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

# Retell AI

## Overview

> [card] [Pre-built tooling](#pre-built-tooling)

> [card] [Pre-built integrations](#pre-built-integrations)

> [card] [Access requirements](#access-requirements)

> [card] [Setup guide](#setup-guide)

> [card] [Useful links](#useful-links)

> [card] [API gotchas](#api-gotchas)

## Pre-built tooling

> [accordion] ✅ Authorization
>
> | Tools | Status |
> | - | - |
> | Pre-built authorization (API Key) | ✅ |
> | Pre-built authorization UI | ✅ |
> | Custom authorization UI | ✅ |
> | End-user authorization guide | ✅ |
> | Expired credentials detection | ✅ |

> [accordion] ✅ Read & write data
>
> | Tools | Status |
> | - | - |
> | Pre-built integrations | 🚫 (time to contribute: \<48h) |
> | API unification | ✅ |
> | 2-way sync | ✅ |
> | Webhooks from Nango on data modifications | ✅ |
> | Real-time webhooks from 3rd-party API | 🚫 (time to contribute: \<48h) |
> | Proxy requests | ✅ |

> [accordion] ✅ Observability & data quality
>
> | Tools | Status |
> | - | - |
> | HTTP request logging | ✅ |
> | End-to-end type safety | ✅ |
> | Data runtime validation | ✅ |
> | OpenTelemetry export | ✅ |
> | Slack alerts on errors | ✅ |
> | Integration status API | ✅ |

> [accordion] ✅ Customization
>
> | Tools | Status |
> | - | - |
> | Create or customize use-cases | ✅ |
> | Pre-configured pagination | 🚫 (time to contribute: \<48h) |
> | Pre-configured rate-limit handling | 🚫 (time to contribute: \<48h) |
> | Per-customer configurations | ✅ |

*No pre-built syncs or tools available yet.*

> [!TIP]
>
> Not seeing the integration you need? [Build your own](https://nango.dev/docs/guides/functions/functions-guide.md) independently.

## Access requirements

| Pre-Requisites | Status | Comment |
| - | - | - |
| Paid dev account | ✅ | Required for API access |
| Paid test account | ✅ | Available for testing purposes |
| Partnership | ❌ | Not required |
| App review | ❌ | Not required |
| Security audit | ❌ | Not required |

## Setup guide

1. **Create an account**: Sign up for a Retell AI account at [Retell AI](https://www.retellai.com/).
2. **Generate an API key**: Navigate to your workspace settings and generate an API key. This key will be used for authentication.
3. **Configure your integration**: Use the API key in your requests by including it in the `Authorization` header as a Bearer token.
4. **Test your integration**: Use the `/v1/agent` endpoint to verify your setup.

> [!TIP]
>
> Need help getting started? Get help in the [community](https://nango.dev/slack).

> [!NOTE]
>
> Contribute improvements to the setup guide by [editing this page](https://github.com/nangohq/nango/tree/master/docs/integrations/all/retell-ai.mdx)

## Useful links

* [Retell AI API Documentation](https://docs.retellai.com/api-references)
* [Authentication Guide](https://docs.retellai.com/accounts/api-keys-overview)
* [API Playground](https://docs.retellai.com/test/llm_playground)

> [!NOTE]
>
> Contribute useful links by [editing this page](https://github.com/nangohq/nango/tree/master/docs/integrations/all/retell-ai.mdx)

## API gotchas

* **API Key Security**: Never expose your API key in client-side code or public repositories. Always use environment variables or secure storage.
* **Rate Limits**: Be mindful of API rate limits. Check the [API documentation](https://docs.retellai.com/deploy/concurrency#understand-concurrency-and-limits) for details.
* **Webhook Security**: Use the designated webhook API key for signing and verifying webhook requests to ensure they are legitimate.

> [!NOTE]
>
> Contribute API gotchas by [editing this page](https://github.com/nangohq/nango/tree/master/docs/integrations/all/retell-ai.mdx)

> [card] [Connect to Retell Ai](https://nango.dev/docs/integrations/all/retell-ai/connect)
>
> Guide to connect to Retell Ai using Nango Connect.


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