{"uid":"cap_x6xo3c-c61qoYcWZ2iX_y","slug":"western-natal-astrology-chart-api-6a42234e","name":"Western Natal Astrology Chart API","description":"Western natal astrology only: tropical planet placements by sign and degree with retrograde flags, Whole-Sign houses, the Ascendant and Midheaven angles and the major Ptolemaic aspects. Give a birth date, and for the angles a time, place and tz or utc_offset. Deterministic ephemeris, no LLM, no keys.","url":"https://api.agentstools.dev/personality/western","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["date"],"properties":{"tz":{"type":"string","description":"IANA timezone name for the birth time, such as America/New_York. Used to place the local time in UT. Alternatively pass utc_offset."},"lat":{"type":"number","description":"Birth latitude in degrees, north positive."},"lon":{"type":"number","description":"Birth longitude in degrees, east positive."},"date":{"type":"string","description":"Birth date in YYYY-MM-DD format, such as 1990-05-15."},"time":{"type":"string","description":"Birth time in HH:MM 24-hour local clock time. Optional; without it a no-time chart is returned and houses, the Ascendant and the exact Moon degree are flagged unavailable rather than fabricated."},"place":{"type":"string","description":"Birth place as free text, such as New York, USA. Geocoded to coordinates. Alternatively pass explicit lat and lon."},"utc_offset":{"type":"number","description":"UT offset of the birth time in hours, such as -4 or 3."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wBaOp1dF6tT5S0pRhnLdx","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns tropical planet placements by sign/degree, retrograde flags, Whole-Sign houses, Ascendant, Midheaven, and major Ptolemaic aspects for a birth date and optional time/place.","exampleAgentPrompt":"Can you calculate my western natal chart? I was born on May 15, 1990 at 7:30 AM in New York, USA — I need my planet signs and degrees, retrograde flags, Whole-Sign houses, my Ascendant and Midheaven, and the major aspects, using the America/New_York timezone.","exampleUseCases":[{"title":"Find rising sign and Midheaven","prompt":"I want to know my rising sign and Midheaven — I was born on March 3, 1985 at 11:45 PM in London, UK. Can you pull up my Ascendant and Midheaven angles using the Europe/London timezone?"},{"title":"Identify retrograde planets at birth","prompt":"Which planets were retrograde when I was born? My birthday is September 22, 1995 and I was born at 2:15 PM in Los Angeles, USA — please use the America/Los_Angeles timezone and show me any retrograde flags in my natal chart."},{"title":"Check Venus sign and natal aspects","prompt":"Can you tell me what sign my Venus is in and show me all the major aspects in my natal chart? I was born on July 8, 1978 at 6:00 AM in Paris, France — please use the Europe/Paris timezone."}],"resultDescription":"A JSON object containing tropical planet placements (sign, degree, retrograde flag) for all major planets, Whole-Sign house assignments, Ascendant and Midheaven angles, and major Ptolemaic aspects (conjunction, sextile, square, trine, opposition) — all computed deterministically from Swiss Ephemeris or equivalent, with no AI fabrication.","failureModes":["Missing required 'date' parameter returns a 400 error","Unrecognizable birth place text fails geocoding and returns an error","Providing time without place or coordinates returns angles as unavailable","Invalid date format (not YYYY-MM-DD) causes a parsing error","Unknown IANA timezone name causes a tz resolution error","Ambiguous place names may resolve to an incorrect location"],"whenToPreferThis":"Use this endpoint when you need only western tropical natal astrology (planet signs/degrees, Whole-Sign houses, Ascendant, Midheaven, Ptolemaic aspects) without Vedic or Chinese systems — it is cheaper and simpler than the multi-framework sibling endpoint. Prefer it for birth chart lookups, rising sign detection, retrograde identification, and aspect analysis using classical Western methods. It requires no API key and is fully deterministic.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:00:00.548Z","isFirstParty":false}