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

# Help Center

> DeerAPI help center reference for API setup, billing, privacy, support, and troubleshooting.

## Overview

The DeerAPI help center covers setup, billing, troubleshooting, privacy, and support workflows for production API usage.

## Core links

* Use the [Quick Start](/quick-start/quick-start) to make your first API call.
* Use [Common Mistakes](/help/common-mistakes) to diagnose base URL, API Key, and model ID issues.
* Use [Error Codes and Troubleshooting](/help/error-codes) to handle failed requests.
* Use the [live pricing page](https://api.deerapi.com/pricing) to choose model IDs and review costs.

## Support

When you contact support, include the affected request ID, endpoint, model ID, and approximate request time. Do not send your API Key or private request content.