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

# API Key

## MCP Servers that require API Key Authentication

The following MCP servers use API key authentication and do not support OAuth:

* **Cloudflare** - Requires Cloudflare API token
* **Discord** - Requires Discord bot token
* **ElevenLabs** - Requires ElevenLabs API key
* **PostHog** - Requires PostHog API key
* **SendGrid** - Requires SendGrid API key