# Custom charge with Ecwid billing

<mark style="color:blue;">`POST`</mark> `https://app.ecwid.com/api/v3/{storeId}/billing/transactions`&#x20;

### Required access scopes

Your app must have the following **access scopes** to make this request: `charge`&#x20;

### Path params

All path params are required.

| Param   | Type   | Description     |
| ------- | ------ | --------------- |
| storeId | number | Ecwid store ID. |

### Query params

Some query params are **required**.

<table data-full-width="false"><thead><tr><th width="187">Name</th><th width="97">Type</th><th>Description</th></tr></thead><tbody><tr><td>amount</td><td>number</td><td>Charge amount that can be rounded to two decimal points, for example, <code>24.99</code>.<br><br>Maximum charge amount <em>in one request</em> is equal to <code>500</code> USD.<br>Maximum charge amount <em>in one day for one store</em> is equal to <code>5000</code> USD.<br><br><strong>Required</strong></td></tr><tr><td>currency</td><td>string</td><td><p>Charge currency. You can charge in any available currency, even if a store uses another one.</p><p><br>One of: <code>USD</code>, <code>EUR</code>, <code>MXN</code>, <code>INR</code>, <code>GBP</code>, <code>AUD</code>. <br><br><strong>Required</strong></p></td></tr><tr><td>description</td><td>string</td><td>Describe what functionality is covered by the charge. Limit: 255 characters.<br><br><strong>Required</strong></td></tr><tr><td>idempotencyKey</td><td>string</td><td>Generate a unique UUID key to guarantee there is no double charge.<br><br><strong>Required</strong></td></tr><tr><td>metadata</td><td>json</td><td>A JSON object for reference. For example, pass an ID of a bought product.</td></tr></tbody></table>

### Response JSON

A JSON object with the following fields:

| Name                | Type    | Description                                                                                                                                                                                                 |
| ------------------- | ------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| transactionId       | string  | Internal ID of the transaction. Use it to identify a specific charge in case of any issues.                                                                                                                 |
| idempotencyKeyInUse | boolean | <p>Defines if this was a duplicate request and Ecwid didn't execute it (<code>true</code>).<br><br>If <code>false</code>, the billing system accepted UUID and successfully completed the transaction. </p> |


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.ecwid.com/api-reference/rest-api/application/custom-charge-with-ecwid-billing.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.