# Integrations

- [Gift Card API](/integrations/gift-card-api.md): REST API for Custom Integrations
- [Authentication](/integrations/gift-card-api/authentication.md)
- [Endpoints and requests](/integrations/gift-card-api/endpoints-and-requests.md)
- [Creates a gift card](/integrations/gift-card-api/endpoints-and-requests/creates-a-gift-card.md)
- [Updates a gift card](/integrations/gift-card-api/endpoints-and-requests/updates-a-gift-card.md)
- [Retrieves a single gift card](/integrations/gift-card-api/endpoints-and-requests/retrieves-a-single-gift-card.md)
- [Searches for gift card](/integrations/gift-card-api/endpoints-and-requests/searches-for-gift-card.md)
- [Shopify Flow](/integrations/shopify-flow.md)
- [Actions](/integrations/shopify-flow/actions.md): Shopify Flow Actions with Gift Card Factory
- [Templates](/integrations/shopify-flow/templates.md)
- [Triggers](/integrations/shopify-flow/triggers.md)
- [Klaviyo](/integrations/klaviyo.md)
- [Connect Klaviyo](/integrations/klaviyo/connect-klaviyo.md)
- [Klaviyo Flows](/integrations/klaviyo/klaviyo-flows.md): Send customized gift card emails with Klaviyo