> ## Documentation Index > Fetch the complete documentation index at: https://docs.nudj.cx/llms.txt > Use this file to discover all available pages before exploring further. # Widget deep linking > Direct-open URLs that route inside the widget iframe Deep links let a host site open the widget to a specific screen — a reward, a challenge, or a wallet tab — in one step. This is useful for promotional emails, product-page links, or campaign CTAs that want to drop members straight into the relevant widget surface. ## How it works A deep link is a normal URL that encodes the target route inside the widget's slug-based routing. When the widget opens, the embed loader routes directly to that target rather than the default landing view. ## What you can link to * A specific reward card or reward detail. * A specific challenge (opens the challenge detail inside the widget). * The wallet view. * A specific challenge action inside the wizard. ## From the host site The host site is responsible for constructing deep links with the right parameters. The widget itself then honours the incoming route when it boots. ## Fallback If a deep link references something that no longer exists (deleted reward, ended challenge), the widget falls back to the default landing view — it doesn't error. ## Related The bigger picture. Another direct-access pattern.