---
title: "POST /api/builder/{builder_id}/domains/"
method: POST
path: "/api/builder/{builder_id}/domains/"
tags: ["Builder domains"]
---

# POST /api/builder/{builder_id}/domains/

`POST /api/builder/{builder_id}/domains/`

Creates a new domain for an application builder

## Path parameters

- `builder_id` integer, required

## Headers

- `ClientSessionId` string, uuid

## Request body

- union
  - CustomDomainCreateDomain
    - `type` 'custom' | 'sub_domain', required — * `custom` - custom * `sub_domain` - sub_domain
    - `domain_name` string, required
  - SubDomainCreateDomain
    - `type` 'custom' | 'sub_domain', required — * `custom` - custom * `sub_domain` - sub_domain
    - `domain_name` string, required

## Response `200`

- union
  - CustomDomainDomain
    - `id` integer, required
    - `type` string, required — The type of the domain.
    - `domain_name` string, required
    - `order` integer, required — Lowest first.
    - `builder_id` integer, required
    - `last_published` string, date-time, nullable — Last publication date of this domain
  - SubDomainDomain
    - `id` integer, required
    - `type` string, required — The type of the domain.
    - `domain_name` string, required
    - `order` integer, required — Lowest first.
    - `builder_id` integer, required
    - `last_published` string, date-time, nullable — Last publication date of this domain

## Other responses

- `400`
- `404`

---

[API](https://skmtc.net/baserow/apis/baserow-api-spec.md) · [All operations](https://skmtc.net/baserow/apis/baserow-api-spec/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/baserow/baserow-api-spec/versions/0c490e5b0c7f/schema)