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

# Authentication

## Authentication

To use the NoParam API, you need an **API key**.\
Pass the API key in the `Authorization` header:

#### 🔑 Example Request

```http
POST /verify HTTP/1.1
Host: noparam.com/api/v1
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json
```