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

# Start here

> Quick start for HTS API authentication and base URL (API reference is the main docs)

This documentation is intentionally **API-reference-first**.

* Go to **API Reference** → endpoints, parameters, and response formats
* Use this page only for the minimum setup details

## Base URL

```text theme={null}
https://htsapi.com/v1/
```

## Authentication

Include your API key as a Bearer token:

```text theme={null}
Authorization: Bearer your_hts_api_key
```

## Next

* Read the [API Reference landing page](/api-reference/introduction)
* Jump to endpoints:
  * [Get HTS Codes](/api-reference/endpoint/get-hts)
  * [Get HS Codes](/api-reference/endpoint/get-hs)