Sky Data (no parameters needed)

bash {baseDir}/scripts/astro-api.sh GET /api/v3/data/now

Planetary Positions

bash {baseDir}/scripts/astro-api.sh POST /api/v3/data/positions '{
  "subject": {
    "name": "John",
    "year": 1990, "month": 3, "day": 15,
    "hour": 14, "minute": 30, "second": 0,
    "city": "New York", "country_code": "US"
  },
  "options": {"house_system": "P", "zodiac_type": "Tropic"}
}'

Lunar Metrics

bash {baseDir}/scripts/astro-api.sh POST /api/v3/data/lunar-metrics '{
  "subject": {
    "name": "now",
    "year": 2026, "month": 2, "day": 12,
    "hour": 12, "minute": 0, "second": 0,
    "city": "New York", "country_code": "US"
  }
}'

Daily Horoscope by Sign

bash {baseDir}/scripts/astro-api.sh POST /api/v3/horoscope/sign/daily '{
  "sign": "aries",
  "language": "EN"
}'

Personal Daily Horoscope

bash {baseDir}/scripts/astro-api.sh POST /api/v3/horoscope/personal/daily '{
  "subject": {
    "name": "John",
    "year": 1990, "month": 3, "day": 15,
    "hour": 14, "minute": 30, "second": 0,
    "city": "New York", "country_code": "US"
  },
  "language": "EN"
}'

Natal Analysis Report (AI-generated interpretation)

bash {baseDir}/scripts/astro-api.sh POST /api/v3/analysis/natal-report '{
  "subject": {
    "name": "John",
    "year": 1990, "month": 3, "day": 15,
    "hour": 14, "minute": 30, "second": 0,
    "city": "New York", "country_code": "US"
  },
  "options": {"house_system": "P", "zodiac_type": "Tropic", "language": "EN"}
}'

Render Chart as SVG

bash {baseDir}/scripts/astro-api.sh POST /api/v3/svg/natal '{
  "subject": {
    "name": "John",
    "year": 1990, "month": 3, "day": 15,
    "hour": 14, "minute": 30, "second": 0,
    "city": "New York", "country_code": "US"
  },
  "options": {"house_system": "P", "zodiac_type": "Tropic"}
}'

Tarot Card Draw

bash {baseDir}/scripts/astro-api.sh POST /api/v3/tarot/cards/draw '{
  "count": 3
}'

Numerology Core Numbers

bash {baseDir}/scripts/astro-api.sh POST /api/v3/numerology/core-numbers '{
  "full_name": "John Smith",
  "birth_date": "1990-03-15"
}'

Full endpoint reference: Read {baseDir}/references/api-endpoints.md for all 190+ endpoints with detailed parameters.

Default Options

When the user doesn't specify preferences, use these defaults:

  • House system: P (Placidus) — most common in Western astrology
  • Zodiac type: Tropic (Tropical) — Western standard
  • Language: EN (English) — override based on user's language
  • Tradition: universal — broadest coverage

Output Format

When presenting results to the user:

  1. Start with the highlights: Sun sign, Moon sign, Ascendant (Rising)
  2. Use plain language — translate astrological jargon
  3. Format positions as tables when showing multiple planets
  4. Highlight notable aspects (conjunctions, oppositions, squares, trines)
  5. For compatibility: lead with the overall score/summary
  6. For horoscopes: present the text naturally, don't dump raw JSON
  7. For chart images (SVG/render): save to a file and inform the user

Edge Cases

  • Birth time unknown: Use noon (12:00) and note that house positions and Moon degree may be less accurate
  • City not found: Ask for latitude/longitude instead. Use latitude and longitude fields instead of city/country_code
  • API errors (400/422): Parse the error message and explain to the user what's wrong (e.g., invalid date, missing field)
  • Large responses: For analysis reports, summarize the key points rather than showing everything
  • Language support: The API supports EN, RU, FR, DE, ES, IT, PT, and more — match the user's language when possible
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