> ## Documentation Index
> Fetch the complete documentation index at: https://docs.creptapay.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Create Payment

Initialize a new checkout payment transaction. This endpoint generates a unique blockchain wallet address for the transaction.

## Request authentication

This endpoint requires a **Public Key** (`pk_...`) passed in either the `x-api-key` header or as a Bearer token in the `Authorization` header.

## Request parameters

<ResponseField name="customer" type="object" required>
  The customer profile payload.

  <Expandable title="properties">
    <ResponseField name="first_name" type="string" required>
      The first name of the customer.
    </ResponseField>

    <ResponseField name="last_name" type="string" required>
      The last name of the customer.
    </ResponseField>

    <ResponseField name="email" type="string" required>
      The email address of the customer.
    </ResponseField>

    <ResponseField name="phone" type="string">
      The phone number of the customer.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="items" type="array" required>
  The list of purchase items.

  <Expandable title="properties">
    <ResponseField name="name" type="string" required>
      The name of the item.
    </ResponseField>

    <ResponseField name="amount" type="number" required>
      The unit price of the item.
    </ResponseField>

    <ResponseField name="quantity" type="integer" required>
      The quantity of the item purchased.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="description" type="string">
  A description of the payment transaction.
</ResponseField>

<ResponseField name="expires_at" type="string">
  ISO 8601 date-time string when the payment link expires. Defaults to 30 minutes from creation.
</ResponseField>