---
url: /api/specs/openspec/types/openspec2/type-os-2-header-parameter.md
description: api documentation of OS2HeaderParameter from @tsed/openspec
---

## Usage

```typescript
import { OS2HeaderParameter } from "@tsed/specs/openspec/src/openspec2/OS2Parameter";
```

> See [/packages/specs/openspec/src/openspec2/OS2Parameter.ts](https://github.com/tsedio/tsed/blob/v8.37.1/packages/specs/openspec/src/openspec2/OS2Parameter.ts#L0-L0).

## Overview

```ts
type OS2HeaderParameter = OS2BaseFormatContrainedParameter & OS2BaseSchema & {
    in: "header";
};
```

## in

```ts
in: "header";
```