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

# Introduction

> API

All API endpoints are authenticated using API keys passed in the `X-API-Key` header.

```json theme={null}
"security": [
  {
    "apiKeyAuth": []
  }
]
```

Sample authenticated request:

```bash theme={null}
curl -X GET "https://api.finosu.com/customers" \
     -H "X-API-Key: your_api_key_here"
```