# Node.js / TypeScript
npm install cohere-ai

# Python
pip install cohere

# 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

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);

import cohere
import os

co = cohere.ClientV2(api_key=os.environ.get("CO_API_KEY"))

response = co.chat(
    model="command-a-03-2025",
    messages=[
        {"role": "user", "content": "Say 'connection verified' and nothing else."}
    ],
)
print("Status:", response.message.content[0].text)

// Auto-reads CO_API_KEY from environment
const cohere = new CohereClientV2();