# boolean_smtp_debug_sensitive_key

> Filters whether a data key is treated as sensitive for debug-log redaction.

Filter · Tier C · Since 1.0.0



## Signature

```php
add_filter( 'boolean_smtp_debug_sensitive_key', $callback, 10, 3 );
```

## Parameters

| Name | Type | Description |
| --- | --- | --- |
| `$sensitive` | `bool` | Whether the built-in fragment match considered this key sensitive. Default false when no fragment matched. |
| `$key` | `string` | The key as given by the caller. |
| `$lowercase` | `string` | The lowercased key. |

**Returns** `bool` — Whether the key is sensitive.

## Fires in

- [app/Support/Debug/WordPressDebugLogger.php:580](https://github.com/booleanpress/boolean-smtp-src/blob/main/app/Support/Debug/WordPressDebugLogger.php#L580) — `BooleanSmtp\Support\Debug\WordPressDebugLogger::isSensitiveKey()`

## Example

```php
add_filter( 'boolean_smtp_debug_sensitive_key', function ( bool $sensitive, string $key, string $lowercase ) {
    return $sensitive;
}, 10, 3 );
```