## POST /api/v2/domains/{id}/glue-records

**Create or update a glue record**

Create or update a registry host object for a child nameserver under the domain. Use this only for child nameservers such as `ns1.example.com` on the `example.com` domain. `hostname` must be a fully qualified hostname under the domain being managed, 3-255 characters long. `ips` must contain 1-10 valid public IPv4 or IPv6 addresses; private, loopback, link-local, shared-address, and unspecified/special ranges are rejected by the legacy registry layer. Glue management is currently available for .se, .nu, and .test domains, with a registry limit of 13 host objects per domain. This endpoint does not change the domain nameserver set and does not create DNS zone A/AAAA records; use `POST /api/v2/domains/{id}/nameservers` to use a nameserver, and `POST /api/v2/dns-zones/{id}/records` for zone records.

### Related Endpoints

- `GET /api/v2/domains/{id}/glue-records`: List domain glue records
- `DELETE /api/v2/domains/{id}/glue-records/{hostname}`: Delete a glue record
- `GET /api/v2/domains/{id}`: Get domain details

### Headers

- `Accept`: application/json
- `Authorization`: Bearer YOUR_API_KEY
- Required API scope: `write:domains`
- `Content-Type`: application/json

### Parameters

- `id` (path, string, required): Public domain ID. Get it from GET /api/v2/domains `data[].id`. Do not invent this value; use the exact ID returned by the referenced API response. Example: `dom_01hxa3b4c5d6e7f8g9h0j1k2m3`

### Request Body

- `hostname` (string, required): Fully qualified child nameserver hostname under the domain, for example `ns1.example.com` for `example.com`. Example: `ns1.example.com`
- `ips` (array<string>, required): Public IPv4 or IPv6 addresses for the host object.

### Request Examples

#### Create child nameserver glue

```bash
curl -X POST "https://cloud.hostup.se/api/v2/domains/dom_01hxa3b4c5d6e7f8g9h0j1k2m3/glue-records" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -d '{
    "hostname": "ns1.example.com",
    "ips": [
      "203.0.113.10",
      "2001:db8::10"
    ]
  }'
```

```json
{
  "hostname": "ns1.example.com",
  "ips": [
    "203.0.113.10",
    "2001:db8::10"
  ]
}
```

### Response Schema

- `hostname` (string, required) Example: `ns1.example.com`
- `ips` (array<string>, required)

### Responses

#### 201 - Created or updated glue record.
```json
{
  "hostname": "ns1.example.com",
  "ips": [
    "203.0.113.10",
    "2001:db8::10"
  ]
}
```

#### 400 - Invalid request. The response body is an RFC 7807 Problem Details document.
```json
{
  "type": "https://developer.hostup.se/errors/invalid_request",
  "title": "Invalid request",
  "status": 400,
  "detail": "The request body failed validation.",
  "code": "invalid_request",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z",
  "errors": [
    {
      "pointer": "/items/0/domainName",
      "detail": "`domainName` is required.",
      "code": "invalid_request"
    }
  ]
}
```

#### 401 - Unauthorized. Authentication is required.
```json
{
  "type": "https://developer.hostup.se/errors/unauthorized",
  "title": "Unauthorized",
  "status": 401,
  "detail": "Authentication is required.",
  "code": "unauthorized",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 403 - Forbidden. The caller lacks a required scope or does not own the resource.
```json
{
  "type": "https://developer.hostup.se/errors/forbidden",
  "title": "Forbidden",
  "status": 403,
  "detail": "The caller lacks a required scope or does not own the resource.",
  "code": "forbidden",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 404 - Not found. The resource does not exist or is not owned by the caller.
```json
{
  "type": "https://developer.hostup.se/errors/not_found",
  "title": "Not found",
  "status": 404,
  "detail": "The requested resource could not be found.",
  "code": "not_found",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 429 - Rate limited. Retry after the limit resets. 429 responses include `Retry-After` seconds plus `X-RateLimit-*` headers.
```json
{
  "type": "https://developer.hostup.se/errors/rate_limit_exceeded",
  "title": "Too many requests",
  "status": 429,
  "detail": "Too many requests. Retry after the limit resets.",
  "code": "rate_limit_exceeded",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 500 - Internal error. Retry later or contact support if the issue persists.
```json
{
  "type": "https://developer.hostup.se/errors/internal_error",
  "title": "Internal server error",
  "status": 500,
  "detail": "An unexpected error occurred. Retry later or contact support if the issue persists.",
  "code": "internal_error",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```