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# Preview the cost of changing plan

POST https://api.americancloud.com/api/v1/wordpress/change-package/cost-estimate
Content-Type: application/json

Returns the prorated charge for moving to a different package, without changing anything. The charge covers the remainder of the current billing period and reflects any account discount.

Reference: https://americancloud.com/docs/api/api-reference/wordpress/get-change-package-estimate-wordpress

## Authentication

- `X-API-Client-ID` header (required) — API Client ID
- `X-API-Client-Secret` header (required) — API Client Secret

## Request

### Body (application/json)

This endpoint expects a ChangePackageDto.

- `packageLabel` (string, required) — New package label to upgrade to

## Response

### 200

Prorated cost of the plan change

- `proratedCharge` (double, required) — Amount charged now for the rest of the current billing period.
- `monthlyDifference` (double, required) — Difference between the new and current monthly rates, before any discount.
- `periodStart` (datetime, required) — Start of the period the prorated charge covers.
- `periodEnd` (datetime, required) — End of the period the prorated charge covers.
- `discount` (double, optional) — Amount taken off by an account discount. Omitted when no discount applies.

## Errors

### 400 Bad Request Error

Unknown package, or the package is not an upgrade

- `statusCode` (double, required) — HTTP status code.
- `message` (ApiErrorDtoMessage, required) — Human-readable error message. A single string for most errors, or an array of strings when the request failed multiple validation checks.
- `error` (string, optional) — Short HTTP error label.
- `code` (string, optional) — Machine-readable reason for the error. Match on this value rather than on `message`, which can be reworded at any time. Present on the errors that have more than one cause for the same status code; omitted otherwise.
- `errors` (list of ValidationErrorItemDto, optional) — Per-field validation details. Present on 400 responses produced by request-body validation; omitted otherwise.
- `snapshots` (list of BlockingSnapshotDto, optional) — The snapshots that block a delete. Present on a 409 whose `code` is `volume_has_snapshots`; omitted otherwise.

### 401 Unauthorized Error

Authentication credentials were missing or invalid.

- `statusCode` (double, required) — HTTP status code.
- `message` (ApiErrorDtoMessage, required) — Human-readable error message. A single string for most errors, or an array of strings when the request failed multiple validation checks.
- `error` (string, optional) — Short HTTP error label.
- `code` (string, optional) — Machine-readable reason for the error. Match on this value rather than on `message`, which can be reworded at any time. Present on the errors that have more than one cause for the same status code; omitted otherwise.
- `errors` (list of ValidationErrorItemDto, optional) — Per-field validation details. Present on 400 responses produced by request-body validation; omitted otherwise.
- `snapshots` (list of BlockingSnapshotDto, optional) — The snapshots that block a delete. Present on a 409 whose `code` is `volume_has_snapshots`; omitted otherwise.

### 403 Forbidden Error

The authenticated principal is not permitted to perform this action.

- `statusCode` (double, required) — HTTP status code.
- `message` (ApiErrorDtoMessage, required) — Human-readable error message. A single string for most errors, or an array of strings when the request failed multiple validation checks.
- `error` (string, optional) — Short HTTP error label.
- `code` (string, optional) — Machine-readable reason for the error. Match on this value rather than on `message`, which can be reworded at any time. Present on the errors that have more than one cause for the same status code; omitted otherwise.
- `errors` (list of ValidationErrorItemDto, optional) — Per-field validation details. Present on 400 responses produced by request-body validation; omitted otherwise.
- `snapshots` (list of BlockingSnapshotDto, optional) — The snapshots that block a delete. Present on a 409 whose `code` is `volume_has_snapshots`; omitted otherwise.

### 404 Not Found Error

The requested resource does not exist or is not accessible to the caller.

- `statusCode` (double, required) — HTTP status code.
- `message` (ApiErrorDtoMessage, required) — Human-readable error message. A single string for most errors, or an array of strings when the request failed multiple validation checks.
- `error` (string, optional) — Short HTTP error label.
- `code` (string, optional) — Machine-readable reason for the error. Match on this value rather than on `message`, which can be reworded at any time. Present on the errors that have more than one cause for the same status code; omitted otherwise.
- `errors` (list of ValidationErrorItemDto, optional) — Per-field validation details. Present on 400 responses produced by request-body validation; omitted otherwise.
- `snapshots` (list of BlockingSnapshotDto, optional) — The snapshots that block a delete. Present on a 409 whose `code` is `volume_has_snapshots`; omitted otherwise.

