retellai-local-dev-loop

Retell AI Local Dev Loop

Overview

Implementation patterns for Retell AI local dev loop — voice agent and telephony platform.

Prerequisites

• Completed retellai-install-auth setup

Instructions

Step 1: SDK Pattern

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 local dev loop

## 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

### Iterate on a prompt with a deterministic local test set

Keep a small suite of synthetic caller intents, including a successful request,
an unclear request, and a required human handoff. Run that suite against a
development agent after each prompt or tool-schema change and compare only
redacted outcomes such as route, tool arguments, and completion state. Do not
point local development at a production phone number; publish a versioned
preview only after the suite continues to meet its expected behavior.

## 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.