---
title: "Generate Natal Report (PDF or HTML)"
method: POST
path: "/reports/natal"
tags: ["Reports"]
---

# Generate Natal Report (PDF or HTML)

`POST /reports/natal`

Render a Western tropical natal chart as a single-page A4 PDF (default) or live HTML (add `?format=html`). Includes Big Three (Sun/Moon/ASC), full planets table with houses + retrograde, all 12 house cusps, and major aspects. Set `whitelabel: true` to apply the caller's branding overrides. Languages: `uk` (default) or `en`. PDF URLs valid 24h via auto-cleanup cron; HTML mode streams directly without storage.

## Headers

- `X-Provider` 'openai' | 'anthropic' | 'google' | 'groq' | 'mistral' | 'openrouter' | 'deepseek' | 'together'
- `X-Provider-Key` string
- `X-Provider-Model` string

## Request body

- NatalReport
  - `chart` object, required — 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 — Birth latitude. Required here: the whole document is computed from it.
    - `longitude` number, required — Birth longitude. Required here: the whole document is computed from it.
    - `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
  - `language` 'uk' | 'en' | 'de' | 'ru' | 'pl' | 'es' | 'pt' | 'hi' | 'fr' | 'ko' | 'it' | 'ja' | 'id' | 'tr' | 'nl' | 'ro' | 'cs' | 'vi' | 'ar' | 'el' | 'hu'
  - `whitelabel` union
    - boolean
    - object
      - `companyName` string
      - `companyUrl` string, uri
      - `companyEmail` string, email
      - `companyMobile` string
      - `companyBio` string
      - `logoUrl` string, uri
      - `frontImage` string, uri
      - `textPrimaryColor` string
      - `textSecondaryColor` string
      - `backgroundColor` string
      - `themeColor` string — Accent colour, used for section heading text and inline emphasis.
      - `headingColor` string — Colour of the divider rule under each section heading (not the heading text, which is themeColor).
      - `footerText` string
      - `fontPairing` 'serif-sans' | 'sans-serif' | 'serif-only' | 'sans-only' | 'system'
      - `reportName` string
  - `enrich` boolean
  - `tone` 'warm' | 'professional' | 'concise'
  - `length` 'short' | 'medium' | 'long'

## Response `200`

Successful calculation

- object
  - `ok` boolean
  - `data` object
    - `url` string, nullable
    - `storage_key` string, nullable
    - `byte_length` number, nullable
    - `page_count` number, nullable
    - `duration_ms` number, nullable
    - `expires_at` string, nullable

## Other responses

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

## Changes

- **2026-08-18** `dd3764875e7a` — 1 info
  - added the new optional request property `chart/allOf[#/components/schemas/ChartInput]/ayanamsa`
- **2026-08-15** `e637d1a9911b` — 2 warning, 3 info
  - the `chart/allOf[#/components/schemas/ChartInput]/timezoneOffset` request property's max was set to `14.00`
  - the `chart/allOf[#/components/schemas/ChartInput]/timezoneOffset` request property's min was set to `-14.00`
  - added the new optional `header` request parameter `X-Provider`
  - added the new optional `header` request parameter `X-Provider-Key`
  - …1 more
- **2026-08-14** `994755209cea` — 2 breaking, 11 warning
  - added `#/components/schemas/ChartInput, subschema #2` to the `chart` request property `allOf` list
  - the `chart` request property type/format changed from `object`/`` to ``/``
  - removed the request property `chart/ayanamsaId`
  - removed the request property `chart/city`
  - …9 more
- **2026-08-11** `b0533bcc12c0` — 4 breaking, 4 warning, 2 info
  - the request property `chart/latitude` became not nullable
  - the request property `chart/longitude` became not nullable
  - the request property `chart/latitude` became required
  - the request property `chart/longitude` became required
  - …6 more

[Change history](https://skmtc.dev/astroway/apis/astroway-calculation-api/changes/reports/natal/post.md)

---

[API](https://skmtc.dev/astroway/apis/astroway-calculation-api.md) · [All operations](https://skmtc.dev/astroway/apis/astroway-calculation-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/astroway/astroway-calculation-api/revisions/8ab5a768b521/schema)