cohere-install-auth

# Cohere Install & Auth ## Overview Set up the Cohere SDK (v2) and configure authentication for Chat, Embed, Rerank, and Classify endpoints. ## Prerequisites - Node.js 18+ or Python 3.10+ - Package manager (npm, pnpm, or pip) - Cohere account at [dashboard.cohere.com](https://dashboard.cohere.com) - API key from Cohere dashboard (trial keys are free, production keys require billing) ## Instructions ### Step 1: Install SDK ```bash # Node.js / TypeScript npm install cohere-ai # Python pip install cohere ``` ### Step 2: Configure API Key ```bash # Set environment variable export CO_API_KEY="your-api-key-here" # Or create .env file (add .env to .gitignore!) echo 'CO_API_KEY=your-api-key-here' >> .env ``` **Key types:** - **Trial key** — free, rate-limited (5-20 calls/min per endpoint, 1000/month others) - **Production key** — metered billing, 1000 calls/min all endpoints, unlimited monthly ### Step 3: Verify Connection (TypeScript) ```typescript import { CohereClientV2 } from 'cohere-ai'; const cohere = new CohereClientV2({ token: process.env.CO_API_KEY, }); async function verify() { const response = await cohere.chat({ model: 'command-a-03-2025', messages: [ { role: 'user', content: 'Say "connection verified" and nothing else.' }, ], }); console.log('Status:', response.message?.content?.[0]?.text); } verify().catch(console.error); ``` ### Step 4: Verify Connection (Python) ```python import cohere import os co = cohere.ClientV2(api_key=...