---
title: "Human Design Chart"
method: POST
path: "/human-design"
tags: ["Human Design"]
---

# Human Design Chart

`POST /human-design`

Calculate a full Human Design BodyGraph chart: type, strategy, authority, profile, definition, incarnation cross, centers, channels, and gate activations. Centre identifiers are PascalCase with no separator and are stable: Head, Ajna, Throat, G, Heart, SolarPlexus, Spleen, Sacral, Root. `channels[].centerA` and `centerB` use the same nine. These identifiers are English and have no localised twin yet, unlike the sign and planet names on /public/moon-phase.

## Request body

- ChartInput — Birth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss), latitude and longitude in decimal degrees. The short forms lat, lon, lng and tz are rejected with 400 INVALID_FIELD; pass the full names. timezoneOffset is hours from UTC and defaults to 0, meaning UTC. city is a display label only: nothing here geocodes it, so it never stands in for coordinates.
  - `date` string, required
  - `time` string, required
  - `timezoneOffset` number, nullable — Hours from UTC at the given moment, not minutes. Fractional zones are hours too: 5.5 for India, 5.75 for Nepal, -3.5 for Newfoundland. Defaults to 0, meaning UTC.
  - `latitude` number, required
  - `longitude` number, required
  - `houseSystem` string
  - `name` string
  - `city` string
  - `zodiacType` 'tropical' | 'sidereal'
  - `ayanamsaId` number, nullable
  - `ayanamsa` 'fagan-bradley' | 'lahiri' | 'de-luce' | 'raman' | 'krishnamurti' | 'kp' | 'yukteshwar' | 'jn-bhasin' | 'true-citra' | 'djwhal-khul' — Sidereal school by name. Lahiri when omitted. Equivalent to ayanamsaId; send either.
  - `cosmogram` boolean

## Response `200`

Successful calculation

- object
  - `ok` boolean
  - `data` object
    - `input` object, nullable
      - `name` string, nullable
      - `date` string, nullable
      - `time` string, nullable
      - `timezoneOffset` number, nullable
      - `latitude` number, nullable
      - `longitude` number, nullable
      - `houseSystem` string, nullable
      - `city` string, nullable
      - `cosmogram` boolean, nullable
    - `type` string, nullable
    - `strategy` string, nullable
    - `notSelfTheme` string, nullable
    - `authority` string, nullable
    - `profile` object, nullable
      - `profile` string, nullable
      - `personalityLine` number, nullable
      - `designLine` number, nullable
      - `geometry` string, nullable
    - `definition` string, nullable
    - `cross` object, nullable
      - `name` string, nullable
      - `type` string, nullable
      - `gates` number[], nullable
    - `activations` object[], nullable
      - `planet` string, nullable
      - `planetId` number, nullable
      - `gate` number, nullable
      - `line` number, nullable
      - `color` number, nullable
      - `tone` number, nullable
      - `base` number, nullable
      - `longitude` number, nullable
      - `isPersonality` boolean, nullable
    - `personalityActivations` object[], nullable
      - `planet` string, nullable
      - `planetId` number, nullable
      - `gate` number, nullable
      - `line` number, nullable
      - `color` number, nullable
      - `tone` number, nullable
      - `base` number, nullable
      - `longitude` number, nullable
      - `isPersonality` boolean, nullable
    - `designActivations` object[], nullable
      - `planet` string, nullable
      - `planetId` number, nullable
      - `gate` number, nullable
      - `line` number, nullable
      - `color` number, nullable
      - `tone` number, nullable
      - `base` number, nullable
      - `longitude` number, nullable
      - `isPersonality` boolean, nullable
    - `centers` object[], nullable
      - `name` string, nullable
      - `defined` boolean, nullable
      - `open` boolean, nullable
      - `gates` number[], nullable
      - `activeGates` number[], nullable
    - `channels` object[], nullable
      - `gate1` number, nullable
      - `gate2` number, nullable
      - `centerA` string, nullable
      - `centerB` string, nullable
      - `activatedBy` string[], nullable
    - `designJd` number, nullable
    - `personalityJd` number, nullable

## Other responses

- `400` — Validation error
- `401` — Missing or invalid API key

---

[API](https://skmtc.net/astroway/apis/astroway-calculation-api.md) · [All operations](https://skmtc.net/astroway/apis/astroway-calculation-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/astroway/astroway-calculation-api/revisions/6828e5609564/schema)