> For the complete documentation index, see [llms.txt](https://knowledgebase.flaik.com/flaik-knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledgebase.flaik.com/flaik-knowledge-base/for-it-specialists/pos-integration-how-flaik-connects-to-your-pos/pos-integration-api-overview.md).

# POS Integration API — Overview

The **flaik POS Integration API** (formerly known as the **Resort Service API**) is a small Windows service hosted at the resort that bridges your local point-of-sale database to the flaik cloud. It is the integration pathway for POS systems whose data lives on-site:

* **RTP|One**
* **Siriusware**

(InTouch previously used this service; InTouch connections are being migrated to flaik's direct API integration.)

### How it works

* The service is installed on a resort server from an MSI provided by flaik, and runs as the Windows service `FlaikResortService` (display name "Flaik POS Integration API") under the low-privilege `NT AUTHORITY\Local Service` account, startup type Automatic (Delayed Start).
* It connects to your POS database directly (SQL) and exposes a single HTTP endpoint — port **8001** by default — that flaik's cloud calls to sync sales, guests, and scheduling data.
* It is fully self-contained: no .NET runtime or other framework needs to be installed or patched on the host.
* Sensitive configuration (API key, connection strings) is encrypted on service startup. The API key is generated by the service itself on first start and registered with flaik automatically via a handshake — it is never typed in or transmitted in the clear.
* If the service crashes it restarts itself automatically (twice, 60 seconds apart); a persistent fault stops the service so it can be investigated rather than looping.

### What resort IT is responsible for

<table><thead><tr><th width="333.4998779296875">Task</th><th width="318.1666259765625">Reference</th></tr></thead><tbody><tr><td>Install the service and expose port 8001 (or your chosen port) to flaik</td><td><a href="/flaik-knowledge-base/for-it-specialists/pos-integration-how-flaik-connects-to-your-pos/pos-integration-api-overview/how-to-install-the-flaik-resort-api-and-expose-it-to-an-external-url.md">HOW TO: Install the flaik Resort API and Expose It to an External URL</a></td></tr><tr><td>Upgrade when flaik releases a new version</td><td><a href="/flaik-knowledge-base/for-it-specialists/pos-integration-how-flaik-connects-to-your-pos/pos-integration-api-overview/how-to-upgrade-the-flaik-resort-api-to-2.6.0.md">HOW TO: Upgrade the flaik Resort API to 2.6.0</a></td></tr><tr><td>Run the bundled SQL scripts on the flaik/POS databases at install and upgrade</td><td>Installation / Upgrade guides</td></tr><tr><td>Keep the SQL connectivity and firewall rules in place</td><td>Installation guide</td></tr></tbody></table>

flaik monitors the connection from the cloud side and will contact you if the service stops reporting.

flaik team members are available for support for any aspect - from walking through an install/upgrade with you through to partnering to fully install and maintain the service.

### Versions

* The current version is **2.6.0**.&#x20;
* See Release Notes for what's new in each release, and the Upgrade guide for moving from 2.5.11 or earlier.
* 2.6.0 changes the installer and install path, so that upgrade has a short reconfiguration step.


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