---
title: "Western Natal Birth Chart (西洋本命星盤)"
method: GET
path: "/api/trpc/astrology.natalChart"
tags: ["Western"]
---

# Western Natal Birth Chart (西洋本命星盤)

`GET /api/trpc/astrology.natalChart`

## Request

- Base URL: `https://api.asktian.com`
- URL: `https://api.asktian.com/api/trpc/astrology.natalChart`
- Auth: HTTP bearer

The complete Western natal birth chart — the foundational deliverable every predictive layer (progressions, solar return, transits) is built on. From birth date, time and place it returns all TEN planets in their signs AND houses, the four angles (Ascendant, Midheaven, Descendant, Imum Coeli), the full Ptolemaic aspect grid (conjunction/sextile/square/trine/opposition, with applying/separating), each planet's essential dignity (domicile/exaltation/detriment/fall/peregrine) and retrograde state, the chart ruler, the lunar phase, and the elemental / modal / polarity / hemisphere / quadrant balance. Choose Placidus (default), Whole-Sign or Equal houses. Tropical, geocentric, on the shared Meeus ephemeris — the same positions the rest of the Western engine is gold-locked against (Sun & Moon match Einstein's chart to the arcminute). Honest: a symbolic language for reflection, not a predictive science; not medical, legal or financial advice.

Cost: 1 TIAN Points per call. tRPC procedure `astrology.natalChart`.

## Query parameters

- `input` string

## Response `200`

tRPC result envelope

- TrpcResult: tRPC HTTP response envelope.
  - `result` object
    - `data` object: The procedure's return value (system-specific).

---

[API](https://skmtc.dev/asktian/apis/asktian-metaphysics-api.md) · [All operations](https://skmtc.dev/asktian/apis/asktian-metaphysics-api/llms.txt) · [OpenAPI document](https://skmtc.dev/asktian/apis/asktian-metaphysics-api/revisions/3c8fdc979206?raw)