> 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/get-started/getting-started.md).

# Getting started

Learn how to choose and use the Glu APIs.

### API overview

The Glu API is a RESTful API for managing gift cards and memberships.

The [Organisation API](/docs/api-reference/organisation-api.md) supports operations across your organisation. Use it for bulk data extraction, reporting, and third-party system synchronisation.

The [Store API](/docs/api-reference/store-api.md) uses OAuth on behalf of a member. Use it to build a headless members area backed by Glu.

Start with an [Organisation API key](/docs/get-started/authentication/api-key.md), or learn about [Store API OAuth](/docs/get-started/authentication/oauth.md).

### Use AI assistants

Connect a compatible AI assistant to the Glu documentation with MCP. The assistant can use the guides and API reference while helping you build an integration.

[Configure an AI assistant with MCP.](/docs/get-started/getting-started/use-ai-assistants.md)

### Common use cases

Use the Organisation API to build these integrations.

<table data-column-title-hidden data-view="cards" data-search="false"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Accept gift cards as payment</strong></td><td>Search for and redeem a gift card in your platform or checkout.</td><td><a href="/docs/use-cases/accept-gift-card-or-membership-credit-as-payment.md">Accept gift card or membership credit as payment</a></td></tr><tr><td><strong>Register a member</strong></td><td>Build an enrolment form that adds members to a membership.</td><td><a href="/docs/use-cases/register-a-member.md">Register a member</a></td></tr><tr><td><strong>Implement single sign-on</strong></td><td>Use OAuth to give customers one sign-in experience across your applications.</td><td><a href="/docs/use-cases/implement-single-sign-in.md">Implement single sign in</a></td></tr></tbody></table>