---
title: "createCustomDomain"
description: "Add a custom domain"
canonical: "https://pgbeam.com/docs/ts-sdk/projects/createCustomDomain"
last-updated: "2026-10-30T13:32:17.000Z"
---

# createCustomDomain

> Add a custom domain

URL: https://pgbeam.com/docs/ts-sdk/projects/createCustomDomain

{/* Auto-generated from OpenAPI. Do not edit. Run `pnpm generate:sdk-docs` to regenerate. */}

Registers a new custom domain for the project. Returns DNS verification instructions. Requires a Scale or Enterprise plan.

## Usage

```typescript
const result = await api.projects.createCustomDomain({
  pathParams: { project_id: "prj_xxx" },
  body: {
    domain: "db.example.com",
  },
});
```

## Parameters

| Parameter             | Type     | Required | Description                                           |
| --------------------- | -------- | -------- | ----------------------------------------------------- |
| pathParams.project_id | `string` | Yes      | Unique project identifier (prefixed, e.g. prj_xxx).   |
| body.domain           | `string` | Yes      | The custom domain name to add (e.g., db.example.com). |

## Response

`Promise<CustomDomain>`: custom domain created.

## Example

```typescript
import { PgBeamClient } from "pgbeam";

const client = new PgBeamClient({
  token: "pbu_...",
  baseUrl: "https://api.pgbeam.com",
});

const result = await client.api.projects.createCustomDomain({
  pathParams: { project_id: "prj_xxx" },
  body: {
    domain: "db.example.com",
  },
});
```

## Errors

| Status | Description                                                                                                                                                                                                                                                                                                                           |
| ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 400    | The request was rejected. `code` is `INVALID_INPUT`, and `errors` names the offending fields when the failure was a validation one.                                                                                                                                                                                                   |
| 401    | Missing or invalid authentication. `code` is `UNAUTHORIZED`.                                                                                                                                                                                                                                                                          |
| 403    | Custom domains require a Scale or Enterprise plan.                                                                                                                                                                                                                                                                                    |
| 404    | The resource does not exist, or the caller is not entitled to know that it does. `code` is `NOT_FOUND`.                                                                                                                                                                                                                               |
| 409    | The request conflicts with the current state. `code` distinguishes the cases: `RESOURCE_EXISTS` for a name or value already in use, `INVALID_STATE` for a resource that is no longer in a state that allows the operation, and `IDEMPOTENCY_KEY_REUSED` for a retry whose body does not match the request the key was first used for. |
| 413    | The request body exceeds the 2 MB limit. `code` is `PAYLOAD_TOO_LARGE`.                                                                                                                                                                                                                                                               |
| 415    | The request body is not JSON, or carries a body without declaring a Content-Type. `code` is `UNSUPPORTED_MEDIA_TYPE`.                                                                                                                                                                                                                 |
| 429    | Rate limited. `code` is `RATE_LIMITED`.                                                                                                                                                                                                                                                                                               |
| 500    | The request failed for a reason on our side. `code` is `INTERNAL_ERROR`. Quote `request_id` when reporting it.                                                                                                                                                                                                                        |