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

# Account & billing

## Subscription & quota

* **Subscription plan**: choose a plan that fits your business scale.
* **Quota & usage**: view usage in real time and set threshold alerts.
* **Over-quota policy**: pay-as-you-go or restrict requests.

## Invoices & payments

* **Payment methods**: supports mainstream enterprise payment channels.
* **Invoicing**: fill in invoice details and manage invoice headers.
* **Invoice history**: download and reconcile.

## Teams & roles

* **Member management**: invite / remove members and assign roles.
* **Permission policy**: least privilege, with re-confirmation for sensitive operations.

For enterprise contracts and dedicated onboarding, contact sales or support.


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