TrueSift SDKs

TrueSift provides two official framework SDKs with the same verification protocol and widget appearance. Choose the package matching your framework. Framework-specific integration code is not interchangeable.

React / Next.js App Router

Package: @truesift/next (version 0.4.0)
Framework: React and Next.js App Router
Documentation: React / Next.js SDK
npm: @truesift/next

bash

pnpm add @truesift/next

Svelte 5 / SvelteKit

Package: @truesift/svelte (version 0.2.0)
Framework: Svelte 5 and SvelteKit
Documentation: Svelte / SvelteKit SDK
npm: @truesift/svelte

bash

pnpm add @truesift/svelte

The Svelte SDK also supports size="half" for banners up to 500 px wide. This option is not present in the current Next.js SDK.

Shared security model

Both SDKs provide TrueSiftCheck, use local challenge/verify routes, and require server-side verification of a short-lived, single-use verificationToken in the protected business route. A client-side allow result alone never authorizes an action.

The interactive preview renders the shared widget design using the React / Next.js implementation; the Svelte SDK follows the same design and TrueSift verification protocol.