# Sandbox.Http.IsHeaderAllowed

```csharp
static bool IsHeaderAllowed(string header)
```

Checks if a given header is allowed to be set.

### Parameters

- `header` (`string`): The header name to check.

### Returns

`bool`: True if the header is allowed to be set.

Declared in [Sandbox.Http](/api/Sandbox.Http).
Assembly: `Sandbox.Engine`.