Create subscriptions and use hosted pages for checkout in Chargebee

Steps

1. Authenticate using HTTP Basic auth with your Chargebee API key as the username and an empty password; find or create API keys in Chargebee Settings > Configure Chargebee > API Keys.
2. Base URL is https://{site}.chargebee.com/api/v2 — replace {site} with your Chargebee site name (distinct for test and production sites).
3. Create a subscription via POST to /api/v2/subscriptions with form-encoded body containing 'plan_id' (or 'subscription[plan_id]' depending on API version), 'customer[email]', 'customer[first_name]', and billing address fields.
4. For PCI-compliant checkout without handling card data, create a hosted page by POSTing to /api/v2/hosted_pages/checkout_new_for_items (v2 Items model) or /api/v2/hosted_pages/checkout_new (v1 Plans model) with subscription parameters; redirect the customer to the returned 'url'.
5. After the customer completes checkout, Chargebee redirects to your 'redirect_url' with a hosted page ID; retrieve the result by GETting /api/v2/hosted_pages/{hosted_page_id} to get subscription and customer details.
6. Configure webhooks in Chargebee Settings > API & Apps > Webhooks to receive events like 'subscription_created', 'invoice_generated', and 'payment_failed' for your subscription lifecycle management.