# Cheers Integration Docs > Cheers integration APIs for point-of-sale and external systems. Each file below is a > self-contained LLM reference for one integration: concepts, auth, full endpoint contracts, > request/response schemas, curl examples, and error codes. ## Integrations - [Cheers Loyalty (POS API)](https://integration.cheersapp.io/llms/cheers-loyalty.md): Credit-based payments with automatic venue discounts. Flow: preview → update → finalize, plus cancel and refund. - [Counter Order API](https://integration.cheersapp.io/llms/counter-order.md): Callback-driven order intake for POS and kitchen systems. Order lifecycle, external payment handling, desk availability. - [Hybrid RevoUnion API](https://integration.cheersapp.io/llms/hybrid-revo-token.md): Digital container-deposit management. Flow: configuration → issue → preview → validate return. - [POS Software Sync](https://integration.cheersapp.io/llms/pos-software-sync.md): Reversed direction — the POS software provides the API and Cheers polls it. Product list (required) and closed transactions (optional): required content, accepted response shapes, sync rules. ## Shared - [Device Details](https://integration.cheersapp.io/llms/device-details.md): `GET /v1/integrations/me` — device identity, authorities, organization, place, and desks. Used by all three integrations for startup key validation, feature gating, and receipt headers. ## Optional - [Human-readable docs](https://integration.cheersapp.io/docs/intro): The full Docusaurus site with diagrams and interactive API reference.