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

# Retell AI

> Key setup, verification, and rotation for the Retell integration.

## Overview

Retell is Vapify's alternative voice AI provider, with a streamlined single-key setup. A good fit if your assistants are already built in Retell.

## Key requirements

| Key         | Required | Purpose                                                            |
| ----------- | -------- | ------------------------------------------------------------------ |
| **API Key** | Yes      | Authenticates Vapify with your Retell account and syncs assistants |

## Where to generate keys

Log into your Retell dashboard, navigate to **Settings → API Keys**, and copy your API key.

## Entering keys in Vapify

Select **Retell**, paste your API key, and click **Verify and Continue** (during onboarding) or **Save Settings** (in a sub account's General tab). See [Connect Your AI Provider](/getting-started/connect-your-ai-provider) for the full walkthrough.

## Verification

Vapify tests the key before accepting it. If verification fails, re-copy the key from Retell. Trailing spaces are the most common cause.

## Rotation

<Warning>
  Once a sub account's Billing Start Date is set (gone live), its Retell API key cannot be edited. Plan your key setup carefully before going live.
</Warning>

Before go-live, you can update the key any time from the sub account's **General** tab.

## Related Articles

* [Connect Your AI Provider](/getting-started/connect-your-ai-provider): first-time connection steps
* [AI Assistants](/running-your-agency/ai-assistants): syncing and assigning assistants after connecting
* [Vapi](/integrations/vapi): the alternative provider