URL: /guides/tanstack-start --- title: TanStack Start description: Add the FormShield beacon and optional server reporting to a TanStack Start app --- Integrate FormShield in TanStack Start in two layers: the beacon in the root document for client pageviews, and optional server-side reporting from a server route or middleware to catch crawlers that never run JavaScript. The beacon alone is enough to start. You need a publishable key (`fs_pub_live_…`) from your project's Settings. ## Add the beacon Inject the script into the root document so it loads once per page. In TanStack Start the root route renders the document shell — add the `