PUT https://track.customer.io/api/v1/customers/{customer_id}

Authorization: Basic {base64(site_id:api_key)}

{
  "email": "[email protected]",
  "created_at": 1705312800,
  "first_name": "John",
  "plan": "pro"
}

POST https://track.customer.io/api/v1/customers/{customer_id}/events

Authorization: Basic {base64(site_id:api_key)}

{
  "name": "purchase",
  "data": {
    "product": "Pro Plan",
    "amount": 99
  }
}

POST https://track.customer.io/api/v1/events

Authorization: Basic {base64(site_id:api_key)}

{
  "name": "page_viewed",
  "data": {
    "page": "/pricing"
  },
  "anonymous_id": "anon_123"
}

DELETE https://track.customer.io/api/v1/customers/{customer_id}

Authorization: Basic {base64(site_id:api_key)}

GET https://api.customer.io/v1/customers/{customer_id}/attributes

Authorization: Bearer {app_api_key}

GET https://api.customer.io/v1/campaigns

Authorization: Bearer {app_api_key}

GET https://api.customer.io/v1/campaigns/{campaign_id}/metrics

Authorization: Bearer {app_api_key}

POST https://api.customer.io/v1/campaigns/{campaign_id}/triggers

Authorization: Bearer {app_api_key}

{
  "emails": ["[email protected]"],
  "data": {
    "coupon_code": "SAVE20"
  }
}

POST https://api.customer.io/v1/send/email

Authorization: Bearer {app_api_key}

{
  "transactional_message_id": "1",
  "to": "[email protected]",
  "identifiers": {
    "id": "user_123"
  },
  "message_data": {
    "order_id": "ORD-456"
  }
}

// Initialize
_cio.identify({
  id: 'user_123',
  email: '[email protected]',
  created_at: 1705312800,
  plan: 'pro'
});

// Track event
_cio.track('purchase', {
  product: 'Pro Plan',
  amount: 99
});

// Track page view
_cio.page();