> For the complete documentation index, see [llms.txt](https://docs.cardspro.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cardspro.com/api/cards/card-freeze-unfreeze-api.md).

# Card Freeze/Unfreeze API

Temporarily freezes a card. The card can be unfrozen later.

#### Freeze Card <a href="#freeze-card" id="freeze-card"></a>

**Endpoint:** `POST /{san}/freeze`

**Path Parameters:**

* `san` - Secure Account Number (card identifier)

**Content-Type:** `application/json`

**Response:**

```json
{
  "success": true,
  "message": "Card frozen successfully"
}
```

***

#### Unfreeze Card <a href="#unfreeze-card" id="unfreeze-card"></a>

Unfreezes a previously frozen card.

**Endpoint:** `POST /{san}/unfreeze`

**Path Parameters:**

* `san` - Secure Account Number (card identifier)

**Content-Type:** `application/json`

**Response:**

```json
{
  "success": true,
  "message": "Card activated successfully"
}
```

***

**Response Parameters:**

<table><thead><tr><th width="151.22216796875">Field</th><th width="189.111083984375">Type</th><th>Description</th></tr></thead><tbody><tr><td><code>success</code></td><td>Boolean</td><td>Indicates if the operation was successful</td></tr><tr><td><code>message</code></td><td>String</td><td>Descriptive message about the operation result</td></tr></tbody></table>