Add selected provider stack setup

api/config.js

@@ -0,0 +1,23 @@
+export default async function handler(req, res) {
+  res.setHeader("Cache-Control", "no-store");
+  if (req.method !== "GET") {
+    res.setHeader("Allow", "GET");
+    return res.status(405).json({ ok: false, error: "Method not allowed" });
+  }
+
+  return res.status(200).json({
+    ok: true,
+    providers: {
+      auth: process.env.AUTH_PROVIDER || "Clerk",
+      database: process.env.DATABASE_PROVIDER || "Neon",
+      kyc: process.env.KYC_PROVIDER || "Veriff",
+      payments: process.env.PAYMENTS_PROVIDER || "Circle",
+      wallet: process.env.WALLET_PROVIDER || "Circle",
+      monitoring: process.env.MONITORING_PROVIDER || "Sentry",
+    },
+    public: {
+      clerk_publishable_key: process.env.CLERK_PUBLISHABLE_KEY || "",
+      sentry_dsn: process.env.SENTRY_DSN || process.env.MONITORING_DSN || "",
+    },
+  });
+}