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---
name: retellai-observability
description: "Retell AI observability \u2014 AI voice agent and phone call automation.\n\
Use when working with Retell AI for voice agents, phone calls, or telephony.\nTrigger\
\ with phrases like \"retell observability\", \"retellai-observability\", \"voice\
\ agent\".\n"
allowed-tools: Read, Write, Edit, Bash(npm:*), Bash(curl:*), Grep
version: 1.9.0
license: MIT
author: Jeremy Longshore <jeremy@intentsolutions.io>
tags:
- saas
- retellai
- voice
- telephony
- ai-agents
compatibility: Designed for Claude Code
---
# Retell AI Observability
## Overview
Implementation patterns for Retell AI observability — 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 observability
## 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
### Alert on a regression while protecting call content
Emit structured metrics for call completion, transfer outcome, latency, and
provider errors using agent version and environment as bounded labels. When an
alert fires, link the affected call identifiers to a restricted investigation
record instead of attaching transcripts to the dashboard. Compare a synthetic
call against the last known-good version, then make one reversible routing or
configuration change and watch the same metrics through the defined recovery
window.
## 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.
