# API Documentation

## Glu API

- [Introduction](https://glu.gitbook.io/docs/getting-started/introduction.md)
- [Authentication](https://glu.gitbook.io/docs/getting-started/authentication.md)
- [API Key](https://glu.gitbook.io/docs/getting-started/authentication/api-key.md): Learn how to authenticate with our Organisation API
- [OAuth](https://glu.gitbook.io/docs/getting-started/authentication/oauth.md): Learn how to authenticate to use the Store API
- [Errors](https://glu.gitbook.io/docs/getting-started/errors.md)
- [Contacts](https://glu.gitbook.io/docs/concepts/contacts.md): Learn what a contact represents and how best to handle them/
- [Custom fields](https://glu.gitbook.io/docs/concepts/contacts/custom-fields.md)
- [Memberships & Loyalty](https://glu.gitbook.io/docs/concepts/memberships-and-loyalty.md): Learn how to craft a membership program
- [Products](https://glu.gitbook.io/docs/concepts/products.md)
- [Gift cards](https://glu.gitbook.io/docs/concepts/products/gift-cards.md)
- [Physical goods](https://glu.gitbook.io/docs/concepts/products/physical-goods.md)
- [Memberships](https://glu.gitbook.io/docs/concepts/products/memberships.md)
- [Creating orders](https://glu.gitbook.io/docs/concepts/products/creating-orders.md)
- [Multi-currency](https://glu.gitbook.io/docs/concepts/products/multi-currency.md): Understand how to handle selling across multiple currencies.
- [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)
- [Organisation API](https://glu.gitbook.io/docs/api-reference/organisation-api.md)
- [Activity](https://glu.gitbook.io/docs/api-reference/organisation-api/activity.md)
- [Balance](https://glu.gitbook.io/docs/api-reference/organisation-api/balance.md)
- [Booking](https://glu.gitbook.io/docs/api-reference/organisation-api/booking.md)
- [Contact](https://glu.gitbook.io/docs/api-reference/organisation-api/contact.md)
- [Gift Card](https://glu.gitbook.io/docs/api-reference/organisation-api/gift-card.md)
- [Golf Reservation](https://glu.gitbook.io/docs/api-reference/organisation-api/golf-reservation.md)
- [Member](https://glu.gitbook.io/docs/api-reference/organisation-api/member.md)
- [Order](https://glu.gitbook.io/docs/api-reference/organisation-api/order.md)
- [Organisation](https://glu.gitbook.io/docs/api-reference/organisation-api/organisation.md)
- [Partner Offer](https://glu.gitbook.io/docs/api-reference/organisation-api/partner-offer.md)
- [Product](https://glu.gitbook.io/docs/api-reference/organisation-api/product.md)
- [Referral Invites](https://glu.gitbook.io/docs/api-reference/organisation-api/referral-invites.md)
- [Referral Programs](https://glu.gitbook.io/docs/api-reference/organisation-api/referral-programs.md)
- [Store](https://glu.gitbook.io/docs/api-reference/organisation-api/store.md)
- [Stored Credit Accounts](https://glu.gitbook.io/docs/api-reference/organisation-api/stored-credit-accounts.md)
- [Subscription](https://glu.gitbook.io/docs/api-reference/organisation-api/subscription.md)
- [Table Reservation](https://glu.gitbook.io/docs/api-reference/organisation-api/table-reservation.md)
- [Tag](https://glu.gitbook.io/docs/api-reference/organisation-api/tag.md)
- [Transaction](https://glu.gitbook.io/docs/api-reference/organisation-api/transaction.md)
- [Wordpress Integration](https://glu.gitbook.io/docs/api-reference/organisation-api/wordpress-integration.md)
- [Workflow](https://glu.gitbook.io/docs/api-reference/organisation-api/workflow.md)
- [Models](https://glu.gitbook.io/docs/api-reference/organisation-api/models.md)
- [Store API](https://glu.gitbook.io/docs/api-reference/store-api.md)
- [Wallet](https://glu.gitbook.io/docs/api-reference/store-api/wallet.md)
- [Models](https://glu.gitbook.io/docs/api-reference/store-api/models.md)