retellai-install-auth

# 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 ```bash set -euo pipefail # Node.js npm install retell-sdk # Python pip install retell-sdk ``` ### Step 2: Configure Environment ```bash # .env RETELL_API_KEY=key_xxxxxxxxxxxxxxxxxxxxxxxx ``` ### Step 3: Initialize Client (Node.js) ```typescript 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) ```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 - [Retell AI SDKs](https://docs.retellai.com/get-started/sdk) - [retell-sdk...