> ## Documentation Index
> Fetch the complete documentation index at: https://docs.listenlabs.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication

## API key

1. Go to your account page on Listen and open the **Developer** section. API keys can be created by Admins and Supervisors.
2. Create an API key.
3. Use it in your request in the `x-api-key` header.

```
'x-api-key': 'abc123....'
```

Each API key is scoped to a single organization. It works with all [versioned API endpoints](/api-v2/overview) (`/api/public/v1/...`) — studies, questions, wallets, and responses — as well as the legacy unversioned data endpoints (`/responses`, `/list_surveys`, questions).