Returns the message templates that were approved by Meta for the WhatsApp Business Accounts (WABA)
connected to your project. Templates are the only way to open a conversation with a contact, or to write
to a contact again once the 24 hour customer service window has expired.

Only text-only templates are returned: templates carrying buttons or a media header (image, video,
document) cannot be sent through the API and are filtered out.

Each template exposes the variables it expects in required_variables. Every one of them must be filled
in the parameters object when you send the template, otherwise the request is rejected with
whatsapp_template_missing_parameters.

Templates are created and approved in the Meta Business Manager, not through this API. Newly approved
templates appear here within a few minutes.

Example response

{
  "templates": [
    {
      "whatsapp_template_id": 42,
      "name": "order_shipped",
      "language": "en_US",
      "category": "utility",
      "whatsapp_business_account_id": "123456789012345",
      "required_variables": ["name", "order_id"],
      "preview": "Hi {{name}}, your order {{order_id}} has been shipped!"
    }
  ],
  "page": 0,
  "per_page": 20
}