# Retellai Reliability Patterns

> Retell AI reliability patterns — AI voice agent and phone call automation. Use when working with Retell AI for voice agents, phone calls, or telephony. Trigger with phrases like "retell reliability patterns", "retellai-reliability-patterns", "voice agent".

- Skill: `gabrielmoreira/retellai-reliability-patterns` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add gabrielmoreira/retellai-reliability-patterns`
- Raw SKILL.md: https://api.skillmd.com/api/skills/gabrielmoreira/retellai-reliability-patterns/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- License: MIT
- Author: gabrielmoreira (https://skillmd.com/u/gabrielmoreira)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/gabrielmoreira/retellai-reliability-patterns

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# Retell AI Reliability Patterns

## Overview

Implementation patterns for Retell AI reliability patterns — voice agent and telephony platform.

## Prerequisites

- Completed `retellai-install-auth` setup

## Instructions

### Step 1: SDK Pattern

```typescript
import Retell from 'retell-sdk';
const retell = new Retell({ apiKey: process.env.RETELL_API_KEY! });

const agents = await retell.agent.list();
console.log(`Agents: ${agents.length}`);
```

## Output

- Retell AI integration for reliability patterns

## Error Handling

| Error | Cause | Solution |
|-------|-------|----------|
| 401 Unauthorized | Invalid API key | Check RETELL_API_KEY |
| 429 Rate Limited | Too many requests | Implement backoff |
| 400 Bad Request | Invalid parameters | Check API documentation |

## Examples

### Design a safe fallback for a dependent CRM outage

Give the voice flow a short, explicit timeout for CRM lookup and a fallback
response that either schedules a follow-up or transfers to a human queue. Test
the fallback by making the preview CRM endpoint return a controlled error, then
confirm no call is retried or double-booked. Track the fallback rate separately
from general call failures and remove the temporary routing change only after
the dependency and a synthetic recovery call both succeed.

## Resources

- [Retell AI Documentation](https://docs.retellai.com)
- [retell-sdk npm](https://www.npmjs.com/package/retell-sdk)

## Next Steps

See related Retell AI skills for more workflows.