# Authentication

Trio uses [basic authentication](https://en.wikipedia.org/wiki/Basic_access_authentication) to authenticate the API. You can create `sandbox` and `production` client secret keys in the developer console. We're also offering a company unique identifier to be used as username in the authentication process.

Use your company unique identifier (client\_id) as username and generated secret key (client\_secret) as password to authenticate:

```sh
curl https://api.sandbox.trio.com.br/banking/entities \ 
  -H "Content-Type: application/json" \ 
  -u {client_id}:{client_secret}
```