Skill

retellai-install-auth

Installs Retell AI SDK and authenticates via API key for Node.js or Python voice agent projects. Verifies setup by listing configured agents.

Node

Python

npx claudepluginhub jeremylongshore/claude-code-plugins-plus-skills --plugin retellai-pack

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Install the Retell AI SDK and configure API key authentication for building voice agents.

SKILL.md

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Parent Repo Stars1854

Parent Repo Forks248

Last CommitMar 22, 2026

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Retell AI Install Auth

Overview

Install the Retell AI SDK and configure API key authentication for building voice agents.

Prerequisites

Retell AI account at retellai.com
API key from the Retell AI dashboard
Node.js 18+ or Python 3.9+

Instructions

Step 1: Install SDK

set -euo pipefail
# Node.js
npm install retell-sdk

# Python
pip install retell-sdk

Step 2: Configure Environment

# .env
RETELL_API_KEY=key_xxxxxxxxxxxxxxxxxxxxxxxx

Step 3: Initialize Client (Node.js)

import Retell from 'retell-sdk';

const retell = new Retell({ apiKey: process.env.RETELL_API_KEY! });

// Verify connection — list agents
const agents = await retell.agent.list();
console.log(`Connected! ${agents.length} agent(s) configured.`);

Step 4: Initialize Client (Python)

from retell import Retell
import os

retell = Retell(api_key=os.environ["RETELL_API_KEY"])
agents = retell.agent.list()
print(f"Connected! {len(agents)} agent(s) configured.")

Output

retell-sdk installed
API key configured
Connection verified with agent listing

Error Handling

Error	Cause	Solution
`401 Unauthorized`	Invalid API key	Verify key in Retell Dashboard
`ModuleNotFoundError`	SDK not installed	`npm install retell-sdk`
Connection timeout	Network issue	Check firewall allows HTTPS

Resources

Next Steps

Create your first agent: retellai-hello-world