---
title: "Setting Up the App SDK"
slug: "s3suite94-web-setting-up-the-app-sdk"
updated: 2026-10-27T18:41:54Z
published: 2026-10-27T18:41:54Z
canonical: "docs.onespan.com/s3suite94-web-setting-up-the-app-sdk"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onespan.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Setting Up the App SDK

For the APIs to work correctly, load utils.js before loading other SDK scripts.

To load the App SDK, use a script tag.

```xml
<head>
  . . .
  <script src="https://<nnl_apiserver_domain>:<port>/nnlappsdk‑<version>/js/utils.js">
  </script>
  <script src="https://<nnl_apiserver_domain>:<port>/nnlappsdk‑<version>/js/appsdk.js">
  </script>
  <script src="https://<nnl_apiserver_domain>:<port>/nnlappsdk‑<version>/js/adaptive.js">
  </script>
  . . .
</head>
```

adaptive.js contains the APIs for Adaptive Registration, Adaptive Authentication, and non-FIDO registration. appsdk.js contains the APIs for non-Adaptive Authentication and FIDO registration.