### 409 Conflict Error

The WordPress instance is not available for this operation. `code` is `provisioning_in_progress` while the site is still being set up — retry once it is ready — or `deletion_in_progress` while the site is being removed.

- `statusCode` (double, required) — HTTP status code.
- `message` (ApiErrorDtoMessage, required) — Human-readable error message. A single string for most errors, or an array of strings when the request failed multiple validation checks.
- `error` (string, optional) — Short HTTP error label.
- `code` (string, optional) — Machine-readable reason for the error. Match on this value rather than on `message`, which can be reworded at any time. Present on the errors that have more than one cause for the same status code; omitted otherwise.
- `errors` (list of ValidationErrorItemDto, optional) — Per-field validation details. Present on 400 responses produced by request-body validation; omitted otherwise.
- `snapshots` (list of BlockingSnapshotDto, optional) — The snapshots that block a delete. Present on a 409 whose `code` is `volume_has_snapshots`; omitted otherwise.

### 500 Internal Server Error

An unexpected error occurred on the server.

- `statusCode` (double, required) — HTTP status code.
- `message` (ApiErrorDtoMessage, required) — Human-readable error message. A single string for most errors, or an array of strings when the request failed multiple validation checks.
- `error` (string, optional) — Short HTTP error label.
- `code` (string, optional) — Machine-readable reason for the error. Match on this value rather than on `message`, which can be reworded at any time. Present on the errors that have more than one cause for the same status code; omitted otherwise.
- `errors` (list of ValidationErrorItemDto, optional) — Per-field validation details. Present on 400 responses produced by request-body validation; omitted otherwise.
- `snapshots` (list of BlockingSnapshotDto, optional) — The snapshots that block a delete. Present on a 409 whose `code` is `volume_has_snapshots`; omitted otherwise.

## Types

### ApiErrorDtoMessage

Human-readable error message. A single string for most errors, or an array of strings when the request failed multiple validation checks.

### ValidationErrorItemDto

- `field` (string, required) — Dotted path to the field that failed validation.
- `message` (string, required) — Human-readable validation message for this field.

### BlockingSnapshotDto

- `id` (string, required) — Snapshot ID.
- `name` (string, required) — Snapshot name.

## Examples

**Request**

```json
{
  "packageLabel": "wordpress-25"
}
```

**Response**

```json
{
  "proratedCharge": 0.48,
  "monthlyDifference": 15,
  "periodStart": "2026-08-12T20:53:16.000Z",
  "periodEnd": "2026-08-17T23:59:59.000Z",
  "discount": 2.04
}
```

**SDK Code**

```python
import requests

url = "https://api.americancloud.com/api/v1/wordpress/change-package/cost-estimate"

payload = { "packageLabel": "wordpress-25" }
headers = {
    "X-API-Client-ID": "<apiKey>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.americancloud.com/api/v1/wordpress/change-package/cost-estimate';
const options = {
  method: 'POST',
  headers: {'X-API-Client-ID': '<apiKey>', 'Content-Type': 'application/json'},
  body: '{"packageLabel":"wordpress-25"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.americancloud.com/api/v1/wordpress/change-package/cost-estimate"

	payload := strings.NewReader("{\n  \"packageLabel\": \"wordpress-25\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("X-API-Client-ID", "<apiKey>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.americancloud.com/api/v1/wordpress/change-package/cost-estimate")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["X-API-Client-ID"] = '<apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"packageLabel\": \"wordpress-25\"\n}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.americancloud.com/api/v1/wordpress/change-package/cost-estimate")
  .header("X-API-Client-ID", "<apiKey>")
  .header("Content-Type", "application/json")
  .body("{\n  \"packageLabel\": \"wordpress-25\"\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.americancloud.com/api/v1/wordpress/change-package/cost-estimate', [
  'body' => '{
  "packageLabel": "wordpress-25"
}',
  'headers' => [
    'Content-Type' => 'application/json',
    'X-API-Client-ID' => '<apiKey>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.americancloud.com/api/v1/wordpress/change-package/cost-estimate");
var request = new RestRequest(Method.POST);
request.AddHeader("X-API-Client-ID", "<apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"packageLabel\": \"wordpress-25\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "X-API-Client-ID": "<apiKey>",
  "Content-Type": "application/json"
]
let parameters = ["packageLabel": "wordpress-25"] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.americancloud.com/api/v1/wordpress/change-package/cost-estimate")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```