---
title: "Get region hierarchy"
method: GET
path: "/region/hierarchy"
tags: ["Regions"]
---

# Get region hierarchy

`GET /region/hierarchy`

Retrieve all regions as a nested tree structure based on parent-child relationships

## Query parameters

- `locale` 'en' | 'ar'

## Response `200`

Region hierarchy retrieved successfully

- RegionHierarchyItem[]
  - `id` string, required — Unique identifier for the region
  - `slug` string, required — URL-friendly identifier
  - `primaryName` string, required — Primary display name
  - `secondaryName` string — Secondary display name (e.g. Arabic)
  - `numberOfAuthors` integer, required — Number of authors in this region
  - `numberOfBooks` integer, required — Number of books in this region
  - `children` RegionHierarchyItem[] — Child regions

---

[API](https://skmtc.dev/usul/apis/usul-api.md) · [All operations](https://skmtc.dev/usul/apis/usul-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/usul/usul-api/revisions/b4f2df3e5842/schema)