## POST /api/v2/vps/{id}/actions/resize

**Resize PAYG Cloud VPS CPU and memory**

Resize CPU and memory for an existing pay-as-you-go Cloud VPS. Use this only when `GET /api/v2/vps/{id}` or `GET /api/v2/vps/{id}/details` shows `billing.isPayg: true` and `actions.canResize.allowed: true`. For a regular fixed-cycle VPS plan change, use `GET /api/v2/vps/{id}/actions/upgrade` and `POST /api/v2/vps/{id}/actions/upgrade` instead. For storage growth, use `POST /api/v2/vps/{id}/actions/add-disk` or `POST /api/v2/vps/{id}/actions/resize-disk`.

### Related Endpoints

- `GET /api/v2/vps/{id}`: Get VPS details
- `GET /api/v2/vps/{id}/details`: Get detailed VPS state
- `GET /api/v2/vps/payg/limits`: Get Cloud VPS PAYG resource limits

### Headers

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

### Parameters

- `id` (path, string, required): Public VPS ID. Get it from GET /api/v2/vps `data[].id`. Do not invent this value; use the exact ID returned by the referenced API response. Example: `vps_01hxa3b4c5d6e7f8g9h0j1k2m3`

### Request Body

- `cpuCores` (integer, required) [min: 1, max: 32] Example: `4`
- `memoryGb` (integer, required) [min: 1, max: 256] Example: `8`

### Request Examples

#### Resize to 4 CPU / 8 GB RAM

```bash
curl -X POST "https://cloud.hostup.se/api/v2/vps/vps_01hxa3b4c5d6e7f8g9h0j1k2m3/actions/resize" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -d '{
    "cpuCores": 4,
    "memoryGb": 8
  }'
```

```json
{
  "cpuCores": 4,
  "memoryGb": 8
}
```

### Response Schema

- `resized` (boolean, required) Example: `true`
- `resources` (object, required)
- `resources.cpuCores` (integer, required) Example: `4`
- `resources.memoryGb` (integer, required) Example: `8`
- `previousResources` (object, required)
- `previousResources.cpuCores` (integer,null, required) Example: `2`
- `previousResources.memoryGb` (integer,null, required) Example: `4`

### Responses

#### 200 - PAYG Cloud VPS resized immediately.
```json
{
  "resized": true,
  "resources": {
    "cpuCores": 4,
    "memoryGb": 8
  },
  "previousResources": {
    "cpuCores": 2,
    "memoryGb": 4
  }
}
```

#### 202 - Resize operation queued.
```json
{
  "operation": {
    "status": "queued",
    "jobId": "job_01hxa3b4c5d6e7f8g9h0j1k2m3",
    "pollUrl": "/api/jobs/job_01hxa3b4c5d6e7f8g9h0j1k2m3"
  }
}
```

#### 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"
}
```