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

# API Reference

> Explore the Desmo Proof-of-Delivery API

## Welcome

The Desmo API allows you to retrieve session metadata and detailed Proof-of-Delivery (PoD) insights from your backend.

## Authentication

All API requests require your **Secret Key** (`sk_...`).

Use the `Desmo-Key` header (preferred) or the `Authorization` header.

```http theme={null}
Desmo-Key: sk_live_...
```

Never use your secret key in client-side code (mobile apps or browsers). For mobile SDKs, use your **Publishable Key** (`pk_...`).