CDN Endpoint

The FAST Widget

Drop-in challenge engine for any sportsbook. One script tag. Shadow DOM isolation. Full white-label support. No build step required.

    
    // Minimal embed

    <script

      src="https://widget.fundedfast.eu/fast-widget.iife.js"

      data-api-key="pk_your-widget-key"

      data-user-id="current-user-id"

      data-fast-widget

    ></script>

    // Full customization

    <script

      src="https://widget.fundedfast.eu/fast-widget.iife.js"

      data-api-key="pk_your-widget-key"

      data-user-id="current-user-id"

      data-lang="en"                // en, de, hr

      data-theme="dark"              // dark, light

      data-position="bottom-right"    // bottom-right, bottom-left

      data-brand-color="#c9a227"      // primary brand color

      data-brand-color-end="#f0d78c"  // gradient end

      data-brand-logo="https://..."   // operator logo URL

      data-brand-font="Inter"        // Google Font name

      data-currency="EUR"           // display currency

      data-show-leaderboard="true"   // toggle sections

      data-show-badges="true"

      data-show-history="true"

      data-show-shop="true"

      data-show-confetti="true"

      data-show-lang-picker="true"

      data-fab-size="56"            // FAB button size in px

      data-fast-widget

    ></script>

    // Payment integration (beforePurchase hook)

    <script>

      window.FastWidget.mount({

        apiKey: 'pk_your-widget-key',

        userId: 'player-42',

        beforePurchase: async (tierId, tier) => {

          // Collect payment before FAST creates the challenge

          const payment = await yourAPI.charge(tier.purchasePrice);

          return payment.success; // false = cancel, widget shows error

        },

        onEvent: (event, data) => {

          if (event === 'challenge.purchased') { /* payment done, challenge live */ }

          if (event === 'challenge.purchase_blocked') { /* payment failed */ }

        }

      });

    </script>

Security Model

The widget uses a pk_ public key - safe to embed in frontend code.