> For the complete documentation index, see [llms.txt](https://glu.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://glu.gitbook.io/docs/use-cases.md).

# Use cases

- [Accept gift card or membership credit as payment](https://glu.gitbook.io/docs/use-cases/accept-gift-card-or-membership-credit-as-payment.md): Allowing your customers to use their gift cards or membership credits on a website or in person can be done simply and require as few as two API requests.
- [Add an activity to a contact](https://glu.gitbook.io/docs/use-cases/add-an-activity-to-a-contact.md)
- [Add a room reservation](https://glu.gitbook.io/docs/use-cases/add-an-activity-to-a-contact/add-a-room-reservation.md)
- [Add a table reservation](https://glu.gitbook.io/docs/use-cases/add-an-activity-to-a-contact/add-a-table-reservation.md)
- [Add a golf reservation](https://glu.gitbook.io/docs/use-cases/add-an-activity-to-a-contact/add-a-golf-reservation.md)
- [Implement single sign in](https://glu.gitbook.io/docs/use-cases/implement-single-sign-in.md)
- [Issue a gift card](https://glu.gitbook.io/docs/use-cases/issue-a-gift-card.md)
- [Using a product as a template for the gift card](https://glu.gitbook.io/docs/use-cases/issue-a-gift-card/using-a-product-as-a-template-for-the-gift-card.md)
- [Provide the full gift card in each request](https://glu.gitbook.io/docs/use-cases/issue-a-gift-card/provide-the-full-gift-card-in-each-request.md)
- [Register a member](https://glu.gitbook.io/docs/use-cases/register-a-member.md)
- [Add a membership to a contact](https://glu.gitbook.io/docs/use-cases/add-a-membership-to-a-contact.md)
- [Display and sell on your website](https://glu.gitbook.io/docs/use-cases/display-and-sell-on-your-website.md)
- [Headless implementation](https://glu.gitbook.io/docs/use-cases/display-and-sell-on-your-website/headless-implementation.md)