---

name: retellai-cost-tuning description: "Retell AI cost tuning \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 cost tuning", "retellai-cost-tuning", "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 Cost Tuning

Overview

Implementation patterns for Retell AI cost tuning — 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 cost tuning

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

Reduce cost without degrading a required human handoff

Measure average call duration, transfer rate, and failed-call retries for a representative non-production sample before changing prompt length or model settings. Trial the lower-cost configuration on a small canary, retaining the existing agent version as rollback. Keep the human-handoff trigger unchanged unless the service owner approves a new threshold; a shorter call is not a saving if it silently increases unresolved customer requests.

Resources

• Retell AI Documentation
• retell-sdk npm

Next Steps

See related Retell AI skills for more workflows.