set -euo pipefail
# Node.js
npm install axios dotenv

# Python
pip install requests python-dotenv

# Create .env file (never commit this)
echo 'APOLLO_API_KEY=your-api-key-here' >> .env
echo '.env' >> .gitignore

// src/apollo/client.ts
import axios, { AxiosInstance } from 'axios';
import dotenv from 'dotenv';

dotenv.config();

const BASE_URL = 'https://api.apollo.io/api/v1';

export function createApolloClient(apiKey?: string): AxiosInstance {
  const key = apiKey ?? process.env.APOLLO_API_KEY;
  if (!key) throw new Error('APOLLO_API_KEY is not set');

  return axios.create({
    baseURL: BASE_URL,
    headers: {
      'Content-Type': 'application/json',
      'Cache-Control': 'no-cache',
      'x-api-key': key,
    },
    timeout: 30_000,
  });
}

export const apolloClient = createApolloClient();

// src/scripts/verify-auth.ts
import { apolloClient } from '../apollo/client';

async function verifyConnection() {
  try {
    // Use the health endpoint to test connectivity
    const response = await apolloClient.get('/auth/health');
    console.log('Apollo connection:', response.data.is_logged_in ? 'OK' : 'Invalid key');
  } catch (error: any) {
    if (error.response?.status === 401) {
      console.error('Invalid API key. Generate a new one at:');
      console.error('  Apollo Dashboard > Settings > Integrations > API Keys');
    } else {
      console.error('Connection failed:', error.message);
    }
  }
}

verifyConnection();

# apollo_client.py
import os
import requests
from dotenv import load_dotenv

load_dotenv()

class ApolloClient:
    BASE_URL = 'https://api.apollo.io/api/v1'

    def __init__(self, api_key: str | None = None):
        self.api_key = api_key or os.environ.get('APOLLO_API_KEY')
        if not self.api_key:
            raise ValueError('APOLLO_API_KEY is not set')
        self.session = requests.Session()
        self.session.headers.update({
            'Content-Type': 'application/json',
            'Cache-Control': 'no-cache',
            'x-api-key': self.api_key,
        })

    def get(self, endpoint: str, **kwargs) -> requests.Response:
        return self.session.get(f'{self.BASE_URL}/{endpoint}', **kwargs)

    def post(self, endpoint: str, json: dict = None, **kwargs) -> requests.Response:
        return self.session.post(f'{self.BASE_URL}/{endpoint}', json=json, **kwargs)

    def verify(self) -> bool:
        resp = self.get('auth/health')
        return resp.json().get('is_logged_in', False)

client = ApolloClient()
print('Connected:', client.verify())

# Test your API key from the command line
curl -s -X GET \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "x-api-key: $APOLLO_API_KEY" \
  "https://api.apollo.io/api/v1/auth/health" | python3 -m json.tool