# Overview {% hint style="danger" %} Development Stage Notice Sentinel is currently in an active development and testing phase. API structures may change as new features are added. Caution is advised when deploying to production environments. {% endhint %} Sentinel Attest is a KMP module that cryptographically signs the device integrity report generated by Sentinel and transmits it to the server. It adds a server-side verification layer to Sentinel, which operates solely on the client side. It enables the configuration of Play Integrity for Android and App Attest for iOS. The encrypted payload transmitted to your server includes the token data from your defined configurations. Furthermore, client-side security reports generated by Sentinel are also embedded into the payload. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://sentinel.rexiox.co/attestation/overview.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.